Difference Between Mixture and Compound

Mixture	Compound
1. Nature: In a mixture, two or more elements or compounds are mixed, such that they do not combine chemically	1. Nature: In a compound, two or more elements unite chemically.
2. Structure: The mixture does not have a definite structure.	2. Structure: Compounds have a definite structure.
3. Composition: In the case of a mixture, their constituents can be present in any ratio, i.e., they have variable composition.	3. Compositions: In the case of a compound, the constituents are present in a fixed ratio by weight.
4. Properties: The constituents of a mixture retain their individual physical and chemical properties.	4. Properties: The properties of a compound are entirely different from the properties of its constituents.
5. Separation of constituents: The constituents of a mixture can be separated by physical means.	5. Separation of constituents: The constituents of a compound cannot be separated by physical means.
6. Energy changes: During the formation of mixtures, no energy changes take place, i.e., it is a result of physical change.	6. Energy changes: During the formation of a compound energy is either absorbed or released, i.e., compound is the result of a chemical change.

Atoms and Molecules Class 9 NCERT