Define:

(a) Solid

(b) Liquid

(c) Gas

Give two examples of each type.

Write your observation and conclusion for the following:

(a) A few marbles are put in a glass half filled with water.

(b) Ice is kept at room temperature.

(a) Define interconversion of states of matter.

(b) Why do solids, liquids and gases differ in their physical state?

(c) Under what conditions do solids, liquids and gases change their state?

Name the processes marked as A, B, C, D, E, and F.