How can you do it?
Most people have fire extinguishers in their homes and in fact, we even place extra ones in the garage where Dad hangs out. All schools and businesses are required by law to have fire extinguishers on their premises. Fire extinguishers work by removing one of the critical ingredients for a fire - oxygen. In this experiment we demonstrate this process.
You need:
1. Candles
2. 1 or 2 cups
3. Baking Soda
4. Vinegar
5. Lighter
When vinegar is combined with baking soda, the two react and produce carbon dioxide gas. The carbon dioxide gas is heavier than the surrounding air so it sinks into the bottom of the bowl. As the reaction continues, more and more carbon dioxide gas is produced which begins to slowly fill up the bowl. When the level of carbon dioxide has risen to the level of the flame, the flame will go out from lack of air.