Explanation:
Mixtures are the substances that contain two or more atoms mixed together in different composition.
There are two main classes of mixtures which are as follows.
Homogeneous mixtures - These are the mixtures in which solute particles are uniformly distributed into the solvent.
For example, NaCl when dissolved in water forms a homogeneous solution.
Heterogeneous mixture - These are the mixtures in which solute particles are non-uniformly distributed into the solvent.
For example, sand mixed in water is a  heterogeneous solution.
