|Put a couple of tablespoons of baking soda in 1/4 of a paper towel.|
|Fold the corners into the center of the baking soda and tuck in the edges.|
|Pour about 1 to 1 1/2 cups of white vinegar into a zip top sandwich bag.|
|Add your baking soda packet, zip it up, and lie it on the ground.|
|The bag begins to expand.|
|This is the exciting part! It pops and spills the fizz.|
Baking soda and vinegar react this way because the acetic acid in the vinegar reacts with the sodium bicarbonate in the baking soda to form carbonic acid. Carbonic acid falls apart into carbon dioxide and water. The bubbles coming from the escaping carbon dioxide cause the fizzy reaction.