Good afternoon scientists! Sorry for the delay in new experiments. My little scientist and I are back in action and we just finished up the Dancing Raisins experiment. Try it with your little scientist today! 🙂
Club Soda or Other Clear Carbonated Drink
Raisins (A handful is plenty)
Large Clear Plastic Container or Jar
Kitchen Towel or Paper Towels (Optional: in case of spills or splashing)
- Open the club soda carefully for your little scientist
- Pour Contents of the club soda into large plastic container. We used the entire small bottle, but don’t fill your container higher then 3/4 of the way up.
- Place a handful of raisins into the liquid and watch as they “dance” around. (We put the whole box in but it was a little overkill).
Your raisins were able to dance in the club soda. Raisins are full of wrinkles, grooves, and gaps all along the outside. Club Soda has carbonation or Carbon Dioxide the gas that is in all soda and carbonated drinks. When we breathe out we exhale carbon dioxide. The bubbles you see in the club soda are bubbles of carbon dioxide. Carbon Dioxide forms small bubbles that slowly rise out of the club soda once the bottle has been opened or poured into another container. The outside of a raisin is full of tiny gaps, wrinkles, folds, and cerevisiaes. These opening are the perfect size for the carbon dioxide bubbles to attach to and form along the outside of the raisin. When enough of the bubbles attach to the outside of the raisin it becomes less dense than the water allowing it to float or dance around. As the carbon dioxide bubbles hit the surface of the club soda they escape causing the raisin to once again sink down to the bottom of your container.