Chemistry C1 4.1 Fuels from crude oil.

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What is crude oil made up of?
A mixture of many different compounds.
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What can be used to separate mixtures of liquids?
Distillation.
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What are most of the compounds in crude oil?
Hydrocarbons, they contain only hydrogen and carbon.
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What are alkanes?
Saturated hydrocarbons, they contain as many hydrogen atoms as possible in their molecules.
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Why do the compounds in crude oil need to be separated to make useful fuels?
The many different compounds in crude oil boil at different temperatures, therefore burn under different conditions and so crude oil needs to be separated to make useful fuels.
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What are the liquids that are produced by distillation and boil within different temperature ranges called?
Fractions.
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What is the general formula of alkanes?
C(_n)H(2n+2). *look up how it actually looks written.
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What kind of hydrocarbons are alkanes?
Saturated hydrocarbons.
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What is a molecular formula?
A representation of a molecule that shows the number of each type of atom in each molecule e.g. C(_2)H(_6). *look up
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What is a displayed formula?
A representation of a molecule that shows how the atoms are bonded together. *look up
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What is the boiling point of a substance?
The temperature at which its liquid boils when heated and at which its gas condenses when cooled.
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What are fractions?
Liquids with different boiling ranges separated from a mixture of liquids (crude oil).
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How can you tell that the substance with the formula C(_5)H(_12) is an alkane?
It has the general formula C(_n)H(_2n+2), it is a saturated compound, it has only single carbon-carbon bonds.
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What is the molecular formula of butane?
C(_4)H(_10).
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**LOOK UP REPRESENTATIONS OF HYDROCARBON MOLECULES (MOLECULAR FORMULA AND DISPLAYED FORMULA)**
**
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Other cards in this set

Card 2

Front

What can be used to separate mixtures of liquids?

Back

Distillation.

Card 3

Front

What are most of the compounds in crude oil?

Back

Preview of the front of card 3

Card 4

Front

What are alkanes?

Back

Preview of the front of card 4

Card 5

Front

Why do the compounds in crude oil need to be separated to make useful fuels?

Back

Preview of the front of card 5
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