Explain the following giving examples.
(a) saturated solution
(b) pure substance
(a) Saturated Solution - A solution in which no more solute can be dissolved without raising temperature is called saturated solution.
For example, 36g of salt in 100g of water.
(b) Pure substance - The substances that are made up of only one type of particles are called pure substances. For example-Salt, Oxygen, Water.
Molecular representation of Oxygen
(c) Colloid - A colloid is a heterogeneous mixture in which the size of solute particles lies between the size of particles of a solution and suspension and which shows tyndall effect. For example- Milk, Blood
Illustration of a Colloid
(d) Suspension - It is a heterogeneous mixture of small particles of solid in liquid. These particles do not dissolve in the liquid and are visible by the naked eye.