English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

we can feel fire... but we dont know what are the matter it is made up of.. at the same time, we dont refer fire as energy.. why?? what exactly is fire?? what is it made up of??

2007-01-08 18:15:54 · 18 answers · asked by honey 1 in Science & Mathematics Physics

18 answers

well its very tricky qustion bt one answer may be
Fire is the rapid oxidation of a fuel (combustion) with associated flame, heat, and light. The flame itself is a thin region of gas where intense chemical reactions are taking place. The reacting gas in this area is often hot enough to glow visibly, although some flames can be nearly invisible. Typical flames are just incandescent gas, and are not plasmas, as they are not hot enough to be sufficiently ionized.

2007-01-08 18:53:58 · answer #1 · answered by mjiitr 1 · 1 0

Fire is a form of combustion. Most typically, the word fire refers to the combination of the brilliant glow and large amount of heat released during a rapid, self-sustaining exothermic oxidation process of combustible gases ejected from a fuel. The flames are a body of gas that releases heat and light. Fires start when a fuel is subjected to heat or another energy source, e.g. a match or lighter, and are sustained by the further release of heat energy until all the combustible fuel is consumed.

2007-01-09 04:29:07 · answer #2 · answered by Anonymous · 0 0

Fire is a form of combustion. Most typically, the word fire refers to the combination of the brilliant glow and large amount of heat released during a rapid, self-sustaining exothermic oxidation process of combustible gases ejected from a fuel. The flames are a body of gas that releases heat and light. Fires start when a fuel is subjected to heat or another energy source, e.g. a match or lighter, and are sustained by the further release of heat energy until all the combustible fuel is consumed.

2007-01-09 04:03:36 · answer #3 · answered by Anonymous · 0 0

Combustion occurs when a fuel bonds with oxygen. This reaction gives off energy in the form of heat and light.

Example. lets say you have a lump of coal or carbon. That oxidises in your fireplace to become carbon monoxide. The molecules of carbon monoxide become more energetic in this reaction. This energy is radiated away as electromagnetic radiation . This radiation can be felt as heat (Infrared light for simplicity) and visible light (generally red or orange) Very hot flame will appear blue, because the particles are more energetic, vibrate faster and therefore produce shorter wavelength light.

hot air is less dense than cold air, because there is a larger space between the atoms as they bounce around energetically. this causes hot air to rise, known as convection. this is why flames appear to rise and flicker. The particles eventually cool down sufficiently that they stop emitting light that we can see, This happens at the top of a flame. At the top of a candle flame, you can see the fire stop and smoke begin. The smoke is the partially burned fuel that is being lifted due to the convection.

To put out a fire, you just have to stop the chemical reaction of oxidation, by either removing the fuel, smothering it to stop the oxygen supply, or cooling it down sufficiently so that the chemical reaction cannot take place.

So fire is made of hot energetic molecules of oxidised fuel!

2007-01-09 02:31:08 · answer #4 · answered by Graham S 3 · 0 0

I dont think dashes is correct.fire is not an energy because energy is heat energy which is liberated during fire.Fire is a partial plasma.plasma is the fourth state of matter .if you want to know more about fire and plasma search plasma on this website

2007-01-09 02:30:50 · answer #5 · answered by Vaibhav Khurana 1 · 0 0

Fire is the result of the simultaious combustion of oxygen and a fuel source. A perpetual chain reaction gives off heat and light as a by-product of this combustion, until one of the two required elements is removed or cut off.
fire is energy!!! we use the energy to say.... heat water.

2007-01-09 02:26:57 · answer #6 · answered by luvchefou812 1 · 0 0

I'll tell you exactly what happens in fire. Actually, A gas always leaks from the material you are burning, It reacts with the gases in air due to the heat from the matchstick or any other source. soIt chemically combines with other atoms and a lot of heat is produced which you see as the fire.

2007-01-09 06:15:56 · answer #7 · answered by Anonymous · 0 0

Fire is gas.
Fire occurs during combustion
The heat generated heats the gas so much that it starts glowing. This is the reason that fire is limited near the place of combustion as the heat reduces with distance and is not enough for the gas to glow.

2007-01-09 05:44:54 · answer #8 · answered by shubhopriyo 2 · 0 0

actually we do refer to fire as energy (or at least a form in which it is released), and we now know what matter its made up of.

fire is the transition of matter from one state to another, either solid to gass (sublimation), or liquid to gas (vaporization). energy in the form of heat is released as a biproduct. fire is made up of a combination of the elements involved, namely oxygen and something else. for instance when you burn alcohol you get water and carbon out of it along with energy in the form of light and heat (i.e. fire)

2007-01-09 02:21:33 · answer #9 · answered by Dashes 6 · 0 0

Fire is a energy. It is alive because it breath and move around. Since it not a solid object at all nor liquid like water but energy that move like water.

2007-01-09 02:27:14 · answer #10 · answered by codeworx7 3 · 0 0

fedest.com, questions and answers