Did you know that you can make raisins dance with just a few simple ingredients? When you drop raisins in soda, they sink to the bottom because they are heavier than the surrounding liquid. However, the CO2 in the soda clings to the many wrinkles on the raisin skin. When enough bubbles latch on, the raisins buoyancy increases and the raisins float to the top. Once the air bubbles rise to the surface they pop, and the raisin sinks back to the bottom. The process is repeated until the bubbles are gone! So cool!