Halloween + science = AWESOME Halloween science experiments and STEM projects! Easy Halloween experiments using simple supplies make for creative STEM projects for all ages. When you aren’t out pumpkin picking and cider donut eating this fall, try out a couple of these Halloween science experiments. Make sure to join us for 31 Days of Halloween STEM Countdown.
EASY HALLOWEEN SCIENCE EXPERIMENTS
HALLOWEEN SCIENCE
Any holiday is a perfect opportunity for creating simple but AMAZING science activities. We think Halloween tops the chart for cool ways to explore science and STEM all month long. From gelatin hearts, to wizards brew, erupting pumpkins, and oozing slime, there are tons of spooky science experiments to try.
ALSO CHECK OUT: Printable Halloween Activities
Kids love theme science activities and it gets them learning, and loving it! These Halloween science experiments and activities below work for kids ages pre-k through early elementary and above. Get started exploring chemistry and physics with easy to set up and inexpensive science activities this Halloween.
WHY IS SCIENCE SO IMPORTANT?
Kids are curious and always looking to explore, discover, check out, and experiment to find out why things do what they do, move like they move, or change like they change! Indoors or outdoors, science is definitely amazing! Holidays or special occasions just make science all the more fun to try!
Science surrounds us, inside and out. Kids love checking things out with magnifying glasses, creating chemical reactions with kitchen ingredients, and of course exploring stored energy! Check out 100 genius STEM projects to get started any time of the year including the other “big” days.
Science starts early, and you can be a part of that with setting up science at home with everyday materials. Or you can bring easy science to a group of kids! We find a ton of value in cheap science activities and experiments. Make sure to check out our Halloween inspired tinker tray.
Looking for easy to print Halloween activities?
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Click below for your FREE Halloween Projects
AMAZING HALLOWEEN SCIENCE EXPERIMENTS
Each year we add to our growing collection of Halloween science experiments and STEM activities. This year is no exception and we have a fun lineup to share. Of course, we also have plenty of Halloween slime recipes to get you started. Slime is AMAZING chemistry!
We also love to explore physics and chemistry through reactions, forces, states of matter, and more good science-y stuff. In fact, you don’t have to be a rocket scientist to enjoy our simple science experiments at home or in the classroom.
Holiday science like these Halloween experiments should be fun and stress-free for everyone! Click on the links below to read more about how to do each Halloween science experiment or STEM activity.
NEW! FLYING GHOST TEA BAGS
Think you have seen flying ghosts? Well maybe you can with this easy flying tea bag experiment. All you need are a few simple supplies for a fun floating tea bag science experiment with a Halloween theme.
1. HALLOWEEN SLIME
Our Halloween slime collection has everything you need for making the BEST Halloween slime recipes including fluffy slime, erupting potions slime, pumpkin guts slime, and even taste safe or borax free slime. The possibilities are endless once we show you how to master slime making!
And yes, slime making even fits into the NGSS standards for grade 2, states of matter!
Some of our favorite Halloween slime recipes:
2. WIZARD’S (OR WITCH’S) BREW EXOTHERMIC REACTION
An exothermic reaction may sound scary but it’s really simply and a whole lot of foamy fun. A few simple ingredients from the grocery store and you’re exploring some great chemistry for Halloween.
3. GELATIN HEART HALLOWEEN EXPERIMENT
Gelatin isn’t just for dessert! It’s for Halloween science too with a creepy gelatin heart experiment that will have your kids squealing with grossness and delight.
4. FRANKENSTEIN’S FROZEN BRAIN MELT
Wouldn’t Dr. Frankenstein be proud of your Halloween frozen brain melt science activity exploring the properties of water. Is it a liquid or a solid?
5. HALLOWEEN POPSICLE CATAPULT
Newton has nothing on our DIY popsicle stick catapult for Halloween! Explore the laws of motion while flinging eyeballs around the room.
6. ERUPTING JACK O’LANTERN
This halloween science experiment is going to get a bit messy, but it’s super cool! An erupting Jack O’Lantern is a must try at least once!
7. SPOOKY LIQUID DENSITY EXPERIMENT
Explore the density of liquids with an easy to set up spooky Halloween liquid density science experiment with items around the house.
8. PUMPKIN GEO BOARD
A twist on the classic geo board activity when you use a pumpkin instead of a board. A halloween geo board offers some great fine motor skills practice too!
9. GHOSTLY STRUCTURES
A Halloween twist on a classic STEM building activity. Challenge your kids to build the tallest ghost with this styrofoam ball project. We simply grabbed materials to use from the dollar store.
Click below for your FREE printable Halloween Projects
10. FIZZY GHOSTS EXPERIMENT
Kids love anything that fizzes, so our ghost theme baking soda and vinegar experiment is perfect for little hands!
11. HALLOWEEN CANDY CORN STEM ACTIVITIES
Iconic Halloween candy mixed with simple STEM activities for a cool Halloween STEM experience you can set up quickly.
ALSO CHECK OUT: Candy Corn Gears Activity
12. MORE HALLOWEEN CANDY EXPERIMENTS
We all know what happens Halloween night… Our kids get a ton of candy that often goes uneaten or we would wish it would go uneaten. Instead of arguing with the kids over how much candy to eat, encourage them to try candy science experiments instead.
13. GHOST BUBBLES
Build bubbling ghosts with this simple ghost experiment ever scientist will enjoy!
14. HALLOWEEN OOBLECK
Spidery Oobleck is cool science to explore and has only 2 basic kitchen ingredients.
15. SPIDERY ICE MELT
Ice melt science is a classic experiment. Add a spooky spidery theme with this Spidery Ice Melt .
17. HALLOWEEN LAVA LAMP
This lava lamp experiment is a hit all year round but we can make it a bit creepy for Halloween by changing up the colors and adding accessories. Explore liquid density and add in a cool chemical reaction too!
17. BUBBLING BREW EXPERIMENT
Mix up fizzy bubbly brew in a cauldron fit for any little wizard or witch this Halloween season. Simple household ingredient create a cool Halloween theme chemical reaction that is just as much fun to play with as it is to learn from!
18. HALLOWEEN OOBLECK
Oobleck is a classic science activity that is easy to turn into Halloween science with a few creepy crawly spiders and a favorite theme color!
19. FROZEN HANDS
Turn an ice melting science activity into a creepy fun Halloween Melting Ice Experiment this month! Super simple and super easy, this frozen hands activity is sure to be a big hit with kiddos of all ages!
20. HALLOWEEN BATH BOMBS
Kids will have creepy clean fun with these scented googly eyed Halloween Bath Bombs. They are just as fun for kids to make as they are fun to use in the bath!
21. PUKING PUMPKIN EXPERIMENT
Kids will love making their own puking pumpkin for Halloween with a few simple household ingredients.
22. HALLOWEEN BALLOON EXPERIMENT
Blow up a ghostly Halloween balloon with a simple chemical reaction.
23. GHOSTLY FLOATING DRAWING
Is it magic or is it science? Either way this floating drawing STEM activity is sure to impress! Create a dry erase marker drawing and watch it float in water.
25. ROTTING PUMPKIN JACK
Pair a fun pumpkin book with a rotting pumpkin experiment for all things Halloween science.
ENJOY HALLOWEEN SCIENCE EXPERIMENTS THIS YEAR
Click here for tons of kids science experiments to enjoy all year long!
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