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 MixturePure 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.
1. A mixture has variable combinations.
Eg: Alcohol-water mixture, both co-exist together.
2. A mixture can be either homogenous or heterogeneous