Composition of Air

Air

Has mass and occupies space

Clean air

Does not have colour or smell

Nitrogen content in the air

78%

Oxygen content in the air

21%

Carbon dioxide content in the air

0.03%

Inert gases content in the air

0.97%

Example of inert gases

Helium, argon, neon, xenon and krypton

Classification of air

Air is classified as mixture

The way air can be separated

Fractional distillation is used to separate the components of air

Importance of oxygen gases

Respiration, combustion of rocket engine and preparation of various compounds