2007-06-23 10:30:45 · 17 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
If you mean the flame then it's the product of a highly exothermic reaction (for example, combustion, a self-sustaining oxidation reaction). In other words, it is the visible (light-emitting) part of a fire. If you mean combustion Then it's is a complex sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames.
In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen or fluorine, and the products are compounds of each element in the fuel with the oxidizing element.
2007-06-23 10:55:17 · answer #1 · answered by onepintcan 2 · 0⤊ 0⤋
Fire is just extremely hot gas. This is usually just air being heated up as a reaction which gives out heat (eg. burning wood) occurs. It doesn't usually involve any chemicals unless you're burning liquids or gases - where it depends on the chemicals involved, but oxygen is usually involved because burning things uses up oxygen, and carbon dioxide is often given off when things are burnt.
2007-06-23 10:41:34 · answer #2 · answered by Nayer 1 · 0⤊ 1⤋
The flame of a fire is caused because there is enough heat to cause molecules in the air to gain/lose electrons or ionize. When an electron is gained by an atom it releases light.
You can prove it by putting a flame near an electroscope that is charged. The flame will neutralize it because the charged ions in the air will go into the electroscope and balance out.
2007-06-23 11:21:19 · answer #3 · answered by smilam 5 · 0⤊ 0⤋
Fire does not have chemicals. It is a plasma, neither entirely solid nor gas and it burns oxygen or some other kind of fuel. A gas flame is ignited gas. An oil flame is ignited oil. A candle flame is ignited fibers (the wick) fed by a flammable substance, wax.
2007-06-23 10:35:24 · answer #4 · answered by Anonymous · 5⤊ 1⤋
FIRE is LIGHT.
it is just light u c because of high energy released due to chemical reaction that causes excitation of electrons in the gas atoms around the reaction then the subsequent de-excitation releases photons which forms light, so it is just what u can say excited gases
2007-06-23 12:14:36 · answer #5 · answered by M!z0 3 · 0⤊ 0⤋
A simple question like 'what is fire?' has produced so many different answers. I know that fire is not gas and it is not plasma (plasma is a state, like solid or liquid!) I would say that fire is energy; one embodiment of heat energy. But, like everybody else, mine is simply a guess.
2007-06-23 11:36:25 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Fire is a biproduct of particles "excitement". It is a form of energy that is released when a particle goes from a high to a lower energy state. There is gas inside a fire, which is burnt particles. It matters what you are burning.
2007-06-23 10:34:43 · answer #7 · answered by Anonymous · 2⤊ 0⤋
The link below give a good explanation of what fire actually is. "Rapid combination of oxygen with fuel in the presence of heat. Oxygen, fuel, and heat are the essential ingredients of fire. " is a quote taken from the link.
2007-06-23 10:49:31 · answer #8 · answered by tattyhead65 4 · 0⤊ 0⤋
A Plasma, the Result of Free-Radical Oxidation.
2007-06-23 10:55:05 · answer #9 · answered by Anonymous · 1⤊ 1⤋
fire is the gas molecules being heated and thus giving off a different color spectrum, just like heated steel turns red.
2007-06-23 11:27:35 · answer #10 · answered by PD 6 · 0⤊ 0⤋