club soda usually has bubbles no matter what you put in there. but when you put the raisins in the club soda, the raisins will dance around because the club soda has carbon. which makes the raisins float or as you say dance.
the raisins have salt that can be well mixed in the vinegar and baking soda. there for the reaction of the chemical mixture will be even bigger because of the salt from the raisins.
the purpose of the dancing raisins project is showing that the carbonation of the soda can float the raisins up in tiny bubbles and make them dance
When raisins are added to soda water, the bubbles in the water will attach to the wrinkles and crevices on the raisins. This causes the raisins to float to the surface due to the carbon dioxide gas being released from the soda water.
raisins will float due there carbonarion and the raisins low density level in them.
the carbon dioxide bubbles
Club soda has a clean and slightly salty taste with bubbles due to the carbonation. It is often described as refreshing and slightly bitter, making it a popular mixer in cocktails or enjoyed on its own as a non-alcoholic beverage.
soda and air (or bubbles)
The bubbles are not distributed homogeneous.
It bubbles!
Raisins dance because when you put a raisin in a lemonade with a small cup of vinegar there are bubbles gonna come up to attach to the raisins then at the top bubbles pop.
The carbon dioxide in the soda reacts with the sugar in the raisin, coating it with CO2 bubbles and causing it to rise to the surface. The bubbles pop, the raisin sinks, and the cycle begins again. The same thing happens in colas, but because colas are dark, it's difficult to see the raisins. With 7-Up being clear, it's a more impressive demonstration. And you can drink your experiment when you're done!
The carbonation bubbles in soda are the fizz.