If it's a Hydrocarbon, Combustion. Otherwise it's Oxidation
The reaction that occurs when a substance combines with oxygen and releases energy is called combustion. This process typically involves the rapid oxidation of a material, producing heat and light energy as byproducts.
It is an oxidation-reduction reaction called rusting.
Hemoglobin combines readily with oxygen.
Oxidation
oxides
oxyhemoglobin
When oxygen combines with another substance, it is called oxidation. Oxidation is a chemical reaction that involves the loss of electrons by a substance, resulting in the formation of an oxide.
The chemical reaction in which an element like iron combines with oxygen to form an oxide is called oxidation.
It is the very unstable gas called ozone.
When C02 is released from a campfire, it is called a carbon emission.
It combines with oxygen. Rust is also called oxidation.
The oxidation reaction is called combustion : the material may burn or explode.