Sinking Peeps and Marshmallows

This Peeps candy experiment sends marshmallows diving to the bottom of a bowl!
What you need:
  • Peeps marshmallow candies
  • Container of water
  • Cutting board and cornstarch (optional)

What to do:
  1. Smash the Peeps marshmallow by rolling it between your palms or flattening it against a hard surface.
    (Hint: sprinkle a cutting board with cornstarch and roll the Peeps in cornstarch to keep it from becoming too sticky as you smash it. You may want to flatten it with a rolling pin.)
  2. Roll the marshmallow into a ball to make it less buoyant.
  3. Drop the smashed Peeps in water.
  4. Does the candy sink?

What's happening:

To sink a Peeps marshmallow, you must make it denser by making it smaller. If you smash it to remove air bubbles and make the marshmallow more compact, you can make it denser than the water. Then it will sink.

Play a game with your friends to see who is strong enough to sink a marshmallow. Anyone who manages to sink a marshmallow becomes a marshmallow champion!

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