Making crude oil useful

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  • Created by: ryan
  • Created on: 14-01-13 17:49
What is crude oil?
Crude oil is a mixture of many hydrocarbons.
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What are fossil fuels?
Fossil Fuels are finite resources because they are no longer being made or are being made extremely slowly. they are non-renewable resources as they are being used up faster than they are being formed.
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How can Crude oil be separated?
Crude oil can be separated by fractional distillation. It is heated near the bottom of a fractionating column. Fractions with low boiling points 'exit' at the top. Fractions with high boiling points 'exit' at the bottom.
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What links between the top and bottom of a fractionating column?
There is a temperature gradient between the bottom and the top of the column.
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What does cracking do?
Cracking helps an oil refinery match its supply of useful products such as petrol with the demand for them. Cracking converts large alkane molecules into smaller alkane and alkene molecules.
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Why do Hydrocarbons with bigger molecules have high boiling points?
Hydrocarbons with bigger molecules have stronger intermolecular forces between their molecules, and so therefore have higher boiling points than hydrocarbons with smaller molecules.
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Other cards in this set

Card 2

Front

What are fossil fuels?

Back

Fossil Fuels are finite resources because they are no longer being made or are being made extremely slowly. they are non-renewable resources as they are being used up faster than they are being formed.

Card 3

Front

How can Crude oil be separated?

Back

Preview of the front of card 3

Card 4

Front

What links between the top and bottom of a fractionating column?

Back

Preview of the front of card 4

Card 5

Front

What does cracking do?

Back

Preview of the front of card 5
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