DEMO ~TOPIC 06-AIR COMBUSTION, RUSTING AND FIRE FIGHTING

AIR COMBUSTION, RUSTING AND FIRE FIGHTING

AIR

This is a homogeneous colorless mixture of different gases in the atmosphere.

Composition of gases in air

The gases include: oxygen, nitrogen, carbon dioxide, and noble gas. Air contains water vapor and dust particles. However, they are not usually considered part of air.

The table below shows the percentage composition of gases.

Gas	% composition
Nitrogen	78%
Oxygen	21%
Noble gases	0.94%
Carbon dioxide	0.03%
Water vapor	0-4%

NB:The percentage composition of water vapor is generally caused by; •Weather

•Geographical location

Test for gases in air.

-It is possible to test for the presence of some of the gases that are found in air.

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DEMO ~TOPIC 06-AIR COMBUSTION, RUSTING AND FIRE FIGHTING

AIR

Composition of gases in air

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