Magic Balloons
Have you ever seen something fizz up when it touches something else? This is a type of reaction where two things come together, react and produce a gas. Vinegar is a dilute solution of acetic acid and baking soda is sodium bicarbonate, a base. Acids and bases commonly react together, and when these two mix, they form carbon dioxide gas. When you keep the gas from escaping, pressure builds up just like when you blow into the balloon, inflating it. This reaction is also an endothermic reaction, or an energy absorbing reaction, which makes the bottle cooler.
WARNINGS & SAFETY
Vinegar and baking soda can irritate the skin. Do not drink the reactants! Be careful with the water bottle, as pressure can build up.
