Give reasons : Gases have lower density compared to that of solids or liquids.

Gases have the least density.

Give reasons : Gases exert pressure in all directions.

Compare densities of solids, liquids, and gases.

Liquids generally have lower density as compared to solids but you must have observed that ice floats on water. Find out/why.

Give reason : Inert gases do not formions.

Give reasons. Inert gases do not form compounds

Give reasons why? Noble gases have Zero electron affinity.

Give reason to explain why: Gases are so easily compressible whereas it is impossible to compress a solid or a liquid.

Gases expand much more than solids or liquids on heating. Why?

Give expressions of velocity of sound in solids and liquids.