When mixing the two chemicals in baking soda (called sodium bicarbonate) and vinegar (called acetic acid), you cause a chemical reaction to occur. Carbon dioxide is one result of that reaction. Once the carbon dioxide fills up the bottle, it has no where else to go but into the balloon filling it up as more carbon dioxide is created.
Instructions
1. Place a 16.9 oz. empty, clean plastic bottle without the lid on a flat surface. Spoon in two tablespoons of vinegar into the bottle.
2. Take a balloon that has never been blown up and open the mouth of it by using the first two fingers of each hand. Place your fingers inside the balloon and stretch it open.
3. Instruct a friend to spoon in one teaspoon of baking soda into the balloon using the teaspoon. Do not use the same spoon as you used with the vinegar.
4. Stretch the mouth of the balloon over the mouth of the bottle with the vinegar. Try not to spill any of the baking soda as you attach the balloon.
5. Make sure all the baking soda is transferred from the balloon to the bottle by maneuvering the balloon to get it all out.
6. Watch what happens to the inside of the bottle. Watch the balloon as it expands and cover your ears as it pops.
7. Write down your observations if you are doing this as a school science experiment.
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