Define mixture and its types.

(N/A) mixture is a substance that contains two or more components (elements or compounds) mixed in any proportion.
Mixtures are classified into two types:
$(i)$ Homogeneous mixture: In this type,the components are completely mixed,and the composition is uniform throughout. Examples include $Sugar$ solution and air.
$(ii)$ Heterogeneous mixture: In this type,the composition is not uniform throughout,and the different components can often be observed separately. Examples include a mixture of salt and sugar,or grains and pulses with dirt particles.
The components of a mixture can be separated by physical methods such as hand-picking,filtration,crystallization,and distillation.