This is one of my favorite experiments. I bought a kit on clearance at a discount store and it is really easy. You can do this with a balloon too. I will explain below howo to do that.
For this I fulled the rocket with vinegar and placed baking soda in the tube on the base. Put them together and blast off!
To make this with a balloon and soda bottle is basically the same formula. You would just need to partially fill a soda bottle with vinegar and place some baking soda in the balloon. Put the balloon on top of the bottle and watch the ballooon fill until it blasts off!
This works because when vinegar is mised with baking soda, carbon dioxide if formed. When more and more carbon dioxide is formed and it can not hold any more gas, it creates thrust which blows off your rocket or balloon. This is a demonstration of Newton's Law of Motion. This is the same motion that real rockets use!
To make it an experience you can try to answer:
Does the amount of vinegar or baking soda affect the amount of carbon dioxide produced, or change the distance of flight?
Does the size of the bottle or rocket affect the amount of carbon dioxide produced, or change the distance?
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