If you cooled air down enough what would happen, would it freeze/go solid or what else might happen?

Question: If you cooled air down enough what would happen, would it freeze/go solid or what else might happen?
- Keywords:
  experiment,
  freeze,
  solid
Asked by soggysheepy to Ravi on 21 Jun 2013.
- Ravi Kopparapu answered on 21 Jun 2013:
  
  The water in the air will ‘condense’ into liquid. Depending upon how much you are cooling, other gases may also condense.

Question: If you cooled air down enough what would happen, would it freeze/go solid or what else might happen?