what are homogeneous and heterogeneous mixture

Homogeneous mixture - A mixture having a uniform composition throughout its mass is known as homogeneous mixture. It doesnot contain physically distinct parts. Homogeneous mixtures form solutions.Example: A mixture of alcohol and water is homogeneous.

Heterogeneous mixture - A mixture having non- uniform composition is known as heterogeneous. It contains physically distinct parts. Heterogeneous mixtures form colloids or suspensions. Example: A mixture of sodium chloride and sand is heterogeneous.