Name:___________________________
Class:_________
Date:___________
Test
Air and Water
35
1) State a chemical test for the presence of water and the result observed.
Test:
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[1]
Result:
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[1]
2) State a use of water in the home and in the industry.
Home
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Industry
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[2]
3) Complete the following table.
Pollutant
Source
Effect
Carbon monoxide
[2]
4) State two main ways to make water potable(safe to drink).
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[2]
5) Briefly explain how nitrogen and oxygen gas can be separated by fractional distillation.
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[4]
6) Write out the chemical equation for the reaction that occurs in the catalytic converter.
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[2]
7) List three common elements that are found in fertilisers and state how each element helps in
growth of the plant.
Element
How it helps the plant
[6]
8) Why are greenhouse gases important? Give two examples of greenhouse gases.
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[3]
9) State four global effects of climate change.
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[4]
10)
Name the following processes in the carbon cycle that
a) removes carbon dioxide from the air
…………………………..
b) adds carbon dioxide into the air naturally
i) ………………………..
ii) ………………………..
[3]
11) Two elements, the metal lead and the non-metal sulfur, are both found as pollutants in air.
a) What is the source of small amounts of lead present in the air?
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[1]
b) State the bad effect of lead on health.
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[1]
c) Explain why burning fossil fuels containing sulfur is harmful to the environment.
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[3]