Question #b68a8

2 Answers
Sep 24, 2015

Mixture: two or more substances.


In the classification of matters, we can distinguish two groups:
Mixture and pure substance.

A mixture is formed when two or more pure substances are mixed together.

For example:
Water is a pure substance. Sodium chloride #NaCl# is a pure substance.

When #NaCl# is dissolved in water the form a homogeneous mixture . We say homogeneous mixture because we can see only one phase.

Water and sand form another mixture which is called heterogeneous mixture . We say Heterogeneous because we can see two distinct phase the water and sand.

enter image source here

Image Source: **

Sep 25, 2015

Substances have a fixed composition; mixtures have a variable composition.


This question has already been answered.

Check out this answer.