halloween slime science experiment

30 of Our Favorite Halloween Science Experiments

From exploding Peeps to dancing Gummy Bears!

Halloween is the perfect occasion to try some spooky, creepy, candy-centered Halloween science experiments! Here, we’ve rounded up 30 hands-on Halloween science experiments that explore concepts such as the scientific method, osmosis, exothermic reactions, and more.

You’ll only need simple supplies for most of these Halloween science experiments, so any teacher or family can head out to learn about chemistry, biology, physics, and more. To make it even easier to find the right outdoor science activities, we’ve rated each of our Halloween science experiments for difficulty:

• Easy: Simple, short activities you can do with little or no prep needed.
• Medium: These activities take a little longer or require a few extra supplies but are still fairly simple.
• Advanced: Activities that require more unusual supplies or complex skills.

30 Frightening Halloween Science Experiments

1. Brew up your own slime

Chances are good your students already love making and playing with slime. Turn the fun into an experiment by changing the ingredients to create slime with a variety of properties—from magnetic to glow-in-the-dark!

We have a variety of slime videos to check out: 

We Put 4 Slime Recipes to the Test! Which One Was Best?

Glitter Slime

Fluffy Slime

Butter Slime

2-Ingredient Slime

(Difficulty: Medium)

Try it: How to Make Slime

2. Experiment with this haunted Halloween hand melt

This fun activity will teach your students about the effect of salt on frozen water. They will make observations as the creepy hands melt and colorful Halloween toys emerge from the slush.

(Difficulty: Easy)

Try it: Haunted Halloween Hand Melt

3. Build a spooky hand

Using paper, straws, yarn and tape, create a moveable hand that replicates the movement of a human hand. Add a spooky touch by making the tips of the fingers pointy.

(Difficulty: Hard)

4. Test sinking & floating

Determine if a pumpkin sinks or floats in water by conducting an experiment. Test other elements of the pumpkin separately such as the stem, seeds and pulp.

Try it: Pumpkin Experiment

5. Brew up some candy potions

Let your little scientists loose as they play Mad Scientist … mixing, dumping, shaking, pouring, and experimenting to create their own magic potions from Halloween candy.

Try it: Candy Potions

6. Monitor a decomposing pumpkin

Decomposition, or rotting, is the process by which organic substances are broken down after death. Eventually, decomposition breaks organic matter down so that it becomes part of the soil again. And what better tool for this lesson than an old Jack-O-Lantern?

Try it: Pumpkin Decomposition Experiment

7. Code robots to create a Jack-O-Lantern

Print different pictures of Jack-o-Lantern faces individually on cards. Code a moveable robot to collect pieces that will complete the Jack-o-Lantern face.

Try it: Jack-O-Lantern Robot

8. Explore the math inside a candy bar

By using the Scientific Process, determine the density, volume, and mass inside different candy bars.

(Difficulty: Advanced)

Try it: Candy Bar Density Lab

9. Launch a flying Bat

Create a paper tube that fits around a straw and close off one of the ends. Draw or print out a bat template and attach to the paper tube. Blow through the straw and watch the bat fly.

Try it: Flying Bat Straw Rockets

10. Create an exploding Ghost Peeps geyser.

Exploding? Say no more! Your students will be enthralled as they watch ghost-shaped Peeps transform when they’re placed in the microwave.

Try it: Exploding Peep Geysers

11. Remove the “M” from M&Ms

Observe how M & M’s have different chemical structures that make the colors dissolve in water, but the letters stay intact.

Try it: Floating M M&M Candy Science Experiment

12. Test candy acidity 

A simple experiment to test whether candy has acid in it. All you need are sour Skittles, water, and baking soda. If the candy has acid, the mixture will bubble and fizz when the baking soda is added.

Try it: Candy pH Science Activity

13. Make your own candy vending machine 

There are a lot of variations of this project on YouTube from Hack Room, but it’s sure to challenge students’ engineering and planning skills.

14. Dance with gummy worms

This simple activity is perfect for little scientists who want to see creatures come to life before their eyes.

Try it: Dancing Frankenworms Kids’ Science Experiment

15. Make an oozing monster

Create a monster face on the outside of a plastic water bottle. Mix together glue, Borax, baking soda, vinegar and food coloring and add to the bottle. Watch how the foaming mixture leaks out of the monster’s head.

Try it: Oozing Monster Heads

16. Inflate pumpkin balloons 

Using a permanent maker, draw a face on an orange balloon. Fill the balloon with baking soda and attach to a water bottle filled with vinegar. Watch the pumpkin grow bigger in size!

17. Instigate a fizzy eruption

This experiment is a crowd-pleasing classic! Your students will love creating geysers from Diet Coke and Mentos as they learn about chemical reactions. Definitely an outdoor activity!

18. Supersize some gummy bears

Little ones will love this Alice in Wonderland style experiment. Using water, salt, and gummy bears, your students will learn about the process of osmosis.

Try it: Growing Gummy Bear Science

19. Play magician with disappearing candies!

What makes these candies dissolve the fastest—and why? Your students will get a taste of the scientific method as they experiment with different liquids and leftover Halloween candy.

Try it: Dissolving Peeps

20. Wanna know what’s really in candy?

Who knew candy had more than just sugar in it? This experiment using Starbursts and heat is eye-opening.

Try it: Candy Oil Test

21. Make a slimy egg

Observe what happens to an egg after it’s been sitting in vinegar for a long amount of time. After losing its shell, the egg will transform into a consistency like an eyeball! Check out this video and experiment we put together here .

22. Build a haunted house

Using recycled materials and a simple circuit, build a haunted house that lights up from the inside.

Try it: Spooky Circuits

23. Make a vanishing ghost

Gather packing peanuts and use a permanent marker to draw ghost faces. Grab a bowl of water and watch the ghost disappear right before your eyes!

Try it: Amazing Vanishing Ghosts

24. Craft a skeleton

Using Q-tips, scissors and glue, craft a model of a skeleton. You can position your skeleton in a fun pose!

Try it: Q-Tip Skeleton Halloween Craft

25. Create a ghost sound

On a white balloon, draw a ghost face with a permanent marker. Insert a small metal hex nut before blowing up the balloon and tying off. When the balloon is swirled around, the hex nut will spin around on the inside creating a spooky sound.

Try it: Spooky Ghost Sounds STEM Activity

26. Build an edible haunted house

Who says a haunted house can’t be tasty? Using candy, graham crackers and frosting, build a haunted house that’s actually delicious! 

Try it: Haunted Halloween Gingerbread House

27. Observe a melting pumpkin

Using orange Skittles, create an outline of a pumpkin in a plate. Slowly pour warm water on top and observe the colors melt into the liquid.

(Difficulty: Easy) 

Try it: Pumpkin Skittles Experiment

28. Use static electricity to fly ghosts

Cut out tissue paper ghosts and draw faces. Rub a balloon on your hair to create static electricity, then float on top of the ghosts to create them to fly.

Try it: Static Electricity Ghosts

29. Light up a pool noodle pumpkin

Carefully cut out a face design in an orange pool noodle. Then, create a play doh circuit that will light up the pumpkin from the inside.

Try it: Halloween Pumpkin Squishy Circuits

30. Make the spider go up the web

Attach a spider ring to a pencil using yarn. Theb, build with LEGO bricks a device that can hold the pencil and have the spider move up the web by rolling the pencil.

Try it: Spider Pulleys STEM Activity

For more Halloween fun like these Halloween science experiments, check out our frightfully fun Halloween activities, crafts and games for the classroom .

Plus, if you loved these halloween science experiments, check out our free halloween writing paper plus 20 spooky writing prompts ., you might also like.

Check Out This Amazing Nickelodeon Slime in Space Virtual Field Trip

EVERY KID wants to watch astronauts play slime ping pong in space! Continue Reading

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Easy Halloween Slime | STEAM Experiment for Kids

by Emily | Oct 9, 2019 | STEAM Experiments , STEAM for Kids | 0 comments

SLIME! Kids love the ooey, gooey, sticky, squishy, mess and moms dislike it for all the same reasons. I’m here to help you start to like slime. Especially when you see your child’s face light up with excitement and joy while making and playing with this slime.

Slime is the perfect science experiment for Halloween. Depending on the colors and add-ins used, it can be creepy, spooky, sparkly, glow-in-the-dark, shiny…you can match it to any Halloween costume or party theme.

My kids love slime, but we’ve never made it ourselves at home before. Since it’s our first dabble into slime making, I’m keeping this recipe classic and simple. I am using as few ingredients as possible, and we’re using ingredients you most likely already have at home.

Let’s talk about the science of slime

Slime is a non-Newtonian fluid, similar to Oobleck , which we learned about last month . This means that it changes viscosity, and flows more freely like a liquid when you let it fall from your fingers, but it can form a tight ball when compressed between your fingers and the palm of your hand.

Slime is made up of a PVA (polyvinyl-acetate) glue and activators. PVA glue is simply your everyday Elmer’s washable school glue. There are several borate ion activators you can choose from: Borax powder * (sodium tetraborate), contact lens or saline solution (contains both sodium borate and boric acid), liquid starch (contains sodium borate), or eye drops (contain boric acid).

The slime is stretchy due to cross-linking polymers. PVA glue contains polymers, which are long chains of molecules. When you add the activator (containing a borate ions), new chemical bonds are formed. It changes the position of the polymers, creating cross-linking which acts as a net to trap the liquid and keep the slime feeling wet, but remains a stretchy due to the long polymers chains.

• Helpful and informative slime resource: The Science Behind Slime by Little Bins for Little Hands.

* There is some controversy on the internet about the use of Borax or any of the borate ion containing activators. I have read both sides (read a case against Borax here and a case for Borax here ), and I personally feel that borate ion activators are safe under supervised use for my children.

