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Carbon dioxide and methane as greenhouse gases: AQA GCSE Combined Science questions

Every AQA GCSE Combined Science exam question on 5.9.2 Carbon dioxide and methane as greenhouse gases, 2018–2025, with its mark scheme and examiner’s report.

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3,069 questions

  1. Q02.3

    June 2025 · Chemistry Paper 2 Higher

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2025 Chemistry Paper 2 Higher, question 02.3: Methane is a greenhouse gas. Give two ways to reduce methane emissions into the atmosphere. [2 marks] 1 2

  2. Q04.8

    June 2025 · Chemistry Paper 2 Higher

    2 marks5.6.1 Rate of reaction5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2025 Chemistry Paper 2 Higher, question 04.8: The catalyst allows the reaction to take place at a lower temperature. Explain one advantage of using a lower temperature in the production of methanol. Do not

  3. Q03.6

    June 2025 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2025 Chemistry Paper 2 Foundation, question 03.6: Carbon dioxide is a greenhouse gas. An increase in greenhouse gases in the atmosphere has led to an increase in average global temperature. The increase in aver

  4. Q06.3

    June 2025 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2025 Chemistry Paper 2 Foundation, question 06.3: Methane is a greenhouse gas. Give two ways to reduce methane emissions into the atmosphere. [2 marks] 1 2

  5. Q01.3

    June 2024 · Chemistry Paper 2 Foundation

    3 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2024 Chemistry Paper 2 Foundation, question 01.3: Figure 1 shows the change in the percentage of carbon dioxide in the Earth’s atmosphere from 1800 to 2020. Figure 1 Describe the trend in the percentage of carb

  6. Q01.4

    June 2024 · Chemistry Paper 2 Foundation

    1 mark5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2024 Chemistry Paper 2 Foundation, question 01.4: Which of the following is also a greenhouse gas? [1 mark] Tick () one box. Argon Methane Nitrogen Oxygen

  7. Q01.5

    June 2024 · Chemistry Paper 2 Foundation

    1 mark5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2024 Chemistry Paper 2 Foundation, question 01.5: Which of the following is an environmental problem caused by greenhouse gases? [1 mark] Tick () one box. Acid rain Climate change Global dimming

  8. Q01.6

    June 2024 · Chemistry Paper 2 Foundation

    2 marks5.3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2024 Chemistry Paper 2 Foundation, question 01.6: Calculate the relative formula mass (Mr) of carbon dioxide (CO2). Relative atomic masses (Ar): C = 12 O = 16 [2 marks] Relative formula mass of carbon dioxide =

  9. Q04.3

    June 2023 · Chemistry Paper 2 Higher

    2 marks5.8.1 Purity, formulations and chromatography5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Higher, question 04.3: The student concludes that distilled water is pure. Describe a test to confirm that distilled water is pure. [2 marks] Test Result Tap water is potable.

  10. Q05.1

    June 2023 · Chemistry Paper 2 Higher

    1 mark5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Higher, question 05.1: Give one effect of global climate change. [1 mark]

  11. Q05.2

    June 2023 · Chemistry Paper 2 Higher

    4 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Higher, question 05.2: Explain how greenhouse gases cause global warming. [4 marks]

  12. Q02.4

    June 2023 · Chemistry Paper 2 Foundation

    1 mark5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Foundation, question 02.4: Figure 1 shows the concentration of carbon dioxide in the Earth’s atmosphere from 1960 to 2020. Figure 1 How has the concentration of carbon dioxide in the Eart

  13. Q02.5

    June 2023 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Foundation, question 02.5: Cars emit carbon dioxide. A car emits 17.2 kg of carbon dioxide on a journey. There are four people in the car. Calculate the mass of carbon dioxide emitted per

  14. Q02.7

    June 2023 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Foundation, question 02.7: Figure 2 shows the annual change in forest area in four different parts of the world. Figure 2 Give two conclusions about the annual change in forest area. [2 m

  15. Q02.8

    June 2023 · Chemistry Paper 2 Foundation

    1 mark5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    June 2023 Chemistry Paper 2 Foundation, question 02.8: Methane is a greenhouse gas. Figure 3 shows sources of methane emissions. Figure 3 Determine the percentage (%) of methane emissions from landfill. [1 mark] Per

