27+ Halloween Science Experiments | The Ultimate List

Halloween also means messy Halloween science experiments. Science experiments are fun and engaging for kids (and adults!) of all ages. Enjoy!

Did you know there is a ton to be learned just from a simple pumpkin? Using this guide (and the free printable) you and your kids can observe and investigate pumpkin seeds, lines, weight, height, and more!

What’s more fun at Halloween than explosions and projectiles? Why not make a soda bottle rocket this Halloween as part of your STEM fun?

Rock candy is a scientific activity that takes only an hour or two to put together but then keeps kids engaged and learning for more than a week thereafter. 

Halloween STEM Paper Circuits

My friend Karyn over at teachbesideme.com has some super fun STEM projects with a Halloween theme – including these Halloween circuits. 

Glow In The Dark Slime

In the daylight, this Halloween slime is a nice green color. Fun and pleasant. But bring it into a dark room and it starts to GLOW. It’s very cool. And the longer this stuff is exposed to sunlight, the brighter it glows

Witch's Potion

Similar to the Oozing Pumpkin experiment, this witch’s brew is just as slimy and just as fun. 

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