My slime recipe does not use Borax. It does, however, use saline solution which contains borate ions (the same active ingredient as Borax). If you don’t want to use borate ions, Little Bins for Little Hands’ website has many borate ion-free slime recipes here .

Easy Halloween Slime

This slime is easy and fun to make and play with. It’s great for kids age 2+, with adult help and supervision. You can make this as crazy and creepy or as simple as you choose!

Always supervise your children while working with and mixing chemicals. This is NOT a taste safe experiment, so be sure to remind your children that the slime should never go into their mouth.

I recommend protecting your table or work surface while making and playing with the slime, and wear clothes that are ok to get stained. Slime will stick to fabrics and carpets and is extremely difficult to remove, hence why many parents don’t like slime. But with close supervision and proper instruction and preparation you don’t have to be scared!

As discussed in the science of slime section above, this experiment contains contact lens or saline solution, which contain borate ions. While our experiment does NOT contain Borax , the active ingredient – borate ions are also in Borax.

Prolonged exposure to Borax reportedly caused chemical burns on a few children who were making lots of slime. This is extremely rare, and preventable by following directions closely (which will call for dilution of the Borax), and wearing gloves, especially if you or your child have sensitive skin.

Materials Needed:

• Medium bowl
• 5 fl oz bottle of washable school glue (glow in the dark, glitter, color changing, etc…)
• 1/2 Cup water
• 1/2 Tbsp baking soda
• 1 Tbsp contact lens or saline solution (we used saline solution because it’s much less expensive than contact solution, but if you already have contact lens solution at home it will work fine)
• Spoon for stirring
• Optional – Halloween Add-ins (food coloring, google eyes, spiders, glitter, etc…)

• Pour the entire bottle of glue and the 1/2 cup water into a large bowl and mix well with your spoon

2. Optional – If you’re using any add-ins (such as color, glitter, spiders, etc…), stir them in now!

3. Add 1/2 Tbsp baking soda and mix well with your spoon

4. Add 1 Tbsp contact lens solution and stir with your spoon until it becomes harder to mix and slime begins to form

5. Take slime out of the bowl and knead with your hands

6. If it’s too sticky, add 1/4 Tbsp of contact solution and keep kneading. Add 1/4 Tbsp contact solution as needed until you get your desired consistency.

7. Play with your slime! Here are a few suggestions for more STEAM learning while you play:

7A. Pull on the slime slowly, does it stretch? Now pull on it quickly, did it break into two pieces?

7B. Let the slime ooze between your fingers

7C. Can you roll the slime into a ball?

7D. Can you roll the slime along the table to form a long snake?

7E. What else can your kids do with their slime? Here are a few of our favorites:

8. Store the slime in an airtight container or bag to play with over and over again

9. When the kids are tired of playing with the slime, drop it in a heap on wax paper to dry for a week. Don’t touch it while drying and it should form a cool shape to make slime art that your child will proudly display on their dresser. 😉

My kids haven’t gotten bored with their slime yet, so I don’t have pictures of this, but let me know if you try it!

What Happened:

You made an amazing and fun non-Newtonian fluid! It’s fluid but acts differently depending on the forces exerted upon it.

The polymers in the slime have covalent bonds between the molecules but hydrogen bonds between the molecules. The hydrogen bonds break more easily. Which is why when you pull on the slime it will stretch, but when you quickly pull on the slime it will tear apart.

Slime making is so simple, no wonder it has become such a big craze! It is quick and easy to whip up a new batch whenever you want, and it stores well to play with over and over again. Once you are done with your slime, you can let it dry out to make slime art !

There are so many ways to make slime that I think we will continue to try out more slime recipes and post them here as we find some that we like.

Do you like making slime at home? What is your favorite slime recipe?

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Hi, I’m Emily. I’m an engineer, mom, and wife. I encourage kids to love STEAM and motivate women to find personal happiness in their career and motherhood journeys.

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Halloween Science Projects

October is the perfect month for spooky Halloween science projects and experiments. Here’s a collection of projects to make gooey slime, glow in the dark items, and creepy pumpkins.

Ectoplasm Slime – Whether or not you believe spirits generate ectoplasm (like Slimer in the movie Ghostbusters), slime is a nice addition to a Halloween party or costume. Making slime is a practical exercise in polymer science. Experiment with ingredient proportions to modify the properties of the polymer.

Glowing Slime – Build upon a basic slime recipe by adding an ingredient that either makes the slime glow under a black light or else makes it glow in total darkness using phosphorescence .

Color Changes

Halloween Clock Reaction – In this classic chemistry demonstration, a clear solution changes to bright orange and then black.

Water Into Blood Reaction – A common pH indicator changes a clear liquid into a bloody red one.

Fake Blood Chemical Reaction – This chemical reaction makes fake blood. It’s used in the bleeding knife chemistry trick, a water-into-blood reaction, and for a special type of invisible ink that reveals messages written in “blood.”

Glow in the Dark Blood – There are several ways to make realistic fake blood for Halloween decorations or to use as part of a costume. One safe recipe is to combine corn syrup with non-toxic school glue. Making it glow depends on the additional ingredient you add.

Bleeding Paper – This special paper “bleeds” because of an acid-base reaction. Creepy, but cool.

Glow in the Dark

Glowing Water – Make glow water for decorations or to make creepy glowing drinks.

Glowing Face or Body Paint – Around Halloween, you can buy glowing make-up, face paint, and body paint. However, it’s easy to make it yourself, plus you have total control over the ingredients and colors.

Glow in the Dark Nail Polish – Similarly, it’s easy to make nail polish glow in the dark. Apply glowing polish to nails or to other surfaces as a waterproof coating.

Glowing Hands – Leave glowing hand prints or just make your hands glow. All you need is a common household chemical.

Colored Fire

Colored Fire – Turn flames any color of the rainbow using household ingredients.

Black Fire – Use simple physical science to make fire absorb light, turning its flames black.

More Halloween Science Projects

15 Dry Ice Projects – Dry ice makes spooky Halloween fog, eerie punch bowls, and creepy jack o’ lanterns. Here are 15 fun projects to try.

Frankenworm s – Turn gummy worms into Frankenworms using the reaction between baking soda and vinegar.

Dancing Ghosts – Make paper ghosts and bats fly through the air using static electricity.

White Face Paint – This easy recipe for white face paint is perfect for a last-minute skeleton, ghost, or zombie.

Hand of Doom Punch – Serve this Halloween punch at your holiday bash. A disposable glove is used to make the hand, which can be coated with fake blood. The punch glows under a black light and can be made into a bubbling, smoking potion by adding dry ice.

LED Glowies and Throwies – It’s easy to make anything glow using an LED and a coin battery.

Science Halloween Jack o’ Lanterns

Rainbow Flames Jack o’ Lantern – It’s easy to make a carved pumpkin burn in all the colors of the rainbow. The technique is based on the flame test used in analytical chemistry.

Safe Self-Carving Pumpkin – The self-carving pumpkin chemistry demonstration is spectacular, but slightly risky (BOOM!). Fortunately, there’s a safe method kids can use to push carved bits from a jack o’ lantern. It’s still a chemical reaction, but there’s less pressure and no risk of a fire.

Smoke Bomb Jack o’ Lantern – Smoke and purple sparks and flames erupt from a carved pumpkin.

Glow in the Dark Pumpkin – There’s no carving required, so this Halloween pumpkin can last for months.

Flamethrower Pumpkin – Turning a carved pumpkin into a colorful flamethrower might not make you particularly popular with your HOA, but it’s an exciting way to experience the effect heating metal ions has on flame color. If you live (as I do) where fire ants are a problem, you can light the pumpkin over the mound. The boric acid that makes the green color is a natural insecticide.

Red Flames Jack o’ Lantern – Is red your color? Use chemistry to make your carved pumpkin appear extra-hellish.

Fire-Breathing Dragon Pumpkin – This carved jack o’ lantern combines a dragon face with various chemistry techniques to make the pumpkin “breathe” smoke and fire.

How to Preserve a Carved Pumpkin – Here are tips to help your carved jack o’ lantern last as long as possible.

More Halloween Science

Halloween Periodic Table – If you’re performing scientific calculations that require atomic weights or knowledge of the elements, use the Halloween periodic table. It’s seasonal and factually accurate.

Homemade Mad Scientist Costume – Dress up while performing Halloween science experiments or be a mad scientist for a party. You probably don’t need anything to make this costume that you don’t already have in your closet!

Smoke Machines and Pets (or Kids) – If you’re using a smoke machine for a spooky vibe, be sure you understand the risk they can pose to children and pets. Learn how to use smoke or fog safely.

Turn a Halloween Science Project Into an Experiment

When you follow instructions to get an effect relating to science, it’s a project. Turn a Halloween project into a Halloween science experiment by changing something (the independent variable), making a prediction about what you expect to happen (the dependent variable), and conducting an experiment.

• For example, does the bleeding paper project give the same results using different liquids to change its color? What do you think is the explanation for the results?
• For colored fire jack o’ lanterns, does the composition of the fuel affect the color of the flames or how long they burn? Just figuring out a way to maximize the effect of a science project can become a science experiment. Make observations, take notes, and do science!

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Halloween Science Activities and Spooky Science Experiments 

Easy halloween science experiments.

Looking for some easy Halloween science activities that are perfect for kids of all ages? Look no further! These spooky and fun activities are perfect for pre-k through elementary students.

These easy Halloween science experiments are a fun, hands-on way to learn science while getting into the spirit of the season. So gather your materials, put on some spooky music, and get ready for some Halloween fun. Let’s Explore!

*We’re an affiliate – we may earn a commission through qualifying purchases from the links on this page. As always, thanks!*

Halloween Slime

Gather these materials for your slime:

Try using some red dye for a slimy fake blood effect!

