Dancing Raisins - Science Experiment

Here is another experiment called 'Dancing Raisins'. See what we did...

Question: When bicarbonate soda and vinegar are mixed together what happens and why?

Hypothesis: We all agreed that the baking soda and vinegar mixture would go fizzy. But we were not quite sure why at this stage. Some people thought that the raisins would jump out of the jar and others thought they would move around in the jar.

Equipment:
10 raisins
1 tall glass
2 teaspoons of baking soda
white vinegar

Method:
1. Place the backing soda in the glass
2. Slowly pour the vinegar into the glass (be careful it doesn't overflow!)
3. Drop the raisins into the glass, and watch them bounce up and down

Investigation Results:
We added vinegar to the baking soda and it fizzed up. Then when we dropped the raisins into the mixture and they bounced up and down. The science behind this is when the baking soda and the vinegar are mixed together they create carbon dioxide. The bubbles attach themselves to the raisins and take them to the surface. When the raisins get to the surface the bubbles pop and the raisins go back to the bottom.

We also tried this experiment with fizzy drink because it also has carbon dioxide. This worked but not as strongly as the baking soda and vinegar.

Here is some pictures of this: