Question

Air is a mixture of many gases

Answer 1

Anwer

The following facts prove that air is a mixture

1.The composition of air is not constant; it varies from place to place ,from time to time .If the air is not compound, it would always have a definite composition by weight.

2. The different components of air retain their identity.

3.The properties of air represent the average of the properties of the component gases

4. The components of air can be readily separated by simple physical method