Chemistry 1A - Products from Rocks: Environmental Problems

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Why do power stations burn fossil fuels?
To make electricity.
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What is the name of the process which involves burning fuels?
Combustion.
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What is the word equation for combustion?
Hydrocarbon + oxygen = carbon dioxide + water vapour
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What is released if a fuel is burnt that contains sulfur impurities?
Sulfur dioxide.
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When does complete combustion occur?
When there's plenty of oxygen.
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When does incomplete combustion occur?
When there's not enough oxygen.
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Sulfur Dioxide causes...?
Acid rain.
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Name three alternative fuels.
Ethanol, Biodiesel, Hydrogen Gas.
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Name one pro of Ethanol as an alternative fuel.
The CO2 released when it's burnt was taken in by the plant as it grew, so it's 'carbon neutral'.
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Name one con of Ethanol.
Engines need to be converted before they work with ethanol. It could increase food prices.
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Name one pro of Biodiesel.
It's carbon neutral, engines don't need to be converted, it produces less sulfur dioxide.
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Name one con of Biodiesel.
We can't make enough, it's expensive.
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Name one pro of Hydrogen Gas.
It's very clean.
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Name one con of Hydrogen Gas.
You need a special, expensive engine. Hydrogen isn't widely available. Hydrogen's hard to store.
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Other cards in this set

Card 2

Front

What is the name of the process which involves burning fuels?

Back

Combustion.

Card 3

Front

What is the word equation for combustion?

Back

Preview of the front of card 3

Card 4

Front

What is released if a fuel is burnt that contains sulfur impurities?

Back

Preview of the front of card 4

Card 5

Front

When does complete combustion occur?

Back

Preview of the front of card 5
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