Balloon magic - a fun science activity where you inflate a balloon using baking soda and vinegar || Gift of Curiosity
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Gas balloons, just baking soda in the balloons and vinegar in the bottle, when the balloon is flipped it blows up the balloon.
Using slow-motion photography would be interesting technique. It shows how much we actually don't see in our everyday lives, because it goes by too fast. - Emily
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Here's a great experiment for collecting gas (and showing one of the signs of a chemical reaction).
The First Manned Flight in a Gas Balloon Over Paris Giclee Print by Maurice Leloir at Art.com
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