From the kit: One balloon
You will need: Baking soda, Vinegar, 16 oz. Water bottle (20 oz. soda bottle or something similar with a small enough opening to place the opening of the balloon over the opening of the bottle)
Place about 2 Tbs. of baking soda inside the balloon. Add about one inch of vinegar to the bottom of the plastic bottle. Slip the balloon over the opening of the bottle. Hold it in place as you tip the baking soda into the bottle.
What Happens? The balloon will quickly expand as a result of the gas caused by the vinegar and baking soda reacting with each other.
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