Glow in the Dark Slime

Next, slowly add the liquid starch to the glue mixture while stirring continuously. Keep stirring until the mixture starts to come together and form a slimy consistency.

Puking Pumpkins

What’s Halloween without pumpkin and jack-o-lanterns?  We’ve got a few pumpkin experiments for the season.  The puking pumpkin is a fun science experiment that combines Halloween and chemistry.  This is a variation on the classic vinegar and baking soda reaction.  

Next, mix vinegar and baking soda in a plastic container or cup. Pour the vinegar into the pumpkin, filling it up to the mouth hole. Then, add a spoonful of baking soda into the mouth of the pumpkin. Be prepared to witness an erupting volcano inside the pumpkin!

You could also do a pumpkin volcano if you just hollow out the pumpkin instead of carving a face.  This way the vinegar and baking soda will foam out the top of the pumpkin.

Rotting Pumpkin

You can gather a few pumpkins for this experiment, or use your jack-lanterns if you made them.

It can be fun to make a journal and sketch or photograph the jack-o-lantern as it changes and decays.

You can follow the scientific method and make a hypothesis on which ones will rot first or show the most mold.

Pumpkin Drop STEM Challenge (Pumpkin vs Gravity!)

So, you’ve got a pumpkin and don’t necessarily want it to rot on your doorstep in the name of science.  Okay, we get it.; large orange decomposing lumps aren’t your thing.  The pumpkin drop is another fun way to “dispose” of your pumpkin at the end of the season – in the name of Science!

This is a variation on the classic egg drop STEM challenge.  Can you protect your pumpkin from splattering when dropped?

Candy Corn Science Experiments

Dissolving candy corn.

Another experiment involves dissolving candy corn in different liquids.  Candy corn is made of mostly sugar; what will make it dissolve?  

Candy Corn Foam

These candy corn science experiments provide a hands-on, engaging way to explore scientific concepts and celebrate Halloween at the same time.

Density and Bobbing for Apples

The principle of density explains why some objects float in water while others sink. Density is a measure of how much mass is contained within a given volume. In the case of bobbing for apples, the density of the water and the apples determines whether the apples will float or sink.

During the game, participants try to grab an apple from a bucket of water using only their teeth, without using their hands. This activity allows children to experience how the density difference between the water and the apples affects the apples’ ability to float or sink.

Witch’s Brew & Wizard’s Potions

Create different potions by adding different amounts of food coloring or watercolor to the cauldron. Experiment with colors and combinations to create potions with unique effects.

Candy Corn Catapults

2. Rubber bands

Want more catapult fun?  Check out our post on Catapults for Kids!

Spooky Candy Science Creations

When most kids think of Halloween, they immediately think of candy.  These fun STEM projects combine the excitement of Halloween treats with some chemistry and kitchen science.

DIY Rock Candy

If you’re looking for a Halloween-themed science activity that’s not limited to the spooky season, DIY Rock Candy is the perfect choice! This fun and educational experiment will not only satisfy your sweet tooth but also teach kids about the fascinating process of crystallization. With just a few simple materials, you can create your own delicious rock candy at home.

To make DIY Rock Candy, you will need the following materials:

Here’s a step-by-step guide to creating rock candy: 

Candy Glass

Wrap up – halloween science activities & stem challenges.

Halloween provides opportunities for plenty of science lessons and fun activities for kids.  Whether you’re making your own candy, getting a bit more use out of your pumpkins, or having fun with slime, there’s plenty to learn with some Halloween science!  

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Modern Mom Life

Where food and family fun collide.

30+ Easy Halloween Science Experiments for Kids

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• Pinterest 7

Looking for some spooktacular fun this Halloween? Get your little scientists ready for a wickedly good time with these easy Halloween science experiments for kids! From bubbling potions to creepy crawly slime, these hands-on activities are sure to delight and educate. Whether you’re hosting a Halloween party or just looking for some learning disguised as fun, these experiments will bring a touch of magic to the holiday. Grab your lab coats and safety goggles , because it’s time to dive into some hair-raising science!

Must Try Halloween Science Experiments

Get ready for a hands-on, educational, and incredibly fun way to celebrate Halloween and ignite a passion for science! Here are a few of our favorite Halloween Science Experiments.

Easy Halloween Science Experiments for Kids

Looking for a bewitching way to celebrate Halloween at home? Look no further! Dive into the world of spooky science with these fun Halloween science experiments that are perfect for kids and adults alike. These Halloween-themed science activities are so much fun!

Two Ingredient Glitter Glue Halloween Slime

Kids love making this glittery orange Halloween slime recipe! This two-ingredient glitter glue slime makes slime-making simple and less messy – which parents appreciate. Get ready to have fun with this glue mixture that looks like a pumpkin.

Halloween Pumpkin Floam Slime

Kids love getting hands-on and creating their own spooky Halloween floam slime! This adorable pumpkin-themed floam is not only fun to make but also makes a great gift or sensory play activity at home. With just a few simple ingredients including orange food coloring and minutes of your time, you can create this squishy and crunchy slime that kids will adore.

Spooky Expanding Ghost Experiment

Teach your young scientists a thing or two about carbon dioxide with this fun science experiment using ingredients you already have in your house! This simple experiment is a fun Halloween science activity everyone loves.

Electric Eels

Candy science experiments like this keep children engaged. This Electric Eels experiment involves “marinating” gummy worms in a mixture of water and baking soda and then bringing them to life in a glass of vinegar.

Melted Crayon Pumpkin

This creative project not only allows kids to express their artistic talents but also provides a unique opportunity to explore the science behind melting crayons and the properties of heat.

Creating a melted crayon pumpkin is like conducting a mini science experiment right in your own home.

Witch's Brew Oobleck

Learn about Oobleck by making this Halloween-themed witch’s brew! This is an easy Halloween toddler and preschooler activity. Younger kids love the sensory play!

3 Fall STEAM Activities for Tweens & Teens

Get ready for a great time with these Halloween stem activities that include exploding pumpkins and puking pumpkins. These activities are the perfect way to keep kids engaged in learning this time of the year!

Oozing Blood Slime for Halloween

Prepare to make the grossest, creepiest slime ever! Made with fake blood and no borax, kids love to get their little hands on this fun slime.

Magic Paint Potions

Experiment with simple kid-safe chemical reactions while making cool process art with this frighteningly fun magical paint potions art lab activity! This Halloween craft is a perfect activity for elementary students.

Pumpkin Skittles Experiment

We love this quick and easy science experiment for kids, a great twist on the classic Skittles experiment for Halloween! Simply grab your Halloween candy, pour a cup of water on top, and watch the colors change before your eyes.

Melting Halloween Play Dough

If you are searching for a fun Halloween Sensory Activity that will keep your kids entertained long enough to enjoy your hot cup of coffee, this Melting Halloween Play Dough is it!

Ghost Balloons

Turn a science experiment classic into the ultimate Halloween science for kids experience with these self-inflating ghost balloons! Draw fun faces on these little ghosts to add an art element to this fun activity.

5 Easy Dry Ice Experiments

Halloween is the perfect time of year for dry ice experiments. Your kids will love these 5 easy dry-ice activities!

More fun science experiments for kids

Kids of all ages love these fun Halloween activities and easy experiments:

• Ghost Rockets : Launch ghostly rockets into the night sky with this thrilling experiment. By combining a few household items, you can create a chemical reaction that propels a rocket high into the air. The sight of ghostly shapes soaring through the darkness will leave your guests in awe.
• Flying Tea Bag Ghosts : Caution! This activity involves the use of fire. As such, this activity should only be performed under adult supervision in a safe location far away from buildings, furniture, trees, or other objects that can catch on fire.
• Fizzy Pumpkins : Experiment with baking soda paint and vinegar to create fizzy pumpkins. Preschool kids love these types of experiments.  
• Pumpkin Volcano – Chemical reactions with baking soda and vinegar are fun to watch.
• Glow in the Dark Slime : Get ready to make some ooey-gooey, glow-in-the-dark slime! This experiment combines chemistry and Halloween fun as you mix together common household ingredients to create a slimy substance that glows under UV light.
• Dancing Ghost : make a static-powered dancing ghost.
• Floating Eye Experiment using ping-pong balls : A spooky experiment to learn all about the science of Bernoulli’s Principle with your children this Halloween!
• Oozing Pumpkin Experiment : Give your jack o’lanterns new life with a demonstration of an exothermic chemical reaction!

Which Halloween Science experiments did you try with your kids? Comment below and let us know. Share on social media with others.

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20+ Halloween Science Experiments Kids Will Love

October is one of the best months of the year.

Not only does the tempature start to drop, but October kicks off the hoiday season, with one of the best holidays ever, Halloween!

Halloween is the perfect time to explore the grosser, creepier, and spookier side of Halloween STEM.

Halloween science experiments are truly memorable, and provide tons of educational value for kids!

Easy Halloween Science Experiments for Elementary Students

Love Halloween? Love science? Then you’ll love these creepy science experiments for Halloween.

You don’t have to be a scientist to do these fun science activities at home with your kids.

These Halloween science experiments work for at home, at a Halloween party, and in the classroom to make your elementary science experiments a bit more fun!

Each of these Halloween experiments can be adapted for a wide variety of ages, from kindergarten all the way up to middle school!

What are the benefits of Halloween science projects?

Why are kids fascinated with all things spooky, gross, and creepy?

It’s definitely hard to say, but Halloween is the perfect time to take advantage of this fascination.

Kids will love learning about the science behind their favorite creepy experiences and Halloween is also a fun time to give a Halloween or spooky twist to any traditional science experiment.

Why just make a baking soda and vinegar reaction when you can turn it into a mad scientist’s lab?

Or why make a regular leakproof bag science experiment when you can turn it in to creepy brain surgery?

