Compounds Vs Mixtures

Compounds	Mixtures
In a compound, two or more elements are combined chemically.	In a mixture, two or more elements or compounds just mix together.
These contain two or more elements in a fixed ratio by mass. Its composition is always fixed.	The components of a mixture may be present in any ratio. Its composition is variable.
These have a definite formula.	These do not always have a definite formula.
These are always homogeneous i.e., have the same composition throughout.	These may be homogeneous or heterogeneous.
A chemical reaction takes place and therefore, the formation of a compound takes place with absorption or evolution of energy.	No chemical reaction takes place and therefore, the formation of mixture is not accompanied by any energy change.
The properties of a compound are entirely different from those of its constituents.	These show the properties of its constituents.
These cannot be separated into their constituents by ordinary physical methods. These can be separated by chemical or electrochemical reactions.	These can be separated into its constituents by physical methods (like filtration, evaporation, distillation, sublimation, mechanical separation etc).
These have fixed melting point, boiling point, etc.	These do not have a fixed melting point, boiling point etc.