what is needed for combustion? I have this experiment NH4NO3 reacts to form (with chlorine as catalyst) N2O and water the experiment is called oxidation of zinc, so another equation is Zn and NH4NO3 react to form ZnO and water. Anyways, the result is a blue flame and smoke Combustion is the production of heat and light when something reacts with oxygen. I know that all combustion reactions are automatically oxidation reduction reactions. But how do i determine if oxygen is being used in this reaction to fuel the flame. Basically, is theis a redox and combustion reaction.