Question

Components of air and their uses.
Answer the following questions:
1) Explain air as a mixture of gases.
2) Write four main components of air with five uses of each component.

Answer 1

Answer:

air is a mixed component wich has a several number of gases mixed with each other. eg -carbondioxide, oxygen etc

Answer 2

Components of air:

Nitrogen

Oxygen

carbon dioxide

water vapour

USES:

Nitrogen Composition of Air 78% Carbon Dioxide, Water Oxygen Vapour and 21% other Gases 1%

2. Oxygen • makes up 21% of the air. • it is essential to for most living things. • plants and animals take in oxygen during the process of respiration. • not only can it be found in air, it is also found in water and soil. • is needed for burning.

3. Respiration The process when living things take in oxygen in order to break down digested food to produce energy. Oxygen Digested Energy + Food Carbon dioxide

4. Nitrogen • makes up 78% of the air. • is not used by most living things except for – • nitrogen-fixing bacteria in the soil • the roots of some plants to use it to form nitrates, e.g. peanuts • absorbed by plant as nitrates to make plant protein.

5. Carbon dioxide • is essential to green plants for the process of photosynthesis. • is combined together with water and the energy from the sunlight, to make food or simple sugars. Oxygen is produced in the process.

6. Water Vapour • plays an important part in the water cycle. • helps to form the clouds in the sky. • returns to the Earth in the form of rain, snow, hale or sleet.

7. Rare Gases • includes argon, helium, neon, krypton and xenon. • are inert, meaning they do not take part in reactions under normal circumstances.