Question

how can you say oxygen is a gas​

Answer 1

Answer:

A gas is not liquid, or a solid. Gas is air because it is air particles. This is why Air is a Gas.

Explanation:

Answer 2

Answer:

Oxygen is an element that can be a solid, liquid or gas depending on its temperature and pressure. In the atmosphere it is found as a gas, more specifically, a diatomic gas. This means that two oxygen atoms are connected together in a covalent double bond.