Difference between Pure substance and Mixture

Matter is anything that has mass and that occupies space. Matter can be either a pure substance or a mixture.

Pure substance: Matter that has the same composition and properties throughout is called a substance.

Mixture: It is the combination of two or more pure substances where each substance retains its own identity.

 

Difference between Pure substance and Mixture

Pure substance

1. A pure substance has only one component

Eg: Pure water is a pure substance. It consist of only water molecules.

2. Elements and compounds are both pure substances. It is collection of dissimilar 
particles that will not undergo a chemical reaction.

Mixture:

1. A mixture has variable combinations.

Eg: Alcohol-water mixture, both co-exist together.

2. A mixture can be either homogenous or heterogeneous