7.1 Composition of Air

► Air is a mixture of different gases that cannot be seen and is found in the atmosphere.

Composition of Air

💥 Activity 7.1: To determine the percentage of oxygen of  air.

Is Air a Mixture
■ Air is a mixture and not a compound.

The Importance of Gases
■ Gases in the air play an important role in our life.
■ Oxygen

■ Carbon dioxide

■ Nitrogen

■ Inert gases - argon, neon, helium, krypton, xenon and radon

The Carbon Cycle

►	The carbon cycle is the cycle that involves the intake, consumption and release of carbon continuously into the atmosphere.

The Oxygen Cycle

►	The carbon cycle is the cycle that involves the intake, consumption and release of oxygen continuously into the atmosphere.

Ways to Prevent Interruptions in the Oxygen and Carbon Cycles

■ Ways to prevent interruptions in the oxygen and carbon cycles include:

	►	Prohibition of illegal logging
	►	Banning of forest burning and open burning

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Preventing and conservation of forest fires

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Replanting trees

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Preventing harmful exhaust gas from vehicles

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Substitution of short distance travel by foot or bicycle instead of motorised vehicles to reduce the emission of carbon dioxide

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Efficient usage of energy or even better usage renewable energy to replace fossil fuels.