First we got a beaker and filled it with 200ml of water. Then we put in 1 Alka-Seltzer into it. Next we added 10 raisins and it started to fizz. The raisins sunk to the bottom and bubbles were attracted to the raisins. After that the gas bubbles lifted the raisins to the top of the beaker and then the gas evaporated into the atmosphere and the raisins fell to the bottom.
By Safa and Ruqqiya
