We all remember the baking soda and vinegar volcanos. Now we're taking it another step and using the created gas bubbles to lift the popcorn kernels. When the bubbles pop, there is nothing to hold the kernel at the top of the cup so it floats down to the bottom until more bubbles form on it causing it to rise again.
Even young children can understand the concepts of matter with this experiment. Try mixing the baking soda with other liquids. Does it form a gas? Mix the vinegar with other solids such as salt. Does this mixture form a gas? Your kids will love kitchen Chemistry!
- Clear glass
- 2 Teaspoons of baking soda
- 1/2 Cup vinegar
- Popcorn Kernels
- Put the baking soda in the glass then slowly pour in the vinegar.
- When the bubbles have subsided, put the kernels into the glass.
- The kernels will begin to rise and fall. Try adding raisins or other small objects.
- We recommend placing a rimmed baking sheet under the experiment before you start.