Chemistry C1 4.4 Cleaner fuels.

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What do many scientists believe that carbon dioxide from burning fuels causes?
Global warming.
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What is acid rain caused by?
Sulfur dioxide and nitrogen oxides.
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What causes global dimming?
Particulates.
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What can be removed from waste gases after fuel is burned?
Pollutants.
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Sulphur can be removed from fuels before they are burned, what is the purpose of this?
So less sulfur dioxide is given off.
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What happens due to burning large amounts of fuels?
This releases substances that spread throughout the atmosphere and affect the environment.
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What does burning any fuel that contains carbon produce?
Carbon dioxide.
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What is carbon dioxide?
A greenhouse gas that many scientists believe is the cause of global warming.
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What does incomplete combustion of fuels produce?
The poisonous gas carbon monoxide, it can also produce tiny solid particulates that reflect sunlight and so cause global dimming.
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What produces sulfur dioxide and nitrogen oxides?
Burning fuels.
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What happens to the suffer dioxide and nitrogen oxides produced by burning fuels?
These gases dissolve in water droplets and react with oxygen in the air to produce acid rain.
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How can we remove harmful substances from waste gases before they are released into the atmosphere?
Sulfur dioxide is removed from waste gases from power stations. Exhaust systems of cars are fitted with catalytic converters to remove carbon monoxide and nitrogen oxides. Filters can remove particulates.
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What is the product of incomplete combustion that scientist believe causes global dimming?
Particulates.
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What can be removed from fuels before they are supplied to users so that less sulfur dioxide is produced when the fuel is burned?
Sulfur.
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What two methods are used to reduce the amount of sulfur dioxide produced by burning fuels?
Remove sulfur dioxide from waste gases after the fuel has been burned, remove sulfur from fuels before they are burned.
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Other cards in this set

Card 2

Front

What is acid rain caused by?

Back

Sulfur dioxide and nitrogen oxides.

Card 3

Front

What causes global dimming?

Back

Preview of the front of card 3

Card 4

Front

What can be removed from waste gases after fuel is burned?

Back

Preview of the front of card 4

Card 5

Front

Sulphur can be removed from fuels before they are burned, what is the purpose of this?

Back

Preview of the front of card 5
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