Charring

Charring is a process of incomplete combustion that often occurs when biological tissue (living or dead) is subjected to heat. The resulting matter is sometimes called char. Coal and charcoal are produced this way.

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Charring removes hydrogen and oxygen, so that char is composed primarily of carbon.

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Charring had a special meaning under the common law of England. Under that system, the crime of arson required charring of a dwelling - actual damage to the fiber of the material from which the structure was built - and not mere "scorching" or damage to the surface, or to surface coverings such as carpets and wallpaper.

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Combustion: Combustion or burning is an exothermic reaction between a substance (the fuel) and a gas (the oxidizer), usually O2, to release heat. In a complete combustion reaction, a compound reacts with an oxidizing element, and the products are compounds of each element in the fuel with the oxidizing element....

Biological tissue: Biological tissue is a substance made up of cells that perform a similar function....

Heat: Heat (abbreviated Q, also called heat change) is the transfer of thermal energy between two bodies which are at different temperatures. The SI unit for heat is the joule....