With a bit of imagination, Halloween science is the best science of all!

If you love Halloween science, don’t miss this list of Halloween slime recipes!

What do kids learn doing Halloween science experiments for the classroom?

These Halloween science experiments teach chlidren about a variety of scientific concepts including:

• Molecules and atoms
• Bacteria and mold growth
• Molecular bonds
• Chemical reactions
• Properties of matter

You just might be surprised how much science there is to learn within the realm of Halloween science activities!

Don’t miss the complete list of Halloween STEM activities. 

What to include in a Halloween science activity:

All Halloween science demonstrations should contain four parts:

• A question or hypothesis.
• A test or experiment.
• The recording of data.
• A re-test with additional varaibles.

Include these four elements in your science experiments to make them true experiments, rather than just science demonstrations.

Supplies for Halloween science:

Our favorite Halloween science books:

Grab these Halloween science experiment books if you need more ideas!

READY TO GO HALLOWEEN SCIENCE KITS

If you’re short on time, try ordering one of these Halloween science kits!

Now, let’s get to the creepy science experiments!

Halloween Science Experiments for the Classroom

Halloween science experiments for the elementary classroom.

Bring the spooky science of science to life this Halloween with these spooky Halloween science experiments for kids!

Hand Washing Science Experiment

In the Germs Handwashing Science Experiment kids will learn why it's important to wash your hands!

Stunning Glow in the Dark Oobleck Experiment for Kids

Try the Glow-in-the-dark Spooky Oobleck for a creepy twist on the classic non-Newtonian science experiment.

Osmosis for Kids: Blood Cell Membrane Experiment

Try the Blood Cell Osmosis for Kids Experiment and learn about how blood cells work.

Bring The Classroom to Life with a 3D Blood Model

Speaking of blood, kids will really love making a 3d Blood Cell Model!

Become a Halloween Hero when You Make Boiling Blood Slime

Make someone's blood boil when you make this bubbling slime that looks just like blood!

Bread Mold Experiment

Explore the gross side of science this Halloween when you do a classic Bread Mold Experiment.

Gross and Jiggly Halloween Jello Worms

Making Jello worms is creepy, but it's also a lesson in kitchen science! Get the Halloween Jello Worms Experiment tutorial here.

Exploding Minecraft Creeper-Inspired Alka Seltzer Rockets

If your students love Minecraft, try this Exploding Minecraft Creeper Chemistry Experiment.

The Perfect Halloween Twist on the Leakproof Bag Experiment

Get a little creepy with this Vodoo Doll Leakproof Bag Experiment.

How to Make a Spooktacular Halloween Density Jar

Halloween can mix with spooky and science lessons in this fun Halloween Density Jar Science demonstration!

Bubbling Spider Leg Potion

Practice the spooky art of witch science when you make a Bubbling Spider Leg Potion Chemistry Experiment.

Halloween Science Lab: Erupting Mad Scientist Potion

Build your own DIY Halloween Science Lab and think like a mad scientist!

Halloween Science: Build a Cotton Swab Skeleton

Create your own spooky skeletons and learn about the body with Cotton Swab Skeleton Science.

Witch-Inspired Salt Crystals Science Project for Halloween

Make salt crystals that look like witches with this Witch Salt Crystal Science Experiment.

How to Make a Ghost Cartesian Diver

Love the Cartesian diver project? This diving ghost version is even more fun!

"Brain Surgery" Leak Proof Bag Experiment

Find out what it's like to be a mad scientist with a Brain Surgery Leakproof Bag Experiment!

Edible Pitri Dish Bacteria: Bacteria You Won't Regret Eating!

Try your hand and making your own Edible Pitri Dish Bacteria.

Be the Best Science Teacher Ever with Ghost Chromatography

Learn all about what colors are lurking in your favorite marker when you try the Ghost Chromotography Science Experiment.

Science and Spooky Collide in this Skull Slime Recipe

Freak out the class with this skull slime recipe!

Share this project with a friend!

25 Easy Halloween Science Experiments for Kids

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Parents and teachers, here are 25+ easy Halloween science experiments for kids! These quick and easy experiments will help you use the holiday as a fun opportunity to explore some of our favorite topics in science. These experiments explore things like potential and kinetic energy, what happens when you mix vinegar and baking soda, or how the ancient Egyptians made mummies.

These Halloween science activities are great for the classroom or at home and are sure to get any ghoul excited! From creating exploding ghosts to making fake blood slime, these spooky experiments will have you ready to celebrate the Halloween season in style. Happy experimenting!

Table of contents

Dissolving candy pumpkins, halloween candy sink or float, halloween pumpkin skittles experiment, candy catapult, halloween jello worms, pumpkin life cycle experiment, oozing pumpkins, pumpkin spinning tops, pumpkin cup baking soda vinegar experiment, fizzing pumpkins experiment, exploding baggie ghosts, monster eyes egg science, disappearing skulls experiment, grow your own monster, apple mummies, diving ghost experiment, witches brew science, black glitter slime, halloween shooters, spooky ghost sounds, oozing blood slime, fizzing ghosts experiment, halloween thaumatropes, monster lab, brain in a bag surgery experiment, halloween experiments with candy.

These candy experiments are perfect for October when there’s candy a-plenty. It’s a great way to use leftover candy after the holiday, too.

This simple experiment only takes two minutes to set up, but kids will get a kick out of watching those sweet, sugary candy pumpkins dissolve in different liquids, such as milk, vinegar, oil, and water. You could also try this idea with candy corn!

Does your favorite Halloween candy sink or float? Try it and see! Use the record sheet to record your predictions and observations. Try it with wrapped and unwrapped candies. This is a fun way for kids to learn about the scientific method (and enjoy a little snack, too).

You may have tried the warm water and Skittles experiment before, but this one has a lovely pumpkin-themed twist. Use green and orange Skittles to outline a pumpkin shape, add the warm water, and watch the colors bleed to make a beautiful pumpkin.

Build a candy catapult to launch some of your Halloween candy into the air! Making catapults is always a hit with kids. It’s a captivating way to learn about potential energy and kinetic energy.

Try the Jello straw challenge to make gross, creepy (but tasty!) Halloween Jello worms. They’re perfect for a Halloween party. Kids will love this Halloween STEM activity for October.

Pumpkin Science Experiments

Use any of these fun pumpkin projects for a lesson on pumpkins. The life cycle experiment is especially good, but requires a lot of patience and time. Fizzing pumpkins are always a hit!

Watch a pumpkin decompose and then regrow with this fascinating Halloween experiment. This life cycle of a pumpkin experiement is a long-term project that will teach kids a lot about plant decomposition and how new seedlings can form from the seeds in the soil enriched by decomposed material.

Carve a pumpkin together and then make it ooze with a colorful baking soda and vinegar solution with added dish soap and food coloring to make it extra fizzy and colorful. Watching the fizzy bubbles ooze out of the pumpkin’s eyes, nose, and mouth is such fun! It’s a neat take on the usual pumpkin volcano experiment.

Have you ever seen a jack-o-lantern breakdance? Now you can with these cute spinning pumpkins made with wood spinning tops. Try to get your pumpkins to spin and twirl on the stem—it’ll look like they’re dancing!

Don’t have real pumpkins on hand? No worries. Make your own out of orange paper cups. Then, add those to your tray for a classic baking soda and vinegar experiment that comes pouring out of the eyes and mouths of your paper cup pumpkins.

Here’s another variation on fizzing pumpkins, this time using pumpkins made out of baking soda. You’ll need a silicone mold to make them, but that will come in handy for making other Halloween goodies, too.

Fun Halloween Science for Kids

Trick or treating is fun, but your kids will forget all about that candy (at least for a while) with these jaw-dropping Halloween experiments and chemical reactions. October is the perfect time to get future “mad scientists” excited about chemistry, physics, and more!

This is one of our favorite Halloween science activities on the list. We’ve tried different variations on the exploding baggie trick, but drawing a ghost on the bag makes it spooky and fun! Watch the ghost get bigger and bigger until—KABOOM!—it explodes.

Have you ever tried the rubber egg experiment? That’s what this is, but in keeping with the holiday theme by making it a monster eyes version. Make black and orange “rubber” eggs that look like monster eyes while learning all about the science of osmosis.

Grab some packing peanuts for this spooky science project! You’ll decorate the packing peanuts like skulls, add them to water, and see what happens. Are they biodegradable or not? Another fun variation is to try dissolving them in different liquids.

Dr. Frankenstein isn’t the only person who can create monsters. Now you can make your own with this fun balloon experiment. Draw the monster’s face, place it over the bottle of vinegar/baking soda solution, and watch him grow and grow. It’s alive! Well, not really, but it sure is fun pretending!

Learn about mummification with this neat science project. You’ll compare and contrast various desiccants (materials that dry things out) to see which is most effective.

This ghost in a bottle experiment is sure to get lots of ooohs and ahhhhs from the kids. It’s a cartesian diver experiment with a festive Halloween twist. Watch the dancing ghost as it moves up and down in the bottle or jar, seemingly on its own.

Brew up a fun potion with this witch’s brew experiment. Find out which potions fizz the best using baking soda, citric acid, vinegar, dish soap, and water to create different combinations. A little bit of color and some candy eyeballs make the mixtures look spookier.

Slime may make you crazy, but kids can learn a lot about chemistry and physics by making slime! This black, glittery version is perfect for Halloween. Add some skulls or spiders to the mix to make it extra creepy.

Work in a little Halloween physics with these cute bat, Frankentstein, and ghost rockets made out of paper, straws, and tape. Lots of factors determine how well your chracters fly, such as their shape, weight, etc. Lighter and more aerodynamic characters should fly better. Here’s a little more  science behind straw rockets .

