Science Over Sugar: Halloween Candy Experiments for Kids

Halloween has come and gone, and we’ve got bags of leftover Halloween candy to prove it. I’m not a big fan of letting my kids eat a lot of sugar. But they absolutely love trick-or-treating, and it’s really hard to resist the tradition. So, we let them have their fun over the weekend, levied the appropriate candy tax, sneaked a few of my favorites when they weren’t looking, and now it has to go.

Luckily, they can still have plenty of fun with the leftover Halloween candy and candy-themed science experiments. From sorting games with young children to candy chromatography, there is plenty to do with leftover Halloween candy that doesn’t involve sugaring kids up before they go to school.

  • 10 Science Experiments for Leftover Halloween Candy 1 of 11
  • Candy Cromatography 2 of 11

    This is one of my kids' favorite experiments. With a coffee filter and some water, you can track which colors are in different candies. It's great for kids who are allergic to some artificial dyes to track which candy they can safely eat.
    Read more at Mama Miss

  • How Many Licks Does It Take? 3 of 11

    Let kids make a hypothesis and graphs to answer the age-old questions: How many licks does it take to get to the center of a Tootsie Pop? Of course they still get to eat the candy with this one, but there's plenty of math and science involved as a reward!
    Read more at A Mom With a Lesson Plan

  • Expanding Gummy Bears 4 of 11

    What happens when you soak gummy candies in water? How about other liquids? It might be fun to measure and compare different brands and colors, too. And for the grownups — you can soak gummies in, um, other liquids for a tasty treat. 
    Read more at Mama Smiles

  • Tectonic Candy Plates 5 of 11

    This is a fun way to visualize the effects of tectonic plates. A simple scratch through the chocolate portion of the candy bar can show kids what happens on a fault line.
    Read more at Science Matters Blog

  • Pop Rocks 6 of 11

    No, you can't die by eating Pop Rocks and soda together, but you can blow up a balloon with the combination! Everyone's favorite scientist has tons of projects for kids, including this one featuring Pop Rocks candy.
    Read more at Steve Spangler

  • Candy Potions 7 of 11

    Mix a variety of candies with water. It's fun to see the mix of colors and let kids create their own potions.
    Read more at Housing a Forest

  • SweetTarts Erosion 8 of 11

    This is a very simple experiment with vinegar and hard candies like SweetTarts and Smarties. Pour the vinegar over the candy to see the effects of erosion.
    Read more at What Are We Doing Today, Mom?

  • Candy Acid Tests 9 of 11

    Add water and baking soda to candy to test for acid reactions. This works best with sour candies like SweetTarts and Nerds — both of which my kids collected in spades last week!
    Read more at Science Gal

  • Microwaving Peeps 10 of 11

    Okay, so this technically features Easter Peeps, but I've got a stash of pumpkin and ghost Peeps, too! The kids love to put them in the microwave and watch them expand. (You can also roast Peeps over a fall bonfire for extra delicious s'mores!)
    Read more at I Hear Exercise Will Kill You

  • Balancing M&Ms 11 of 11

    Here's a simple one for younger children. Experiment with balance, weights, and measurements using this creative tool and your leftover Halloween candy.
    Read more at Inspriration Laboratories

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