The Crime of Arson

Fire is a chemical reaction in which fuel, heat and oxygen

combine in a chain reaction (US Army). Fuels are decomposed into their gaseous elements by heat in a reaction known as pyrolysis. When wood is heated, for example, it pyrolyzes into hydrogen, oxygen, ethane, and methane gases, and into methyl alcohol. It is these highly flammable vapors that burn. Fuel in its natural form as a vapor, such as natural gas, does not need to be pyrolyzed to burn. Only gases burn, so solids and liquids must be heated until they vaporize before they can burn.

Heat ignites the fuel and begins the chemical reaction, but once this has happened, the fire produces its own heat and becomes self-generating as long as it has access to fuel and oxygen (US Army). The ignition point of a fuel is the lowest temperature at which it will ignite, and every substance has its own ignition point, which is a constant. Once a vapor is heated to its ignition point it will igni

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Approximate Word count = 1081
Approximate Pages = 4 (250 words per page)

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