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Eyeball Surprise Science Activity to put the STEAM in Halloween

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal. #halloween #halloweenparty

Here’s a fun kids Halloween party game or Halloween kids activity that doubles as a cool science lesson: Freeze glow-in-the-dark bouncy ball eyeballs (affiliate) in baking soda and water, and then have kids spoon vinegar on top to reveal the eyeball surprise! It’s a great way to put the STEAM into Halloween!

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal.

Check out the bubbling vinegar as it hits the baking soda eyeball in a science reaction…

Remember the Rescue Han Solo from carbonite kids game that we played at Elise’s Episode 6: Return of the Birthday party? This easy Halloween game is a riff off of that game that was a HUGE hit!

Star Wars birthday party game: vinegar and baking soda Free Han Solo from Carbonite kids party game

This time instead of Star Wars minifigures, I hid these glow-in-the-dark bouncy ball eyeballs and encased them in baking soda using this baby food freezer tray. Halloween party guests start off with a small bowl of vinegar with a spoon, and a mysterious white ball on their plate. Ooh …what’s inside?!?!?

Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal. Fun and easy kids Halloween party game!

It’s a super fun and easy kids Halloween party game that brings the smiles.

Halloween monkey costume

This post contains affiliate links which means that products I recommend may give me a nominal commission at no extra cost to you. Thanks – your clicks help me make more free DIYs!

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Supplies for making this fun kids Halloween STEAM science activity and Halloween party game:

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Glow-in-the-dark bouncy ball eyeballs

Glow-in-the-dark bouncy ball eyeballs

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Neon bouncy ball eyeballs

Neon bouncy ball eyeballs

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4lb box of baking soda

4lb box of baking soda

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Ice cube and food freezer tray

Ice cube and food freezer tray

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White vinegar

White vinegar

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Halloween spiderweb plates

Halloween spiderweb plates

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How to make a fun kids Halloween party game: Eyeballs surprise science experiment

Step 1: Make the frozen eyeballs

We used the same recipe from my free Han Solo from carbonite game that we played at Elise’s Star Wars birthday party. This recipe is easy enough that kids can do it on their own.

Making baking soda + vinegar ice cubes for a science-inspired Star Wars birthday party game

You’ll need a big box of baking soda and a larger ice cube tray – I like this baby food freezer tray that I still use now that my kids are older to make purees for this sweet potato crackers recipe and other recipes. Freeze as directed and then store in the freezer until party time.

Step 2: Pour vinegar onto the frozen baking soda eyeballs

Give each party guest their own plate, bowl of vinegar, and a spoon and uncover the secret mystery!

Playing kids Halloween games: eyeball surprise

Step 3: Play with creepy bouncy eyeballs

Rinse off the bouncy eyeballs and then use them for your next kids Halloween party game.

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal.

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Be sure to pin this Halloween science activity and kids Halloween party game

Fun kids Halloween party game: Eyeball surprise! Freeze glow-in-the-dark eyeball bouncy balls in baking soda and water, then spoon on vinegar to reveal. #halloween #halloweenparty

Be sure to check out more Halloween craft and DIY projects like these kid-friendly Halloween pumpkin and skull felt bracelets and DIY Halloween costumes ideas.

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