Wiggly Frankenworms: Halloween Science Experiment for Kids

In honor of Halloween, we’re trying the Wiggling Worms Halloween Science Experiment.  It seems pretty straightforward. You need:

  • Gummy worms
  • 3 TBS baking soda
  • 1 cup water
  • 1/2 cup white vinegar
  • Scissors
  • Measuring cup & spoons
  • Clear glass or jar

Start by cutting the gummy worms in quarters, lengthwise.


Then put 3 tablespoons of baking soda into 1 cup of water & mix well.


Drop your cut gummy worms into the baking soda and water solution, and let them soak for at least 15-30 minutes.


Pour the vinegar into a clear glass or glass jar.  Carefully remove your worms from the baking soda solution and drop them into the vinegar, one at a time.  Don’t put too many in, or they get weighted down at the bottom & won’t dance!


After a few minutes, your worms should begin to float and dance!


Our Results

The first time we ran this experiment, the solution bubbled but the worms just sat on the bottom and didn’t dance. We tried  fresh baking soda and still no luck. Then we tried another brand of gummy worms & a different kind of white vinegar and then they started dancing!  So you might need to experiment with which kind of baking soda, vinegar & gummy worms produce the best results for you.

What’s Happening?

The worms soaked up the baking soda in the first step.  When you drop them in the vinegar, the baking soda reacts with the vinegar to form carbon dioxide gas bubbles on the worms. The carbon dioxide gas bubbles rise up through the vinegar and make the worms float and wiggle. The worms will wriggle until the reaction stops!

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