Dancing Raisins Science Experiment

Aim:

The aim of this fun science fair project is to show raisings jumping up and down in water.

Materials Required:

  1. A bottle of carbonated water (Soda)
  2. 4 or 5 raisins (dry grapes)
  3. A glass

Procedure:

  1. Fill half of the glass with the carbonated water.
  2. Drop the raisins into the glass.
  3. Wait for sometime and see the raisins dancing.

Explanation:

We all know that soda (carbonated water) contains dissolved carbon dioxide. When kept open this dissolved gas escapes to the atmosphere. This gas gets collected in the uneven surfaces of the raisins and will raise them to the surface. As a result the raisin moves upward. On the surface the gas leaves the resins and escapes to the atmosphere. This causes the resins to sink again to the bottom of the glass. This process is repeated until all the gas in the glass has escaped.