What are the differences between mixtures and compounds?

A pure, homogenous substance which can be decomposed, through proper methods, in simple  elements is called compound.

 A compound could not be decomposed in its elements, using physichal or mechanical techniques.

A homogenous or heterogeneous substance, which is containing two or more elements or compounds that are in close contact and are combined in any proportion, is called mixture . Unlike the compound,the  mixture components  can be separated using physical methods, which could be evaporation, filtration, sublimation and magnetic separation.

The melting and boiling point are not definite in mixtures, while compounds have melting and boiling point fixed.

The properties of a compound are totally different from its components, while the properties of mixture components are remaining unchanged.