Matching Pairs Combustion Concepts MatchOnline version Test your knowledge of combustion with this fun matching pairs game! by Alessia Ferrari 1 Fuel 2 Incomplete combustion 3 Flame 4 Yellow flame 5 Exothermic 6 Bunsen Burner 7 Blue flame 8 Combustion Visible part of combustion Work flame Chemical reaction releasing energy Substance burned for energy Releases heat during reaction Objet use to heat Safe flame Produces soot and CO