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9.1 The composition and evolution of the Earth's atmosphere

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Question 19
H

Coal and crude oil were both formed from the remains of organisms. Which statement describes how each of them was formed?

[1]
A

Coal from plant deposits on land, crude oil from plankton in the sea

B

Coal from plankton in the sea, crude oil from plant deposits on land

C

Coal from plant deposits on land, crude oil from shells on the sea bed

D

Coal from shells on the sea bed, crude oil from plankton in the sea

Markscheme

9.1 The composition and evolution of the Earth's atmosphere Questions

  1. GCSE
  2. /Chemistry
  3. /9.1 The composition and evolution of the Earth's atmosphere

40 exam-style questions on AQA GCSE Chemistry 9.1 The composition and evolution of the Earth's atmosphere, covering 9.1.1 The proportions of different gases in the atmosphere, 9.1.2 The Earth's early atmosphere, 9.1.3 How oxygen increased, and 9.1.4 How carbon dioxide decreased. Each one has a worked solution and a mark scheme showing where the marks go.

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