Identify the solute and solvent in the following solutions:

(a) Salt and water

(b) Iodine and alcohol

(c) Air and water

Define:

(a) Solute

(b) Solvent

(c) Solution

(d) Saturated solution

(e) Unsaturated solution

(a) Define solubility.

(b) State two factors by which the solubility of a solute in a solvent can be increased.

Chlorination of water is done to :

1. kill germs
2. remove the suspended impurities
3. remove the dissolved impurities
4. none of the above