A mixture is a material made up of two or more different chemical substances which are not chemically bonded.
Mixtures are generally classified as homogeneous and heterogeneous.
Homogeneous mixtures possess a uniform composition throughout while heterogeneous mixtures possess a non-uniform composition.
Example-
The solution of sugar and water is an example of a homogenous mixture.
When sugar is mixed with water, the crystals break down into smaller particles and these particles occupy the space between the water particles to make a homogenous mixture of sugar syrup.
The composition of this sugar solution is uniform in nature.