Question

Explain the following giving examples.
$\left(a\right)$ Saturated solution
$\left(b\right)$ Pure substance
$\left(c\right)$ Colloid
$\left(d\right)$ Suspension

Answer 1

(a) The term saturated solution is used in chemistry to define a solution in which no more solvent can be dissolved. It is understood that saturation of the solution has been achieved when any additional substance that is added results in a solid precipitate.

Example: Saltwater

(b) Pure substance: A material that is composed of only one type of particle.

Example: Gold, oxygen and water

(c) Colloid: A homogeneous non-crystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance.

Example: Gels, sols and emulsions

d) Suspension: A suspension is a heterogeneous mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction. We apply the word suspension when particles are big enough to eventually settle.

Example: Wheat flour and water, muddy water