These awesome Halloween science experiments are great for kids of all ages. Toddlers, preschoolers, even elementary aged kids will so much fun with these Halloween science experiments, they won’t even know they’re learning. These science experiments for Halloween are perfect for at home fun and learning, or even in the classroom!

halloween science experiments - text:  21 Halloween-inspired Kids science experiments & activities- Kid with green slime, slime painting pumpkins, jelly brain, and burning ghost experiment- Kids Activities Blog
Halloween-inspired science experiments that are fun for kids of all ages!

Halloween Science Experiments

Ooodles of inspiring Halloween science projects, experiments, ideas and seasonal recipes for play to make the most of Halloween for the kids this year.

Get ready for a lot of  messy fun this Halloween with deliciously ewwwy monster slime, play dough brain surgery, pumpkin goop, melting hands, candy experiments, spooky noise makers, fizzing eyeballs and so much more.

Related: Learn About Chemical Reactions as well as Liquids and Solids With This Halloween Soap Making Activity

Halloween-Inspired Science Experiments & Activities for Kids

Science doesn’t have to be dreary and boring, especially when you mix science with Halloween fun! This Halloween season is the perfect time of year to do slimy, messy, Halloween science experiments.

It is a great way to learn, while learning about the scientific method, chemical reactions, air pressure, and more!

These are some of our favorite Halloween science experiments and hope have a spooktacular time doing them.

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Fun and Spooky Halloween Science Experiments For Kids

1. Candy Corn Science Experiment

candy corn experiment with a worksheet with blue writing and candy corn in different melted states.
Use traditional candy corn or the candy pumpkins. Either way, it’s one of the more sweet and fun science experiments!

Use candy corn and the scientific method to learn about science with this sweet Halloween science experiment. It is so much fun! Via KidsActivitiesBlog

2. DIY Monster Slime Experiment

This Halloween slime is a great experiment and sensory activity. Make a mixture that splats, sticks, oozes, flops and stretches!! just one of the genius recipes for play by Caroline Gravino of Salsa Pie for PBS Parents

3. Dripping Pumpkins Halloween Science Activity

Halloween science experiment for kids - pumpkin shown from above with melted crayon of different colors from There is Just One Mommy
Let’s see what happens to crayons when heated!

Your kids will be mesmerized by all the gorgeous colorful paint drippage! This is one of the better easy Halloween experiments, perfect for younger students and your young scientists! So fun by There’s Just One Mommy.

4. Flying Tea Bag Ghosts Science Experiment

Halloween science experiments for kids - text: Tea bag ghosts experiment - toilet paper ghost with fire from Playdough to Plato
Grab an Adult for this Science Experiment!

Kids science doesn’t get much cooler than these  fun flying tea bag ghosts! via Playdough To Plato. What a fun way to learn about convection and air pressure. I love stem education.

5. Slimy Pumpkin Fun for Toddlers and Little Ones Science Activity

Halloween science experiment - 2 children playing with pumpkins in the middle of a slimey mess of colorful slime from meri Cherry
Hands on Science!

This looks like the best, drizzly, slimy goodness. Even the moms couldn’t keep their hands out of it! see the magic play group on MeriCherry. This is such a fun experiment, the red slime looks almost like fake blood. This is one of the coolest Halloween sensory activities and great for younger kids.

5. 5 Messy Ways To Learn About The Brain Using Halloween Science Experiments

Perfect for Halloween or Mad Scientist parties – I think the play dough surgery is my favourite. Love these educational spooky science activities. via leftbraincraftbrain

6. Pumpkin Goop / Oobleck Science Experiment

The very best gloopy messy seasonal sensory play, starting with choosing the pumpkin! check out this fun recipe from sunhatsandwellieboots

more fun halloween science experiments for kids of all ages- pumpkin slime experiment, green slime activity, and oobleck science experiment
Not-so-scary science experiments for kids!

