this instructable will show you how to create co2 using house hold items then use the gas to put out a candle like "magic". This instructable needs a parent help as flames are involved.
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Step 5: Want to know how it works?!?!?!?!

Picture of Want to know how it works?!?!?!?!
Co2 (carbon dioxide) is heavy than air. This means that is moves about like a liquid so you can pour the gas! Co2 puts out a flame because it smuthers it. Co2 is used in fire extinguishers.