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 oxygen air itself fire Combustion is a chemical reaction in which a substance reacts with to produce heat and light . 2 combustio fire burning arson The process of burning paper , wood , or ethanol is also known as 3 Paper Coal Candle Ethanol is an example of a clean - burning fuel because it produces very little smoke . 4 patience lightning heat fuel fire ethanol The three components necessary for combustion are , oxygen , and .