Oxides of Nitrogen

Internal combustion engines burn fossil fuels.

Explain how nitrogen in the air contributes to the formation of atmospheric pollutants, and describe the risks they pose to health and the environment.

[6 marks]

• Which gases react? (1 mark)

  • Oxygen and nitrogen

  • In air / car engine (NOT in the fuel)

  (1 mark)

• Under what conditions? (1 mark)

  HIGH TEMPERATURE

  when fuel is burnt.

  (1 mark)

• What is the pollutant formed? (1 mark)

  Nitrogen oxides

  (1 mark)

• What environmental effects? (1 mark)

  Acid rain

  (1 mark)

• Another environmental effect? (1 mark)

  Photochemical smog

  (1 mark)

• What health effects? (1 mark)

  • asthma attacks/ worsens asthma

  • respiratory issues

  (1 mark) for either

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