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25 Feb

We have a really entertaining science activity for little ones! And I bet you already have all the ingredients in your cupboard. Follow our steps to make your popping corn become hopping corn!

Hopping Corn Experiment

This corn will hop up and down repeatedly in your container for over an hour. It’s so much fun to watch (mesmerizing would be the best word to describe it) and it creates a great opportunity to talk about gases, liquids, and solids with your child.

You Will Need:

  • A clear glass container
  • Popping corn
  • 2 1/2 – 3 cups of water
  • 2 Tbsp. of baking soda
  • 6 Tbsp. of white vinegar
  • Food colouring (optional)
    That’s it! I told you you probably had it in your kitchen already.


  • Fill your jar with water and add a couple drops of food colouring.
  • Add your baking soda and stir well until it is all dissolved.
  • Add a small handful of popping corn kernels.
  • Add the vinegar and watch the corn start to hop up and down!

hopping corn science activity (1)

hopping corn science activity (2)

hopping corn science activity (3)

hopping corn science activity (4)

hopping corn science activity (5)

Onetime, my 2 year old girl, really enjoyed this activity. We measured all the ingredients out together and then she was responsible for adding them into the jar at the right time.

Talk about a terrific way to work on measurement concepts, listening skills, and practising patience too!
Pouring Vinegar Hopping Corn Although it wasn’t necessary to stir the corn once it was hopping, Onetime wanted to do this to see what would happen!

Basically the science behind the activity is that when the baking soda and vinegar combine, they react to form carbon dioxide (CO2) gas. The gas forms bubbles in the water which circle around the corn kernels. The bubbles lift the kernels up to the surface and when they get there they pop and the kernels sink again.

The “hopping” continues until the vinegar and baking soda have finished reacting. For us, it lasted over an hour!

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Preschool Activities,montessori at home