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This question is about the properties of hydrocarbons.

State the name of the hydrocarbon in the diagram below.

propane

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Draw the structure of butene.

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4 carbon atoms and 8 hydrogen atoms

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double bond between two carbon atoms

it doesn't matter which two carbon atoms have the double bond

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bond hydrogen to each carbon so that each carbon has a total of 4 covalent bonds

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Explain what is meant by the term saturated hydrocarbon.

'hydrocarbon' because it only contains hydrogen and carbon

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'saturated' because it has no double bonds

'saturated' because it has the maximum number of hydrogens per carbon

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This question is about the separation of crude oil, a mixture of different hydrocarbons.

State the name of the industrial process used to separate crude oil into fractions and outline the process.

Name of the process:

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fractional distillation

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Outline of the process:

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crude oil is heated/vapourised

fractionating column is cooler at the top than at the bottom

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fractions have different boiling points so condense at different heights

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Bitumen is a fraction that is removed near the base of the fractioning column.

State one use of bitumen.

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bitumen can be cracked into shorter chain hydrocarbons

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The table below shows the boiling points for the first 10 alkanes.

Plot a bar graph to show how the temperature varies with length of hydrocarbon.

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This question is about alkenes.

Complete the table below by giving the missing information about the alkene with the formula C₄H₈.

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correct name

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Butene is known as an unsaturated hydrocarbon.

Explain what is meant by the term unsaturated.

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ethanol

Hydrocarbons - exam practice

Hydrocarbons

Question 1 of 3

Hydrocarbons - exam practice

Hydrocarbons

Question 1 of 3