Which form of solid is less dense than when it is in the liquid form.

When a substance dissolve in a liquid, if forms a

In solids, strong forces hold the particles in a ________ structure.

The forces of attraction between the particles is least in.

Impure water forms ice that melts at a temperature below ________ and boils at a temperature above

a. If you put a drop of ink in a beaker of water the ink spreads out through the water and colours it.
b. The gases escaping from food cooking in the kitchen can move to other rooms in the home.
What is the process taking place in above two cases?