can air be frozen? if so, what is it called? water vapor?
Yes, air can be frozen...you just have to cool it sufficiently. For instance, at liquid helium temperatures (~ 4K), I know that air solidifies. In fact, as you cool below the freezing point of each of its components (nitrogen, oxygen, carbon dioxide), you freeze that component.
It's not called water vapor. How would it make sense to refer to a solid as a vapor ? And water is hardly the dominant component of air. I'm not sure there's a specific name for it, but we simply call it frozen or solid air.
What will happen after air is solidified? Solid N, O, CO2, strange....
Separate names with a comma.