Have some Halloween fun with physics. Use hex nuts and balloons to make balloon ghosts that emit a spooky sound. Your balloon may even pop due to heat and friction from the nut, but that just makes it all the more interesting!

Here’s another  Halloween slime recipe  that’s super spooky! Pair it with a large, empty syringe and watch it ooze out the tip. Creepy, right?

Make Halloween moon dough and turn it into a fizzing ghost experiment with a bit of vinegar to get things bubbling. The kids will shape their moon dough into ghosts (adding candy eyes and mouths, perhaps) that will then fizzle away when the eruption begins.

Do you know about the persistence of vision? That’s the concept at play here when you make these cute ghost-themed thaumatropes. Your retinas keep responding to images for a short time after you’ve seen them, and when a new one is presented, your brain can blend the two images together.  Here’s a great resource behind the thaumatrope science  to help explain to your kids what’s happening as they play with their newly created “catch the ghost” toys.

Create a monster lab using household items. All you need is water, oil, antacid tablets, and a few other materials to make a spooky lab beaker lava lamp. It’s a lot of fun and kids love the cool lava-like effect.

Become a mad scientist and learn about how plastic creates a seal around objects with this brain in a bag experiment. It’s incredible how the bag with sharp pencils driven through it doesn’t leak! Once you’ve studied it, pull the pencils from the bag, and watch as the “brain” leaks and oozes.

As you’ve probably guessed, these Halloween activities are not meant to scare or frighten your kids. Rather, they should be fun and educational for all involved! We hope that this list of 25 easy Halloween science experiments has provided you with some inspiration for how to make the most out of this fun holiday in your classroom, homeschool, or just to have some educational fun with the kids .

More Holiday Science Experiments for Kids

• 30 Christmas Science Experiments
• 35 Valentine Science Activities
• 28 St. Patrick’s Day Science Experiments

I'm Donella, the voice, heart, and wit (sometimes) behind this blog. I homeschool my pre-teen son by day and moonlight as a blogger and freelance writer. I'm a Diet Pepsi aficionado with a bookshelf that's always overflowing. My two dogs—a German Shepherd and a Beagle—are my fluffy shadows. I love planning in my bullet journal almost as much as I love hoarding notebooks and pens. I may be an introvert who missed her calling as a desert hermit, but that just gives me more time to write, right?

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Halloween science experiments & ideas.

DO IT YOURSELF SLIME – If you’ve got a little glue and some powdered borax, you can mix up some slime by following the instructions HERE .

READY TO GO SLIME KITS – If you want to make LOTS of classic slime as an activity for a party or science lesson, or if you have trouble finding Borax, a kit is the way to go. You can find some great slime making kits by clicking HERE .

MAKE SOME GHOST BUBBLES Ghost Bubbles are regular soap bubbles filled with dry ice mist. If you know the secret you can even hold them in your hand without them popping. Find out how to make Ghost Bubbles by clicking HERE .

MAKE A HAUNTED, SCREAMING CUP If you think haunted houses are scary, wait until to hear…haunted drinkware! First, check out our Chicken In A Cup experiment, but instead of pulling along the string in short bursts to sound like a chicken (it really does, trust us) pull in one continuous motion. The result is an eerie screaming cup! The only thing better than than trying the screaming cup yourself, is trying the screaming cup with LOTS of your friends all at once. Parents especially seem to enjoy that. The instructions can be found HERE .

GHOST BUBBLE SPHERE If you have got some dry ice around this Halloween, gather your friends and family and try making a Dry Ice Bubble Sphere. It’s easy, and the result will wow anyone at your party. Get all the instructions HERE .

THE SCREAMING QUARTER EXPERIMENT

If you have some dry ice from the Ghost Bubble Sphere left over, you might want to try this fun little demonstration. Dry ice is the solid form of carbon dioxide. As it sublimates, (turns back into a gas) the carbon dioxide gas escapes around the quarter causing the quarter to vibrate and make a rather spooky shrill along with occasional humorous sounds. Always wear gloves when performing this demonstration.

Halloween Science on Live! With Kelly & Michael.

More Halloween Science on Live! With Kelly & Ryan.

Here’s some Halloween Fun you should NOT try at home, but it’s still fun to watch! 

Science Experiments, Experiment Videos, and Science Fair Ideas from Science Bob

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Great Halloween Science Experiments for Kids

October 5, 2023 By Emma Vanstone 4 Comments

I’ve added a few new Halloween Science Experiments to our collection this year, so I thought I’d put them in one big round-up with lots of great ideas from other bloggers, too. Here at Science Sparks, we love making science spooky! We’ve got fizzy witchy potions, creepy chia seed slime, a spooky noise maker, a pumpkin optical illusion, spiders hidden in fizzy rocks and lots more creepy ideas.

If you try any of my Halloween Science Experiments , don’t forget to share a photo!

Halloween Science Experiments

Potions and slime.

Set up a witchy laboratory and try one of our spooky witchy potions . We’ve got potions that change colour, fizz, and potions that look and feel icky.

I set this activity up with food colouring, water, vinegar and baking soda and let the kids create their own concoctions.

Try making some bubbly witchy drinks while investigating which makes the best bubbles. These are also great for a Halloween party .

We love the look of this glow in the dark slime from Left Brain Craft Brain. This would be a great activity alongside my  glow in the dark oobleck !

Stretch and squish our Halloween slime . This would be great to give out in small tubs to trick or treaters as an alternative to candy.

Spider and Bug Experiments

Make creepy frozen hands and time how long they take to melt ( thanks to Happy Hooligans for the idea ) Can you speed up the melting? Try adding salt or warm water and watch what happens.

How about some  dancing worms like Playdough to Plato?

If you’re feeling creative, these spider drawing robots are great for learning about circuits and motors. You’ll need a small motor, wires and battery pack,k but these can be reused for lots of different science activities, so they are worth the investment.

Our spider paper plate marble run and magnet maze are lovely Halloween crafts that double up as a science project!

A spider lollystick catapult is a great way to give friends and family a trick at Halloween!

Have some fizzy fun with fizzy rocks made from baking soda with hidden bugs inside. This is a great one for kids who love baking soda eruptions.

Pumpkin Experiments

These pumpkin lava lamps make a great alternative to carving a pumpkin. The best thing is you can use them over and over again! Just add an effervescent vitamin tablet or Alka Seltzer when you want them to erupt. You can even save the empty jar for next year!

Make erupting pumpkin s like these from Growing a Jewelled Rose .

Inspiration Laboratories has some great pumpkin oobleck that’s perfect for kids who like a messy activity.

Coffee Cups and Crayons has some brilliant pumpkin pie play dough , which is great for sensory fun or learning about forces.

Learn about chemical reactions by blowing up a pumpkin balloon without touching it!

Or, how about making a drip art pumpkin like The Imagination Tree ? This would be great to use as a viscosity investigation .

How about a  Guess What’s in the Pumpkin game? These cute pumpkins hide slimy spaghetti, sticky slime and other disgusting substances.

Make a face appear on a pumpkin with this fun optical illusion . Optical illusions are fantastic science activities as they are inexpensive and very easy to make.

We’ve got some great ideas for learning as you carve a pumpkin .

Red Ted Art has some cute lanterns . These would be great for a science investigation covered in different types of paper to investigate which let through the most light.

Ghost Experiments

Try a dancing ghost like Inspiration Laboratories or jumping ghosts to learn about static electricity .

Our magnetic ghost is a super spooky way to learn about magnetism.

Scary Experiments

Scare your friends with some creepy mirror writing and a super spooky noise maker . Try experimenting with different types of cups and ribbons to investigate how the noise changes.

Add some extra realism to a Halloween costume with some fake blood !

More Spooky Halloween Science Experiments

Keep the whole family entertained with a spooky science quiz .

Make a model of a brain with playdough.

Create a Halloween house and add some light! As an extension activity, you could make a whole street and add switches to turn the lights on and off.

Design and build a vegetable monster !

How about a spooky volcano? We used this great volcano from Learning Resources and spooked it up with some pretend cobwebs.

We had great fun with this chia seed slime ( thanks to Fun at Home with Kids for the idea ). The consistency is just perfect, and it’s completely non-toxic. We made this with chia seeds soaked in cornflour and a little water.

Once all the Halloween fun is over, why not try some of these easy ideas to help use up spare pumpkins ?

Gross Science

My new book, GROSS SCIENCE , is perfect for this spooky time of year. Make fake blood, red blood cell cupcakes, fake poo, bendy bones and lots more deliciously gruesome science for kids!

Happy Halloween

Last Updated on October 31, 2023 by Emma Vanstone

Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

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October 07, 2014 at 6:58 pm

What fabulously spooky ideas, i will definitely be trying some of these out with my girls

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23+ Halloween Science Experiments for Preschool & Elementary Students

This post contains affiliate links which may earn me commissions should you click through them and take certain actions. As an Amazon Associate I earn from qualifying purchases. See full disclosure here.

Published August 27, 2022 | Updated August 27, 2022 | By Katelyn Fagan | Leave a Comment

Read on to discover fun, easy, and spooky Halloween science experiments for preschool kids and elementary students. Have fun doing Halloween-themed science activities this October!

If you’re looking for chemical reactions and Halloween fun, all of these are a fun way to introduce the scientific method with a fun activity. This Halloween season, make sure to add some spooky science experiments into your fun plans!

I still remember when we lived in Texas and we carved pumpkins for Halloween, making some pretty fun Jack o’ Lanterns.

It’s a pretty normal tradition.

What I didn’t realize is how FAST those pumpkins would mold and rot in the humid, hot Texas “Falls.”

But, it allow us the opportunity to talk to the kids about mold, rotting, humidity, decay, and so on with our kids. (And you can learn more about the science of pumpkin mold from Little Bins for Little Hands).

