what is fire made of?

Answer 1

In the visible part of fire (in the combustion of wood, for instance), you have :
- burning gas : the blue-green part, at the base, the hottest one. The color is different for each element burning, and can be more or less predicted (stems from excited upper-layer electrons). This is where the combustion chemical reaction takes place.
- incandescent carbon particles : the yellow-red flames, only present in the case of incomplete combustion (i.e. not in you kitchen, normally).
- unburnt carbon particles : the smoke. Smoke is actually in a solid state, not gas.

In the invisible part, you have the CO and CO2 (gas) produced by combustion. Toxic, as you know.

Answer 2

Fire is a phenomenon of combustion manifested in intense heat and light in the form of a glow or flames. The word fire when used with an indefinite article is commonly used to describe either a fuel in a state of combustion (such as a campfire or a fire in a fireplace or kitchen stove) or an instance of violent, destructive and uncontrolled burning (such as a wildfire and fires in buildings and vehicles). Since its discovery by humans, fire has been considered one of the most powerful, and important elements in the progression of humankind.

Answer 3

fire is a flame result from the oxygen burning and the flame heat and its energy depend on the amount of oxygen and if ther is any other compound also in the flame in simle way the electrons exited by heat and come bake to the ground state making the flash

Answer 4

Smoke may present the most intractable barrier of all to implementing more enlightened fire management. The
benefits of a prescribed fire program can only be realized if the public and regulatory agencies agree that the air
quality impacts are acceptable. Currently, land managers can predict fuel consumption and smoke production
from a planned burn using CONSUME and EPM and smoke transport with models such as NFSPUFF. Unfortunately,
a potential, major source of smoke remains uncharacterized and is not included in these models. We are
referring to residual smoldering combustion (RSC), which we define as combustion occurring after the convective-
plume phase of a fire has ended; often lasting for many hours or days. It has been estimated that 50%, or
more, of fuel consumption can occur by RSC under the driest conditions. Smoke generated by RSC can drift
down-slope (especially at night) into smoke-sensitive areas. In combination with local inversion conditions, this
may lead to air quality violations or complaints [e.g. “Inversion traps forest smoke, triggers air alert,” Missoulian,
Oct. 24, 1998].
Currently, there are far more questions than answers about RSC. The actual fuel consumption, and the fuel
consumption rate, by RSC have never been rigorously measured. We do not know if the gaseous composition of
the smoke changes significantly during RSC, but we have preliminary evidence it does. This could impact ozone
production in smoke plumes and ozone is the gaseous pollutant from burning most likely to exceed air quality
regulations. The production of respirable particulate matter (PM2.5) per unit amount of fuel consumption during
RSC is also unknown. This is important because PM2.5 is the fire emission of most concern from a health
standpoint. The possible role of canopy recapture or delayed photochemical processing in modifying drift smoke
is still uninvestigated. Finally, we wish to determine if there is a fuel moisture threshold, above which RSC is
unlikely to be a problem. Quantification of this would be crucial for a trade-off analysis of the relative benefits of
spring and fall burning.
We have begun to address these questions by developing a portable field apparatus to quantify the fluxes of gases
and PM2.5 during RSC. We are using this to measure the temporal profile or “diedown rate” for RSC and
determine if the integrated rate results agree with fuels inventory results. In addition, we are measuring smoke
composition before and during RSC to screen for changes in the emission factors for many gases and PM2.5. We
are also using the FSL combustion facility to burn well-characterized fuels at several different moisture contents
and quantify the amount and the rate of smoke production. This will help determine the influence of fuel moisture
content on RSC. Taken together, the results will assist in developing empirical models of RSC and useful
“stand-alone” guidelines on predicting/avoiding RSC for land managers. These guidelines could also be readily
integrated with CONSUME, EPM, fuels maps, and fire danger assessments.
Our studies include a powerful, new methodology to measure the amount and type of smoke produced by RSC
that we have developed in a series of earlier experiments. The technique is open-path Fourier transform infrared
2 The Joint Fire Science Conference and Workshop
spectroscopy, which allows real-time remote sensing of dozens of chemical compounds in smoke. We have already
made significant progress in clarifying the role of flaming and glowing combustion and pyrolysis in producing
emissions. We have discovered numerous new, but important, smoke constituents and quantified the
emissions from smoldering organic soils and duff. We also probed the effects of wind, fire retardant, fuel type,
and fuel orientation on emissions and airborne experiments in North Carolina and Alaska dramatically confirmed
the importance of our discoveries about smoke composition and ozone production in fire plumes.

Answer 5

The fire is made up of hot gaseous atoms .

Answer 6

fire isnt made of anything it is aformof heat energy .you can see flames as it is burn on a thing.

