Question

If a substance reacts with oxygen, the chemical reaction is most likely a

Answer 1

Combustion

Step-by-step explanation:

Any combustion reaction needs as reagent
`O_(2)` to be able to happen.

By definition a combustion is a chemical reaction that occurs between oxygen (
`O_(2)`)and an oxidizable material, an energy release occurs and usually manifests itself by flame.

Answer 2

If a substance reacts with oxygen, the chemical reaction is most likely a combustion reaction. Combustion reactions always involve molecular oxygen O2. Anytime anything burns (in the usual sense), it is a combustion reaction. Hope this answers the question.