Following are the various properties of air:It is a mixture of several gases such as nitrogen, oxygen, carbon dioxide, argon, helium, neon, etc.Air constitutes a lot of atoms and molecules which give it mass.Pressure is exerted by air conforming to its density at different altitudes and it also has weight.It is generally without any odour and colour. It can be felt but not seen.As it is a mixture of several gases, air also occupies space.It also expands when under high temperatures and as it expands, it takes up more space and subsequently gets thinner.