GCSE Edexcel Chemistry Simple and Fractional Distillation: 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.

condensed
 heated
 melted
 solidified
 stirred

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

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

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

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