Is air a liquid or a gas or solid?

Answer 1

Yes it certainly is. Above -321 F, air is gas. Below -321, air is liquid. At even lower

temperatures, the various gases in air become solid. For example, oxygen solidifies

below about 54 Kelvins.

Answer 2

Air is a mixture of gases, primarily nitrogen (78%) and oxygen (21%), along with small amounts of other gases such as carbon dioxide, argon, and water vapor. It is not a liquid or a solid, but a combination of gases that we commonly refer to as a gas.