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7.1 Carbon compounds as fuels and feedstock

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Question 1
F

The figure shows a model of a molecule found in crude oil.

Figure: A model of a molecule found in crude oil

A molecule model showing four carbon atoms in a chain and ten hydrogen atoms, with single bonds throughout.

a.

Write the molecular formula of the molecule shown in the figure.

[1]
b.

Name the molecule shown in the figure.

[1]
c.

The molecule shown in the figure is an alkane. Use the general formula CnH2n+2\text{C}_n\text{H}_{2n+2}Cn​H2n+2​ to show that this molecule is an alkane.

[1]
d.

Crude oil is a mixture. Give one reason why crude oil is described as a mixture.

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Markscheme

7.1 Carbon compounds as fuels and feedstock Questions

  1. GCSE
  2. /Chemistry
  3. /7.1 Carbon compounds as fuels and feedstock

91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.

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