It was our own real live Halloween science experiment, whether we intended it to be or not.

We also started doing painted pumpkins after that year. ?

As homeschoolers, I love things like this that lend to natural learning. But, sometimes, it’s still fun to specifically set out to conduct and explore various objects in the name of science experiments.

Halloween is a fun time to do some Fall-themed science experiments and explorations. From leaves to acorns to pumpkins and spooky spiders and bats, there’s lots you can talk about this time of year.

I wanted to put together a list of great Halloween science experiments for kids!

As science isn’t really my best subject, I always like seeing what resources are out there for me already. It’s why I put together posts about the best chemistry kits for kids , monthly science kits for kids , and scientific board games .

I hope you enjoy this list and have fun doing some Halloween science with your kids!

Halloween Science Experiments and Activities

There are a ton of ideas out there, but I tried to put together a list of my favorites.

For your convenience, I divided them into Halloween science experiments for preschoolers (ages 2-5+) and Halloween science experiments for elementary students (ages 5-10+), as well as listed some Halloween slime ideas, Halloween candy experiments, and some Steve Spangler Halloween Science experiments too!

Steve Spangler Halloween Science Experiments

Steve Spangler, the new and improved Bill Nye for this generation of kids, has a huge assortment of fun Halloween science experiments, science toys, and other Halloween hands-on activities on his website.

I will share a few of them with you below, but you can find all the Steve Spangler Halloween Science experiments here .

The great thing about his kits is that it he always does a great job explaining the science behind everything and why things work they way they do, rather than just showing your kids how to do cool things. Best of both worlds!

Glow-in-the-Dark Activities

• Atomic Glow Concentrate (make liquids glow green)
• Ghost Science Kit (ghost eggs and alien marbles and explore the science of optics and refraction)
• Atomic Super Slime
• Halloween Decorating Kit (10 different science labs and party tricks)
• Glow-in-the-Dark Squidy Cartesian Diver (learn about pressure)

Spooky Steve Spangler Science Activities

• Spooky Sounds Kit
• Growing Body Parts Jar

Halloween Dry Ice Science Activities from Steve Spangler

• Dry Ice Boo Bubbles
• The Ultimate Dry Ice Science Kit
• Halloween Science Party Kit

Steve Spangler Spooky Halloween Slime

• Glowing, Color-Changing Vampire Veins Slime
• Rainbow String Slime (glow under black light)
• Color-Changing Heat Sensitive String Slime

Preschool Halloween Science Activities

Preschool aged kids love learning and exporing! I found some very easy Halloween experiments for preschoolers that are sure to delight them and be easy enough for them to understand.

Exploring a Pumpkin Science Experiment and Activity from A Dab of Glue. This one is great for learning about the insides of a pumpkin!

Oozing Pumpkins Sensory Experiments from Team Cartwright. This one is messy, but fun!

Halloween Optical Illusion Experiment from KC Edventures. This one may be more for the older preschoolers if you want them to better understand the science behind it, but they can totally make the craft and see the illusion.

Halloween Rock Painting Using Physics from From Engineer to SAHM. This one explores centrifugal force in a fun and colorful way. Add the eyes to make your own Halloween monsters.

Painting Pumpkins with Paintballs from From Engineer to SAHM. She and her son learned a lot about how different material absorbs paint more or less, and who doesn’t love chucking paintballs?

Halloween Shooter Toys from Red Ted Art. This very simple Halloween science experiment is a great way to shoot ghosts and goblins through the air instead of spitballs. ? Your child will learn about pressure, force, and more.

Bubbling Witch’s Brew Cauldron from Little Bins for Little Hands. A simple vinegar and baking soda reaction, I love how adding the right color, and putting it in a cauldron with eyeball transforms it into a fun Halloween experiment.

Vanishing Ghosts Activity from There’s Just One Mommy. I totally didn’t realize that packing peanuts could dissolve in water! This one looks easy and fun.

Dancing Ghosts Halloween Science Activity from Inspiration Laboratories. I know my kids are going to love this one and it’s so simple and easy. Teach about static electricity with this one and enjoy.

Spooky Expanding Ghost from Bitz N Giggles. Another easy Halloween science experiment for preschoolers, this basic chemical reaction puts off quite the bit of gas, enough to fill up a ghost!

Ghost Rockets Halloween Activity from Growing a Jeweled Rose. I remember doing this activity with my kids several years ago, but I love the simple way to make it a ghost- experiment. The hard part will be finding old film canisters!

Halloween Science Experiments for Elementary Students

Older kids are able to explore some concepts easier than preschoolers and are better able to handle various materials better. The following are great science Halloween experiments for them.

How Many Rubberbands Does It Take to Explode a Pumpkin? from A Heart Full of Joy. Seeing a pumpkin explode in half has got to be a joy! Plus, you can really encourage them to make guesses as to how many bands it will take.

Finding the Tensile Strength of Spider Webs from From Engineer to SAHM. I LOVE this one!! She uses various materials – yard, spaghetti, and decorative spider webs – to test out their tensile strength, using the painted Halloween rocks I showed you earlier. You could even do a few other materials too, like tape, rubber bands, or strings.

Creepy Frozen Brain Halloween Science Activity from From Engineer to SAHM. I like this one mostly because it’s a gross brain. But, learning about melting points, and the brain is fun too.

Spooky Mirror Writing from Science Sparks. This is a great one, easy enough for any child who can write words (you may have to help with spelling). It also helps them learn more about mirrors and how their eyes work.

Scented Halloween Crystals from STEAM Powered Family. I love how this transforms crystal growing into decorative Halloween science creations.

Halloween Lava Lamp Experiment from Little Bins for Little Hands. She has SO many amazing science and STEM and Halloween ideas (many listed in this post but there’s dozens more on her site) but this one is really fun. Learning about buoyancy and density via lava lamps with a spooky twist.

Shrunken Apple Heads Halloween Science Activity from Pink Stripey Socks. This one is a little creepy, and a little gross, but also kinda awesome. Kids get to carve apples, then watch natural decaying processes happen, and then decorate their dried shrunken apple heads.

How to Make Fake Blood from Science-Sparks. This one not only is creepy yet cool, but it also teaches your child how blood actually works to clot. We are studying the Human Body this year in our homeschool, so I’ll be doing this one for sure!

Halloween Candy Science Experiments

Everyone like to make delicious fall treats, so I thought I’d include some great Halloween candy science experiments!

Learn more about the science of Caramelization (perfect for caramel apples) from Home Cooking Memories. This is a super detailed science experiment for kids who are into cooking and baking.

Candy Halloween Potions from Housing a Forest. Rather than making candy, here’s a great way to use up some of that Halloween candy and learn how candies dissolve and what the layers underneath look like.

Halloween Slime Experiments

Glow-in-the-Dark Taste-Safe Slim e (perfect for black-light!) from The Soccer Mom Blog.

Visit Little Bins for Little Hands for 17 more Halloween Slime recipes like:

• Jack O’ Lantern Halloween Slime
• Bubbling Witch’s Brew Slime
• Bat Confetti Slime
• Zombie Fluffy Slime

I hope you have fun doing Halloween science experiments and activities with your kids this year!

If you need Halloween costumes, here is where to get used Halloween costumes . And here are some cheap DIY Halloween decorations for outside .

Any young scientist will be happy to do any simple experiment from this list! You can create a spooky STEM challenge for the kids or just pick a few to make them your favorite Halloween science activities. All of them have a spooky or Halloween twist and are a great time for all to do. They’re also great for sensory play, and make the best Halloween STEM activities for the kids to do. Spooky science activities are the best!

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Top 30 Halloween Science Experiments: Spooky Experiments

Welcome to our spooky laboratory of Halloween delights! We are thrilled to present an enchanting compilation of the top 30 Halloween experiments specially curated for students and teachers.

Halloween offers an opportunity to dive into mysterious reactions, uncanny creations, and spine-chilling observations. These hands-on experiments are suitable for all age groups.

Whether you’re a daring teacher searching for captivating activities or a curious student craving a thrilling learning experience, we are here to make your Halloween unforgettable.

Get ready to explore the dark corners of science and unravel the mysteries that lie within this bewitching season.

1. Ghost Rockets

This thrilling activity combines the mystery of ghosts with the excitement of launching rockets. By using a few simple materials, students can create their own “ghost rockets” that soar through the air with an eerie charm.

Learn more: Ghost Rockets

2. Magnetic Flying Ghosts

Get ready to be mesmerized by these magical Magnetic Flying Ghosts this Halloween! This captivating science experiment combines the allure of ghosts with the wonders of magnetism.

Learn more: Magnetic Flying Ghosts

3. Ghost in a Bottle

As the chemicals react, carbon dioxide gas is released, causing the balloon to expand. This experiment not only intrigues and mesmerizes but also teaches important concepts like chemical reactions and gas formation.

Learn more: Ghost in a Bottle

4. Leakproof “Brain in a Bag” Surgery Experiment

This captivating activity allows students to step into the shoes of a surgeon as they perform a simulated brain surgery. By using a specially designed bag filled with liquid and a model brain, students can practice their surgical skills without the mess.

Learn more: Steamsational

5. Frankenstein’s Hand

It’s a spine-chilling opportunity for students to learn the wonders of science while embracing the Halloween spirit.

Learn more: Frankenstein’s Hand

6. Ghosts Craft

Get ready to get crafty and summon the Halloween spirit with a ghost-themed craft project! This delightful activity allows students to create their own spooky and adorable ghosts using simple materials.

Learn more: Ghost Craft

7. Creepy Density

Explore the spine-chilling world of creepy density with this intriguing science experiment! By using a few simple materials like water, oil, and various objects, students can investigate how different substances have different densities.

Learn more: Creepy Density

8. Ghosts Mud

As they knead and mold the mud, it takes on a ghostly appearance, resembling ethereal apparitions emerging.

