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Thursday, December 3, 2020
Home Education Make a Puking Pumpkin

Make a Puking Pumpkin

STEAM Fair 2020 Activity

Thanks to Chesapeake Family Life

Carve your pumpkin, add a little baking soda and vinegar to see a great reaction.

What you need:

  • Carved pumpkin
  • 1/2 cup baking soda
  • 2 cups of white vinegar
  • Food coloring (for the puke)


How to make a puking pumpkin

  1. Add baking soda to inside pumpkin

    Take the top off your pumpkin. Now add baking soda (about 1/2 cup should be right, but adjust as necessary for best eruption). Be careful it doesn’t poof right out the mouth!

  2. Mix vinegar and food coloring in container

    In a container mix vinegar with some orange food colouring (or whatever colour you want). We used about 2 cups of vinegar.

  3. Add vinegar mixture to inside pumpkin

    Now slowly pour the vinegar into the pumpkin.

How does it work?

Vinegar is Acetic Acid. Baking soda is a base also known as Sodium Bicarbonate. Mixing an acid and a base, creates carbon dioxide, the gas that causes the bubbling during the reaction.

What next?

Try changing the food coloring for different vomiting effects.

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