Here's why:
* Oxidation is a chemical process involving the loss of electrons.
* When an element burns in oxygen, it reacts with oxygen atoms, losing electrons and forming a new compound.
* This new compound is formed by the combination of the element with oxygen, and is therefore classified as an oxide.
For example:
* Sodium (Na) burns in oxygen to form sodium oxide (Na2O).
* Carbon (C) burns in oxygen to form carbon dioxide (CO2).
* Iron (Fe) reacts with oxygen to form iron oxide (Fe2O3), commonly known as rust.
