Chemistry

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How much of the atmosphere contains nitrogen
78%
1 of 20
How much of the atmosphere contains oxygen
21%
2 of 20
Why doesn't a can crush when all the drink is finished
It is not true empty space (still contains gases including nitrogen and oxygen)
3 of 20
What does sulphur dioxide and nitrogen dioxide produce
Acid rain
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What are the affects of acid rain
Damages buildings, plants and trees. Breathing problems and causes asthma to worsen
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What are the dangers of particulates
The make surfaces dirty. Can cause lung infections and makes asthma worse
6 of 20
What is the word equation for combustion
Methane + oxygen = carbon dioxide + water
7 of 20
What is the word equation for incomplete combustion
Methane + oxygen = carbon + water
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Name the three parts to a fire triangle
Source of heat, oxygen and fuel
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Where do all the atoms go during combustion
They are realised into the atmosphere
10 of 20
What does reduced mean
Oxygen is removed
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What does oxidised mean
Oxygen is added
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Why are these reactions good (oxidised and reduced)
The pollutants are changed into gases that naturally occur in our atmosphere
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What is the piece of equipment that does this reaction
Catalytic converter
14 of 20
Where is the wet scrubbing method used and why
In power stations to rid of waste gases
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What does it do
It converts waste gases into calcium sulphate using lime and water
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Why does this work
Sulphur dioxide is an acid gas so the lime neutralises it
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Another method?
Electrostatic precipitation
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Name two fuels that have sulphur removed from them before they are burnt
Oil and gas
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Three ways of lowering pollution
Catalytic converter, public transport, aerodynamic cars,
20 of 20

Other cards in this set

Card 2

Front

How much of the atmosphere contains oxygen

Back

21%

Card 3

Front

Why doesn't a can crush when all the drink is finished

Back

Preview of the front of card 3

Card 4

Front

What does sulphur dioxide and nitrogen dioxide produce

Back

Preview of the front of card 4

Card 5

Front

What are the affects of acid rain

Back

Preview of the front of card 5
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