How do you differentiate between pure substances and mixtures?

1 Answer
Apr 17, 2017

Answer:

Well, pure substances have constant physical properties..............

Explanation:

And physical properties include melting point, and boiling point.

Melting point is an extremely useful physical property. And usually knowledge of melting point of an unknown organic compound, and a few of its crystalline derivatives allows conclusive identification of the unknown compound.

On the other hand, mixtures have non-definite melting points, and occur over a range..........