7. Dancing Raisins

Watch raisins “dance” by dropping them into a glass of clear soda, such as club soda or lemon-lime soda. The carbon dioxide bubbles in the soda attach to the wrinkled surface of the raisins, increasing their buoyancy and causing them to float to the top.
When the bubbles pop, the raisins sink again, repeating the cycle. This experiment is a fun way to illustrate buoyancy and the effects of gas bubbles in liquids. Try testing other small objects to see if they’ll dance too! Learn more at Scientific American’s Dancing Raisins.



