Learn how to make raisins twist and shout with this easy-to-follow experiment.
We all know raisins make for a delicious, healthy snack. But, with this surprisingly simple science experiment, they can also become your new dance partners. Normally, when you place raisins in water, they sink to the bottom of the container, since they’re slightly denser than H20. But, by adding baking soda and distilled vinegar, you can create bubbles of carbon dioxide. These bubbles attach to the raisins’ rough skin and lift them up – almost like miniature life jackets. Once the bubbles of CO2 pop, the raisins sink back down, and the process begins all over again, creating a “dancing” effect. Learn how to concoct your own raisin dance-a-thon by following the instructions below.
1 clear glass or cup filled halfway with water
1 tbsp of baking soda
1 handful of fresh raisins
Add the baking soda to the glass of water.
Drop a few raisins (6-7) into the glass of water. Note that they sink to the bottom.
Now add enough vinegar to fill the glass three-quarters full.
Watch as the raisins, buoyed by the carbon dioxide bubbles that attach to their skin, rise to the surface of the water and fall again.
As the carbonated water flattens, the raisins will dance less. Refresh the water mixture in order to keep the raisins at their move-busting best.