2006-09-21 23:29:33 · 5 answers · asked by Robert A 3 in Science & Mathematics ➔ Chemistry
Best Answer - Chosen by Asker
Fire is a chemical reaction that occurs.. (oxidation) where oxygen combines with (usually) carbon. The result is exothermic (that's how the flame keeps going) the flame itself is formed (again usually) by carbon atoms and molecules floating off while they are still reacting. When the oxidation reaction stops.. that is the edge of the flame. When there is nothing left for the oxygen to react with, the flame dies out.
2006-09-22 13:13:23 · answer #1 · answered by 10Speed 2 · 0⤊ 0⤋
Fire is nothing more than oxydation of a material, that is combination of oxygen with another element. The difference with other oxydations is the rapidity of the reaction and the level of heat generated:
Slow oxydation: rust on a piece of metal; very small increase in temperature.
Rapid oxydation: fire burning wood, large enough exothermic reaction to project burning matter away from the source (the flames)
Very rapid oxydation: explosion, large exothermic reaction.
All aspects of the same thing!
You can actually accelerate or slow down the reaction:
Gun powder can simply oxydise (gets red).
You can burn it with nice flames.
Enclose it in a tube, and you get a banger!
2006-09-22 00:50:47 · answer #2 · answered by just "JR" 7 · 0⤊ 0⤋
fire is a chemichal reaction which creates heat (and nice flames, haha, sorry). anyway, it burns, for instance wood, buy sperating the different substances of which wood consists. the heat generated by the fire breaks the links/ connections or whatever you wanna call it, between the molecules of the wood-substances, this causes the molecules to fall apart and that is when the wood starts to break into pieces. if the heat is hot enough all the bonds will break and then the wood will completely dissolve into air, however, a campfire will never be hot enough for this and therefore we will always see the reamains of our firewood after the fire has gone out, in the form of solid substances!
2006-09-21 23:40:16 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Fire is a process of rapidly oxidizing a substance with using the same substance & oxygen from atmosphere as fuel.... It is an exothermic reaction & emit energy....
When the substance is on fire it being oxidized with Oxygen & turning into residual state becoz of high temprature in fires...
2006-09-21 23:41:02 · answer #4 · answered by Ashish Samadhia 3 · 0⤊ 0⤋
It's something really really hot that you shouldn't touch.....
2006-09-21 23:36:41 · answer #5 · answered by Punkbaby 1 · 0⤊ 0⤋