properties of matter

(a) Arrange solids, liquids and gases in increasing order of the following properties of matter rigidity (ii) diffusion (iii) compressibility. (b) Write one example from your daily life which is based on diffusion of gases.

A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

The property of matter by virtue of which it does not regain its original shape and size after the removal of deforming force is called