Learning objective

Identify the origins of various air pollutants, including: (a) carbon dioxide from burning carbon-based fuels completely (b) carbon monoxide and particulates from burning carbon-based fuels incompletely (c) methane from decaying plants and animal digestion waste (d) nitrogen oxides from vehicle engines (e) sulfur dioxide from burning fossil fuels containing sulfur compounds.

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Exam focus

Cambridge IGCSE Combined Scienceof the environmentCore content

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Quick explanation

This point belongs to Air quality and climate, especially Air quality and climate outcomes.
You need to be able to identify the origins of various air pollutants, including: (a) carbon dioxide from burning carbon-based fuels completely (b) carbon monoxide and particulates from burning carbon-based fuels incompletely (c) methane from decaying plants and animal digestion waste (d) nitrogen oxides from vehicle engines (e) sulfur dioxide from burning fossil fuels containing sulfur compounds.
The key ideas to know are State.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Air quality and climate outcomes to exam-style questions, flashcards, and revision notes for Air quality and climate.

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Practice Questions7 linked questions

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Paper 3Theory (Core)3 marks

Description

Various air pollutants originate from different sources, including combustion processes and biological decay.

a
Identify List the sources of the following air pollutants: carbon dioxide, carbon monoxide, methane, nitrogen oxides, and sulfur dioxide.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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