Hard Water is
It is a colloid.
(a) What is meant by a solution ? Give two examples of solutions.
(b) What is suspension ? Give two examples of suspensions.
(c) What is a colloid ? Give two examples of colloids (or colloidal solutions).
Explain the following giving examples:
(a) Saturated solution
(b) Pure substance
(c) Colloid
(d) Suspension