2007-04-14 06:03:27 · 3 answers · asked by woojin k 1 in Science & Mathematics ➔ Chemistry
A fire extinguisher is filled with a pressurized extinguishing media, such as water, carbon dioxide, or chemical foam. When the handle is depressed, a valve is opened, and the material sprays out of a nozzle because it is pressurized.
2007-04-14 06:11:53 · answer #1 · answered by Superconductive Magnet 4 · 0⤊ 0⤋
There are several types. The old "soda-acid" types reacted a strong acid with sodium carbonate I believe. When you turned it upside down, the acid poured out of a container onto the powder. The gas formed forced out water stored in the fire extinguisher, which extinguished (hopefully) the fire.
2007-04-14 06:09:36 · answer #2 · answered by cattbarf 7 · 1⤊ 0⤋
There is normally a presure capsule inside (for a water one), or it's pressurised gas (for CO2 one) that forces the contents out once the tap is opened.
2007-04-14 06:08:15 · answer #3 · answered by Anonymous · 1⤊ 0⤋