Chemistry GCSE - The Atmosphere, Water purity

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How much nitrogen and oxygen is in the air?
78% is nitrogen and 21% is oxygen!
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Other gases in our atmosphere include....
Argon and Carbon Dioxide.
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How can you separate oxygen and nitrogen?
You liquefy the air and then Fractional distillation of air can be used.
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How can you measure the amount of oxygen in the air?
Gas syringes and by passing a known volume of air over hot copper and measuring the decrease in volume.
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How can you test water purity?
By evaporating the water in an evaporating dish or by measuring the waters boiling point.
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How do you purify water?
Filtration, Sedimentation, Chlorination....
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Name three types of water pollutants....
Nitrate fertilisers, lead pipes, pesticides.
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Other cards in this set

Card 2

Front

Other gases in our atmosphere include....

Back

Argon and Carbon Dioxide.

Card 3

Front

How can you separate oxygen and nitrogen?

Back

Preview of the front of card 3

Card 4

Front

How can you measure the amount of oxygen in the air?

Back

Preview of the front of card 4

Card 5

Front

How can you test water purity?

Back

Preview of the front of card 5
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