Can air exist in the solid liquid and gaseous state?

Answer 1

Air is a mixture of gases including ozone, oxygen, hydrogen, methane, nitrogen, helium, and a whole bunch of other things you wouldn't want to breathe. Because of the differences in their chemical makeups, it would be near impossible if not impractical to attempt to freeze or melt them. For example, nitrogen turns to a liquid at extremely frigid temperatures, but for it to become a solid the temperature would need to be near absolute zero, and the pressure extremely low.

At one given temperature and pressure you could have oxygen as a gas, and nitrogen and hydrogen would probably react. At extremely low temperatures and pressure nitrogen and hydrogen react to create ammonia, and because nitrogen is the main composer of the atmosphere, air wouldn't be air without it.

So to answer it (finally) you cannot have air (in its totality) as a solid or liquid, though they can each become those states individually.

Answer 2

Air is a mixture of gases primarily composed of nitrogen, oxygen, and trace amounts of other elements. At normal atmospheric conditions, air exists as a gas. However, under extreme conditions such as extremely low temperatures or high pressures, air can be compressed into a liquid form. It cannot exist as a solid under normal conditions.