Learn more: Ghost Mud

9. Pumpkin Decomposition

This experiment not only teaches important concepts like decomposition and nutrient cycling but also fosters an understanding and appreciation for the natural world.

Learn more: Pumpkin Decomposition

10. Flying Tea Bag Ghosts

Students can transform ordinary tea bags into soaring apparitions by carefully cutting and decorating them to resemble ghostly figures.

Learn more: Flying Tea Bag Ghosts

11. Witches Brew

Get ready to brew up some magic with the mysterious Witches Brew! This enchanting activity allows students to create their own concoction using a combination of ingredients to simulate a bewitching potion.

Learn more: Witches Brew

12. Make Spooky Noises

Using simple objects found around the house, students can produce eerie and haunting sounds that are perfect for Halloween.

Learn more: Make Spooky Noises

13. Jumping Ghosts

This captivating activity combines the spooky allure of ghosts with the mysterious power of static electricity. Students can create their own ghostly figures using lightweight materials like tissue paper or fabric.

Learn more: Jumping Ghost

14. DIY Glow-in-the-Dark Window Gel Clings

This illuminating craft allows students to create their own spooky and mesmerizing window decorations using glow-in-the-dark gel clings.

Learn more: Science Kiddo

15. Articulated Hand Model

Learn about the intricacies of anatomy with the fascinating Articulated Hand Model! This engaging activity allows students to create a realistic hand model that mimics the movements of a human hand.

Learn more: DIY Articulated Hand Model

16. Create Wizard’s Brew or Witch’s Potion

This enchanting activity allows students to create their own mystical potions using a combination of ingredients and imagination.

Learn more: Create Wizard’s Brew or Witch’s Potion

17. Halloween Hand Melt

This experiment not only captivates and intrigues but also teaches important concepts like solubility and the effects of temperature. It’s a hauntingly exciting way for students to explore the wonders of science while embracing the spirit of Halloween.

Learn more: Halloween Hand Melt

18. Exploding Peep Geysers

As the heat builds up inside the marshmallows, they rapidly expand and release a geyser-like eruption of sugary foam.

Learn more: Exploding Peep Geysers

19. Frankenstein’s Phlegm

This slimy and gooey activity combines the creepy essence of Frankenstein with a revolting concoction.

Learn more: Frankenstein’s Phlegm

20. Pumpkin Slime

This sensory experience not only sparks creativity and imagination but also promotes fine motor skills and tactile exploration. It’s a delightfully messy way for students to embrace the Halloween spirit and engage in hands-on science.

Learn more: Pumpkin Slime

21. Spiders with Light-Up Eyes

Don’t miss out on the chance to bring your Spiders with Light-Up Eyes to life and add a spooky glow to your Halloween decorations!

Learn more: Spiders with Light-Up Eyes

22. Halloween Robots

Students can design and build their Halloween-themed robots using materials like cardboard, motors, sensors, and craft supplies.

Learn more: Halloween Robots

23. Glowing Crystal

Prepare to witness the enchanting beauty of a Glowing Crystal this Halloween! This mesmerizing activity combines the captivating allure of crystals with a touch of luminescence.

Learn more: Glowing Crystal

24. Pumpkin Power Project

This project not only sparks curiosity and creativity but also introduces basic concepts of circuits and electrical energy.

Learn more: Science Buddies

25. Jello Worms for Halloween

It’s a wiggly opportunity for students to embrace the Halloween spirit and delight with these deliciously creepy Jello Worms.

Learn more: Jello Worms for Halloween

26. Halloween Catapult

Get ready for a thrilling Halloween activity that combines engineering and excitement: the Halloween Catapult! Students can design and build their own catapult using materials like popsicle sticks, rubber bands, and a spoon.

Learn more: Halloween Catapult

27. Fizzing Eyeballs

This experiment not only engages and fascinates but also teaches important concepts of acid-base reactions and effervescence. It’s a spine-chilling opportunity for students to embrace the Halloween spirit and explore the wonders of science.

Learn more: Fizzing Eyeballs

28. Foaming Bubbly Witches Brew: A Sensory Play

Students can create their own cauldron-like container using a large bowl or bucket, filling it with water and adding non-toxic food coloring to create a bewitching potion.

Learn more: Foaming Bubbly Witches Brew

29. Spinning Spider

Get ready for an arachnid adventure that combines the creepy allure of spiders with the fascinating magnet science: Spinning Spiders! Students can create their spinning spider using materials like a small cardboard cutout of a spider, a magnet, and a string.

Learn more: Spinning Spider

30. Halloween Magic Milk

Get ready for a spellbinding Halloween experiment: Halloween Magic Milk! This captivating activity combines the eerie ambiance of Halloween with a touch of scientific magic.

Learn more: Halloween Magic Milk

Similar Posts:

• Top 100 Fine Motor Skills Activities for Toddlers and Preschoolers
• 68 Best Chemistry Experiments: Learn About Chemical Reactions
• Top 58 Creative Art Activities for Kids and Preschoolers

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Halloween Slime

Halloween is one of our favorite holidays. We know the candy can be overwhelming for some kids to receive so today we’re sharing a non-candy Halloween treat idea with this Halloween slime . You can make a large batch of one kind or make them all! Either way, kids will love receiving these adorable Halloween slime jars.

RELATED: Halloween Crafts for Kids

Halloween Slime – an Easy Slime Activity!

Now meet our 3 Halloween Slime Jars that we’ll walk you through how to make.

First is our pumpkin slime jar – made with orange slime inside and black felt for the facial features!

Next is our Frankenstein slime jar – this guy is seriously the cutest! He may be our favorite mason jar craft yet! (And we’re pretty partial to these Trolls mason jars if you haven’t seen them).

And finally (the easiest one!) a simple ghost slime jar.

Here are the three slime colors we made stretched out for you to see them.

Now let’s get into the details on how to make this Halloween slime!

Ingredients Needed to Make Halloween Slime

Repeat each of the below for each color (you’ll need to make 1 batch each if you want to make each slime jar)

Per batch: 

• 6 ounces of Elmer’s glue– we used white (2 bottles) and glitter green   and repeated the recipe 3 times. Note: we made this with Elmer’s glue. It is recommended you do not substitute with other glue as the make-up may not be the same and the recipe may not work (especially Dollar store glue many people report having problems using this).
• Orange food coloring for the pumpkin slime jar *Note: the food coloring may stain, use wax paper to cover your table when playing with it and avoid contact with anything you do not want stained.
• 1/2 teaspoon of Baking Soda
• 1½ tablespoons of Contact lens solution .  **Important:  your brand of contact lens solution must have boric acid in the ingredient list. This is what interacts with the glue to form the slime.
• Water – add 2 TBSP of water to your glue before adding baking soda if you’d like a stretchier slime

Supplies for the Mason Jar Features

– Googly Eyes

– Black Felt

– Glue Dots or Hot Glue (we suggest adults do the hot glue portion)

Watch the full tutorial video here before you get started!

Directions to make Halloween Slime

1. Get a bowl to mix your slime ingredients in.

2. Pour 6 oz of your Elmer’s glue into the bowl. Use white glue for the ghost and pumpkin slime.

3. Use your green glitter glue for your Frankenstein slime. You could also substitute the green glitter glue for white glue with green food coloring. You can save on glue by getting the large gallon size if you plan on making a large batch.

4. Mix in orange food coloring to make orange glue for your pumpkin slime. *Note: the food coloring may stain, use wax paper to cover your table when playing with it and avoid contact with anything you do not want stained.

5. Add your 1/2 teaspoon of baking soda and mix in thoroughly. Also add 2 TBSP of water here and mix.

6. Now add in your contact lens solution. We recommend adults do this part. Reminder: your contact lens solution should contain boric acid or your slime will not form. Start with half of what the recipe calls for and mix. If your slime is not forming enough, add in the rest. If you find it is still too sticky you can add a bit more.

7.  Now mix until your slime forms and begins to harden. Knead for quite some time with your hands. You may be surprised how much you need to knead to really make the slime form. If it’s not the desirable consistency keep kneading. If you find it to still be too sticky, add a bit more contact lens solution.

8. Now add your facial features to your mason jars! We used googly eyes for the ghost slime jar. We cut out a pumpkin face with black felt for the pumpkin jars. And we used black felt and googly eyes for the Frankenstein jars. Glue to your mason jars using hot glue (adults only) or glue dots for the googly eyes.

This recipe was adapted from our Unicorn Slime recipe .

Now you can play! Give these as gifts or simply have the kids play with their Halloween slime! These would also be perfect for a Halloween party. Then seal up the jars when you’re done for safe keeping and storage.

• ▢ 1 bottle of Elmer’s glue 6 oz – we used white (2 bottles) and glitter green and repeated the recipe 3 times. Note: we made this with Elmer’s glue. It is recommended you do not substitute with other glue as the make-up may not be the same and the recipe may not work (especially Dollar store glue many people report having problems using this).
• ▢ Orange food coloring for the pumpkin slime jar
• ▢ 1/2 teaspoon of Baking Soda
• ▢ 1½ TBSP of Contact lens solution. **Important: your brand of contact lens solution must have boric acid in the ingredient list. This is what interacts with the glue to form the slime.
• ▢ Optional: add up to 1/4 cup of water to your glue before adding baking soda if you’d like a more stretchy slime

Instructions 

• Get a bowl to mix your slime ingredients in.
• Pour 6 oz of your Elmer’s glue into the bowl. Use white glue for the ghost and pumpkin slime.
• Use your green glitter glue for your Frankenstein slime.
• Mix in orange food coloring to make orange glue for your pumpkin slime.
• Add your 1/2 teaspoon of baking soda and mix in thoroughly. Also add up to 1/4 cup of water to make a more stretchy slime.
• Now add in your contact lens solution. Reminder: your contact lens solution should contain boric acid or your slime will not form. Start with half of what the recipe calls for and mix in. Then slowly add in the rest. If you find it is still too sticky you can add a bit more. Be careful not to add too much or it will make your slime hard.
• Now mix until your slime forms and begins to harden. You may be surprised with how much you need to knead the slime to really make the slime form. If it’s not the desirable consistency keep kneading. If you find it to still be too sticky, add a bit more contact lens solution.
• Now add your facial features to your mason jars! We used googly eyes for the ghost slime jar. We cut out a pumpkin face with black felt for the pumpkin jars. And we used black felt and googly eyes for the frankenstein jars.