  16. Q04.5

    June 2022 · Chemistry Paper 2 Higher

    6 marks5.9.2 Carbon dioxide and methane as greenhouse gases5.10.1 Using the Earth's resources and obtaining potable water
    The whole paper ↗
    June 2022 Chemistry Paper 2 Higher, question 04.5: Window frames can be manufactured from wood or from plastic. Table 2 shows data from a life cycle assessment (LCA) for a wooden window frame and a plastic windo

  17. Q05.6

    November 2021 · Chemistry Paper 2 Higher

    3 marks5.9.2 Carbon dioxide and methane as greenhouse gases5.10.2 Life cycle assessment and recycling
    The whole paper ↗
    November 2021 Chemistry Paper 2 Higher, question 05.6: Emissions from cars contain carbon dioxide. Explain why carbon dioxide emissions during use and operation are not the total carbon footprint for a car. Refer to

  18. Q03.1

    November 2021 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    November 2021 Chemistry Paper 2 Foundation, question 03.1: An increase in global temperature is a major cause of climate change. Give two effects of global climate change. [2 marks] 1 2

  19. Q03.2

    November 2021 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    November 2021 Chemistry Paper 2 Foundation, question 03.2: Describe the trend in the percentage of carbon dioxide in the Earth’s atmosphere from 1750 to 2000. Use Figure 3. [2 marks]

  20. Q03.3

    November 2021 · Chemistry Paper 2 Foundation

    2 marks5.9.2 Carbon dioxide and methane as greenhouse gases
    The whole paper ↗
    November 2021 Chemistry Paper 2 Foundation, question 03.3: Determine the change in the percentage of carbon dioxide in the Earth’s atmosphere from 1950 to 2000. Use Figure 3. [2 marks] Percentage of carbon dioxide in 19
All 36 questions on Carbon dioxide and methane as greenhouse gases, as a list
  1. June 2025, Chemistry Paper 2 Higher, Q02.3 (2 marks): Methane is a greenhouse gas. Give two ways to reduce methane emissions into the atmosphere. [2 marks] 1 2
  2. June 2025, Chemistry Paper 2 Higher, Q04.8 (2 marks): The catalyst allows the reaction to take place at a lower temperature. Explain one advantage of using a lower temperature in the production of methanol. Do not
  3. June 2025, Chemistry Paper 2 Foundation, Q03.6 (2 marks): Carbon dioxide is a greenhouse gas. An increase in greenhouse gases in the atmosphere has led to an increase in average global temperature. The increase in aver
  4. June 2025, Chemistry Paper 2 Foundation, Q06.3 (2 marks): Methane is a greenhouse gas. Give two ways to reduce methane emissions into the atmosphere. [2 marks] 1 2
  5. June 2024, Chemistry Paper 2 Foundation, Q01.3 (3 marks): Figure 1 shows the change in the percentage of carbon dioxide in the Earth’s atmosphere from 1800 to 2020. Figure 1 Describe the trend in the percentage of carb
  6. June 2024, Chemistry Paper 2 Foundation, Q01.4 (1 mark): Which of the following is also a greenhouse gas? [1 mark] Tick () one box. Argon Methane Nitrogen Oxygen
  7. June 2024, Chemistry Paper 2 Foundation, Q01.5 (1 mark): Which of the following is an environmental problem caused by greenhouse gases? [1 mark] Tick () one box. Acid rain Climate change Global dimming
  8. June 2024, Chemistry Paper 2 Foundation, Q01.6 (2 marks): Calculate the relative formula mass (Mr) of carbon dioxide (CO2). Relative atomic masses (Ar): C = 12 O = 16 [2 marks] Relative formula mass of carbon dioxide =
  9. June 2023, Chemistry Paper 2 Higher, Q04.3 (2 marks): The student concludes that distilled water is pure. Describe a test to confirm that distilled water is pure. [2 marks] Test Result Tap water is potable.
  10. June 2023, Chemistry Paper 2 Higher, