Wednesday, February 1, 2012

Pre- K experiment- Dancing Popcorn kernels

Dancing Popcorn Kernels

1 cup water
1/4 cup vinegar
popcorn kernels
food coloring (Optional)
1 teaspoon baking soda

We talked about what the children thought would happen to the kernels. Some thought they would pop like popcorn.

What did happen. The kernels stayed on the bottom until the baking soda was added. It fizzed up over the top of the jar. When the fizz settled, the kernels were coated with bubbles, and rose to the top. Then they moved up and down like they were dancing. After a while they stopped, and we added a little more baking soda and they started dancing again.

No comments:

Post a Comment