Did You Make This?

We love seeing what you’ve made! Tag us on social media at @bestideasforkids for a chance to be featured.

Slime Safety & Precautions

Note: this recipe does not contain borax. However, it is still considered a science experiment and safety precautions should still be made when creating slime. By making this slime, you agree to our site terms which you can read  here .

• Adults should handle any chemicals and products
• Adults should make the slime
• Always read and follow the labels of products used. If contact lens solution is accidentally ingested, seek medical attention immediately.
• This project is not suitable for children under 4.
• Slime should not be placed in the mouth. After playing with the slime, you should thoroughly wash your hands

For more fun slime sensory play, try making this glittery  Unicorn Slime .

More Halloween Crafts for Kids

50+ halloween crafts for kids.

Related Ideas:

How to Make Oobleck

Halloween Coloring Pages

Salt Painted Spiderweb

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21 comments on “halloween slime”.

Hi! Up above you have 1/2 teaspoon of baking soda, and down below you list 1/2 tbsp of baking soda. Which is correct? 

It is half teaspoon thanks we’ll update the post 🙂

Yes one batch will fit in one jar if or 2 small baby jars.

Would a 4 ounce jars be big enough to fit the Frankenstein face? 

You can definitely do it on smaller jars and just adjust the sizing of the face to match (smaller eyes, etc)!

Thank you! One more thing…..what size jars are those that you used? 6oz? I want to order online. Thanks!!!!

We used 8oz but 6oz or 8oz would work well!

Hi there, these are so cute! You mention 6 oz bottles of glue- do you mean 4 oz?

The glitter glue bottles come in 6oz. The white glue we prefer to buy the gallon size and then we measure out 6 ounces. The recipe is for 6 ounces of glue – either glitter glue or white school glue. Hope that helps!

Thanks so much! This is super cute and Im really excited

Hi Natalie – the batch will easily fit in a small mason jar. If you use small baby jars instead you could fit 1 batch in two small baby jars. Hope that helps!

These are small mason jars so you’d only fit about 1 batch in each. If you want to be able to fit more you could use smaller mason jars (like mini ones I’ve seen at the dollar store).

I have a class party I’m doing and have 30 kids. I’m needing to know how many baby jars this recipe will fill (if known)?

You could probably fit one batch/recipe in two baby jars. This batch fits a small mason jar probably approximately double the size of a baby jar. Hope that helps!

This looks like the perfect craft for a 1st grade class to do at their halloween party. We have 15 students in the class, do you know how many jars each batch makes?

Hi Adina, it depends on your jar sizes. These are small jars but larger than baby food jars so 1 batch would fit. If you used baby food jars you may be able to split one batch into two jars. Hope that helps!

Hello, I love this idea and I’m planning on doing it with my 4th graders. Where did you get the clear round Mason jars with lids? I need 30 of them. Thank you for your help.

If you’re buying that many check the dollar store. We got ours at Michaels. Amazon also has some but make sure you find jars that are smooth on one side for you to add the face. 🙂

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Spooky Halloween Slime

Goopy, fluffy, stretchy, oozy, creepy are some of my son’s favorite slime names to describe our awesome homemade slime recipes   and what better time to make slime then for Halloween! Whether you want to make a Halloween slime in classic Halloween colors, whip up slime in a cauldron, or turn slime into fun Halloween favors, we have the BEST Halloween slime ideas for you!

How To Make Halloween Slime

Over the last few years, we have become fascinated with making slime! At first, I thought making slime was going to be super hard, and that I would never be able to get it right. But then I tried it and loved it!

All of our holiday, seasonal, and everyday slime recipes use one of five basic slime recipes that are super easy to make! We make slime all the time now, and these have become our go-to favorite slime recipes!

Once you learn how to make slime, the possibilities are endless! Make one or all of these cool Halloween slime ideas below with spooky Halloween names like Vampire slime, Witch’s Brew, black slime, zombie slime, bat slime, spider web slime and more!

Helpful Slime Making Resources

We have the best resources for you to look through before, during, and after making your Halloween slime!

• Slime Activator List
• What Do You Need To Make Slime
• How To Fix Sticky Slime
• How To Get Slime Out Of Clothes
• The Science of Slime
• How To Make Slime Videos

The Halloween slime recipes below use common slime activators such as saline solution and baking soda, borax powder, or liquid starch. We even have a couple of completely borax free Halloween slime recipes for you to try too!

Get your free printable Halloween Slime Challenge!

Halloween Slime Recipes

Click on the links below to see each unique Halloween slime recipe. Check out the Halloween videos showing you how to make each slime!

Halloween Floam

Squishy, moldable   Halloween Floam is the perfect sensory treat for kids this Halloween. Throw in some googly eyes, and you have ghost slime, monster slime, and Jack O’ Lantern theme slimes!

Bubbling Witch’s Brew

The evil witches of Hocus Pocus would easily love this bubbling Halloween slime recipe! If you are looking for a spooky good time with a family friendly movie theme, then our bubbling, fizzing, erupting cauldron of oozing slime is perfect.

Watch the Halloween kids video and make the slime! A super cool, super stretchy and absolutely homemade Halloween slime recipe the kids will love. 

Halloween Black Slime

Hold on to your broomsticks for this one! Our Halloween Slime Recipe with Elmer’s Black Glitter Glue is fast, easy, and perfectly stretchy with just two ingredients.

Volcano Slime

This is by far one of the coolest slime recipes we have to date because it combines two things we love: slime making and baking soda vinegar reactions.

This fizzing slime volcano is a 2 for 1 chemistry activity for kids. Learn how to make a unique Halloween slime while also experimenting with acids and bases!

Bat Confetti Slime

Make this easy clear slime for Halloween and fill it with fun bat confetti for the holidays.

Spider Web Slime

This fall we created an idea for a spider web Halloween slime since my son wants to check out spiderwebs whenever we are out for a walk. I love the way Morning Dew highlights the beauty of spiderwebs. Check out a popsicle stick spider craft

Monster Slime

Monster’s Inc, Ghostbusters, Purple People Eater, whichever you like, our monster Halloween slime recipe with googly eyes is perfect for all things gooey, monster-y, and gross.

Fluffy Halloween Slime Recipes

Fluffy Slime has to be one of the most popular slime recipes we have with just one additional ingredient that gives the slime it’s fluff! Can you guess what it is? It’s been one of our favorite slime recipes to make this season!

11.  Zombie Fluffy Slime

Brains and more brains with our homemade zombie theme slime. Perfect for kids who love all things zombie for a cool Halloween slime idea.

12.  Fluffy Witch’s Slime

Find out how little Witch’s and wizards can get into the fluffy slime making fun this Halloween!

Click here to get your free printable Halloween Slime Challenge!

Orange fluffy slime.

We had to make a homemade orange pumpkin fluffy slime recipe for Halloween.

YOU MAY ALSO LIKE: Pumpkin Slime

Taste Safe Halloween Slime Recipes

Just in case you need an alternative slime recipe that’s perfectly safe if someone sneaks a taste. I know some kids still like to taste new things. Our regular slime recipes are totally NOT edible!

These Halloween slime recipes below, however, are completely taste safe. None of these should be considered a snack but they are non-toxic if a piece is ingested.

Vampire Blood Slime

Make slime taste safe and completely borax free! We tried something a little different with this Metamucil Halloween slime recipe.

Fake Snot Slime

Fake snot is a must try slime recipe for cool science, gross science, or your next Halloween party! Easy to make with a few kitchen ingredients, fake snot slime is even edible or at the very least taste safe.

Halloween Peeps Slime 

I don’t want to alarm you, but you might find eyes in your slime. Yes, I am talking about the eyes of Peeps! We tried something different around here and made a Peeps Candy Halloween slime.

Halloween Candy Free Favors

What’s better than to give out candy-free Halloween slime treats or favors this year! Maybe you are planning a mad junior science party and want something cool for the kids to take home with them! This is it!

Eyeball Slime

More Fun Things To Do This Halloween

• Halloween Science Experiments
• Halloween STEM Activities
• Halloween Art Projects, and Crafts Too!
• Halloween Board Games

Printable Halloween STEM Activities Pack

1 50+ Pages of Halloween-Themed Materials !

This Halloween project pack is suitable for home, school, and group use for kids in grades Kindergarten through elementary but is scaleable for many ages and abilities.

What’s Included:

• 25+ Halloween theme science and STEM activities with printable sheets, instructions, and useful information all using easy-to-source materials perfect for limited-time needs. Includes a Halloween engineering pack with fun, problem-based challenges for kids to solve!
• The skeleton activity pack includes building a skeleton challenge and a coding challenge! Try a skeleton bones bridge-building STEM challenge!
• Halloween theme brick printable activities for hands-on learning with math that is perfect for early finishers or home fun and reinforces basic math concepts.
• Bonus fun pack includes games and activities to round out your Halloween theme activities such as I Spy, bingo, matching, Would You Rather cards, scavenger hunt, word search, A-Z Halloween hunt, and a coloring page.
• Halloween STEAM Pack includes artist-inspired projects by Warhol, Lichtenstein, and more!

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