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Also known as burning, combusting, burn, combust, combustion reaction

thumb|The flames caused as a result of a [[fuel undergoing combustion (burning)]] thumb|Regenerative thermal oxidiser|Air pollution abatement equipment provides combustion control for [[industrial processes.]] Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Combustion does not always result in fire, because a flame is only visible when substances undergoing combustion vaporize, but when it does, a flame is a ch