GCSE Edexcel Chemistry Saturated Hydrocarbons: Crude oil is found in the Earth'

Question

Crude oil is found in the Earth's crust.

(a) Which of the statements about crude oil is correct?

- A crude oil is a finite resource
- B crude oil is a mixture of the elements hydrogen and carbon
- C all of the molecules in crude oil contain rings of carbon atoms
- D crude oil is used in cars as a fuel

(b) The substances ethane, C₂H₆, octane, C₈H₁₈ and pentadecane, C₁₅H₃₂, are all found in crude oil.

These substances

- A have the same formula
- B have the same boiling point
- C are in the same homologous series
- D form different products when completely combusted in air

(c) (i) Use a word from the box to complete each of the sentences about the fractional distillation of crude oil.

Each word may be used once, more than once, or not at all.

- condensed
- heated
- melted
- solidified
- stirred

The separation of crude oil into fractions occurs in a fractional distillation column.

Before crude oil is passed into the column it is ____________________.

During the distillation, vapour rises up the column until it is cold enough for the vapour to form a liquid. The vapour has been ____________________.

Crude oil is found in the Earth's crust - Edexcel - GCSE Chemistry - Question 5 - 2018 - Paper 1

Worked Solution & Example Answer:Crude oil is found in the Earth's crust - Edexcel - GCSE Chemistry - Question 5 - 2018 - Paper 1

Which of the statements about crude oil is correct?

These substances

(i) Use a word from the box to complete each of the sentences about the fractional distillation of crude oil.

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