Compléter Fill in the Blanks: Understanding Combustion and FlameVersion en ligne Test your knowledge on combustion processes and flames in this engaging fill-in-the-blanks game! par Demetrius Sam Daniel 1 fire itself oxygen air Combustion is a chemical reaction in which a substance reacts with to produce heat and light . 2 arson fire combustio burning The process of burning paper , wood , or ethanol is also known as 3 Paper Coal Ethanol Candle is an example of a clean - burning fuel because it produces very little smoke . 4 ethanol fuel heat lightning patience fire The three components necessary for combustion are , oxygen , and .