Liam put some baking soda in a balloon which he then attached over the top of a bottle that had some vinegar in it. When he tilted the balloon, the baking soda mixed in with the vinegar and caused a chemical reaction. The balloon quickly filled up with a gas. When we tied the balloon up and dropped we thought it would float but it just fell to the ground. The gas inside was a heavy gas called carbon dioxide. Thank you Liam for your awesome experiment.
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