(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.

Give reasons:

When a stone is dipped in a glass containing some water, the level of water rises but when a spoon of sugar is added to it and stirred, the water level does not rise?

Sapna was making an orange flavoured drink. She poured 3-4 teaspoons of concentrated orange juice into a glass. She then added water until the glass was full and stirred it slowly.

(a) Explain how the orange juice spread into water.

(b) What is the effect of stirring?

(c) What is this intermixing of particles called? Name the type of substances which show this phenomenon the fastest.

(d) "There is no more movement in the liquid in the glass once the orange colour of the juice has stopped spreading."

Is this statement correct? Justify your answer.