First get permission to use kitchen equipment and ingredients.
1. Add the vinegar and baking soda to the water. The mixture will begin to fizz.
2. Drop raisins one at a time into the mixture. The raisins may sink at first. Soon they will rise to the surface, then sink, then rise again. The raisins will continue to “bounce” for at least an hour.
Combining vinegar and baking soda creates bubbles of carbon dioxide, the same gas that’s in carbonated soda. Bubbles collect on the raisins and lift them up. At the surface the bubbles escape, the raisins sink, and the process begins again.