7. Fun Bubbling Slime Science Experiment

Exciting bubbling action that lasts through the day – this no-cook recipe is fun to make and fun to play with. fab idea from epicfunforkids

8. Melting Halloween Hands Science Experiment

Science experiments for Halloween - from above 4 frozen gloves with colorful ice in purple, orange, green and white from happy Houligans
This Science is Creepy fun!

Salt and Ice Experimenting – awesome activity for kids by Happy Houligans. Watch the kids work together until they get the very last Halloween goody out of the ice.

9. Spooky Eruptions Halloween Science Experiment

Kids adore fizzing activities and this one, with a Halloween twist, will delight for sure!! This is one of my favorite awesome Halloween science activities. I really love Halloween stem activities. My kids don’t even know they’re learning! via blogmemom

10. Jack-o-Lantern Squish Bag for Babies and Toddlers Science Activity

This takes only about two minutes to put together, and your kids will just  love  to play with them. One of the easiest activities in this list of Halloween science experiments. The photographs are adorable on fantasticfunandlearning

5 Great Science Experiments Using Left-over Candy

halloween science experiments using left-over candy- candy corn slime- spider made out of candy, and candy vehicle experiment
Halloween science experiments for kids using left-over candy!

11. Fun Candy Halloween Science Experiments

What to do with ALL that Halloween candy?!? ¦ in the name of science just sacrifice some! with playdrhutch

12. Creepy Crawlies & Candy Halloween Science Experiments

Marshmallows and liquorice creations. Great fun from inspirationlaboratories

13. Science Experiment With Halloween Candy

Candy science! This science experiment with Halloween candy. Learn about acids with candy and baking soda. Via KidsActivitiesBlog

15. Candy Science Experiments To Try This Halloween

Make fun experiments with the candy you can’t or won’t eat because of the colorings in it. Colorful candy is perfect for these candy experiments. This would be a fun time for older students like kindergarteners. via KidsActivitiesBlog

16. Candy Corn Sensory Slime Science Activity

Every year my kids get lots of candy and they can’t eat it all. So here are some great ideas for it! Use your left over candy corn for for a fun sensory experience with Craftulate

4 Fun Sensory Science Experiments Using Touch, Sight, Sound, and Smell

halloween science experiments featuring pumpkins and other Halloween decorations!

17. Pumpkin-cano Sensory Science Experiment

Just watch your kids faces when they see the fizzing foam come out! love this from littlebinsforlittlehands (photo above)

18. Make Some Spooky Noises With This Fun Halloween Science Activity

Makes eerie sounds like a creaking door or creaking steps with a plastic cup! defiantly making with the help of Science Sparks

19. Static Electricity Dancing Ghosts and Bats Science Experiment

Use the technique in this Kids Activities Blog to create dancing paper ghosts, pumpkins bats for Halloween static fun, Just cut simple pumpkin, bat and ghost shapes from tissue paper and watch the magic

20. Exploring Pumpkins Science Sensory Activity

Learning about the life cycle of a pumpkin – dig in and squish away with Earlylivingideas.

Ooey, Gooey Halloween Science Experiments

halloween science experiments- green foam science experiment, glow in the dark playdough experiment, fizzy eyeball experiment, rotting pumpkin science experiment

21. Fizzing Eyeballs Halloween Science Experiment

Oh My!! this is a must do activity for kids this Halloween. what fun!! photo below left by Little  Bins  For  Little Hands for b-inspiredmama

22. Surprise Eruptions Science Experiment

More baking soda and vinegar mixed with googly eyes, plastic spiders – whatever you have at hand!! great Halloween science fun via simplefunforkids

23. Glow in the Dark Play Dough Science Activity

Aren’t the effects magical!! see how to make on sunhatsandwellieboots

24. A Rotten Halloween Science Adventure

Halloween science experiments - rotting pumpkin experiment with science journal
This Halloween science Activity is so fun!

What happens to the pumpkin when you leave it to rot after Halloween? Hello, Science Project! right here on KidsActivitiesBlog

MORE SCIENCE FUN From Kids Activities Blog:

Which Halloween science experiments did you try out? Comment below and let us know, we’d love to hear from you!

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