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-βexothermic chemical reactionβ (release of βheatβ + βlightβ) between a βfuelβ and an βoxidantβ-
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*STEP 1* β>
βIGNITIONβ
(via βpilot lightβ or βelectric sparkβ)
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β*βCHEMICAL REACTIONSβ* β
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