Answer 7

Fire is a rapid oxidation process that creates light, heat, and smoke, and varies in intensity. It is commonly used to describe either a fuel in a state of combustion (e.g., a campfire, or a lit fireplace or stove) or a violent, destructive and uncontrolled burning (e.g., in buildings or a wildfire). The discovery of making fire is considered one of the most important evolutions of humankind, for it allowed higher hominids to ward off wild animals, cook food, and provide warmth as well as a source of light in darkness.
FIRE :
Broadly speaking there are two types of fire, flaming and smouldering fires. The former 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 plasmas, because they are hot enough to be sufficiently ionized.
The latter, a smouldering fire, is a flameless form of combustion, deriving its heat from oxidations occurring on the surface of a solid fuel. Two common examples are glowing coals and cigarettes. Smoulder propagates in a creeping fashion over solid fuels or inside porous fuels, and its temperature and heat released are low in comparison. The difference between flaming and smouldering combustion is that the former occurs on the surface of the solid rather than in the gas phase.
Fires start when both a flammable and/or a combustible material with an adequate supply of oxygen or another oxidizer is subjected to enough heat. The common fire-causing sources of heat include a spark, another fire (such as an explosion, a fire in the oven or fireplace, or a lit match, lighter or cigarette) and sources of intense thermal radiation (such as sunlight, a flue, an incandescent light bulb or a radiant heater). Mechanical and electrical machinery may cause fire if combustible materials used on or located near the equipment are exposed to intense heat from Joule heating, friction or exhaust gas. Fires can sustain themselves by the further release of heat energy in the process of combustion and may propagate, provided there is a continuous supply of oxygen and fuel. Fires may become uncontrolled and cause great damage to and destruction of human life, animals, plants and property. Fires can also occur through instantaneous combustion. This highly disputed phenomenon is currently under research. It is known that this does occur in a vacuum[citation needed] but is disputed as to whether or not it occurs in nature. This act of combustion leads to an exothermic reaction, which in turn is able to be used as a power source. By harnessing this heat from the combustion of coal, wood, petroleum, and oils; we are able to produce power for things such as automotives, power cells, and power plants.

Fire is extinguished when any of the elements of the so-called fire tetrahedron—heat, oxygen, fuel or the self-sustaining chemical reaction — are removed. The unburnable solid remains of a combustible material left after a fire are called ash.

Fire can be considered to be a low temperature partial plasma. Plasma; an ionized gas, usually considered to be a distinct state of matter
A flame is an exothermic, self-sustaining, oxidizing chemical reaction producing energy and glowing hot flame, of which a very small portion is plasma. It consists of reacting gases and solids emitting visible and infrared light, the frequency spectrum of which is dependent on the chemical composition of the burning elements and intermediate reaction products.

In many cases such as burning organic matter like wood or incomplete combustion of gas, incandescent solid particles, soot produces the familiar red-orange 'fire' color light. This light has a continuous spectrum. Complete combustion of gas has a dim blue color due to the emission of single wavelength radiations from various electron transitions in the excited molecules formed in the flame. Usually oxygen is involved, but hydrogen burning in chlorine produces a flame as well, producing the toxic acid hydrogen chloride (HCl). Other possible combinations producing flames, amongst many more, are fluorine and hydrogen, or hydrazine and nitrogen tetroxide. Recent discoveries by the National Aeronautics and Space Administration (NASA) of the United States also has found that gravity plays a role. Modifying the gravity causes different flame types.[7]

The glow of a flame is somewhat complex. Black-body radiation is emitted from soot, gas, and fuel particles, though the soot particles are too small to behave like perfect blackbodies. There is also photon emission by de-excited atoms and molecules in the gases. Much of the radiation is emitted in the visible and infrared bands. The color depends on temperature for the black-body radiation, and chemical makeup for the emission spectra. The dominant color in a flame changes with temperature. The photo of the forest fire is an excellent example of this variation. Near the ground, where most burning is occurring, it is white, the hottest color possible for organic material in general, or yellow. Above the yellow region, the color changes to orange, which is somewhat cooler, then red, which is cooler still. Above the red region, combustion no longer occurs, and the uncombusted carbon particles are visible as black smoke. To eliminate a flame in combustion vehicles there are different steps that are taken. This depends largely on whether the fuel is oil, wood, or high energy (such as fuel for jet engines).

The common distribution of a flame under normal gravity conditions depends on convection, as soot tends to rise to the top of a general flame, such as in a candle in normal gravity conditions, making it yellow. In microgravity or zero gravity, such as an environment in outer space, convection no longer occurs, and the flame becomes spherical, with a tendency to become more blue and more efficient (although they will go out if not moved steadily as the CO2 from combustion does not disperse in microgravity, and tends to smother the flame). There are several possible explanations for this difference, of which the most likely is that the temperature is evenly distributed enough that soot is not formed and complete combustion occurs.[8] Experiments by NASA in microgravity reveal that diffusion flames in microgravity allow more soot to be completely oxidized after they are produced than diffusion flames on Earth, because of a series of mechanisms that behaved differently in microgravity when compared to normal gravity conditions.[9] These discoveries have potential applications in applied science and industry, especially concerning fuel efficiency.

Answer 8

go to
http://en.wikipedia.org/wiki/combustion...
http://en.wikipedia.org/wiki/fire...

Answer 9

What are you burning?

Answer 10

FLAMES !!!!!!!