To "see" the carbon dioxide gas that is released during this chemical reaction we use a balloon to capture it.
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*Note: These chemicals can be purchased locally at stores such as Walmart/Target.
Video of the experiment!
The Science Behind the Reaction
The chemical reaction is formed when the baking soda (sodium bicarbonate) and vinegar (acetic acid) combine to form sodium acetate and carbonic acid. The carbonic acid is unstable and turns into carbon dioxide gas. Carbon dioxide is clear and usually dissipates in the air. The balloon captures the gas.
Remove balloon and quickly tie off end. Does the balloon float like a helium balloon? Why not?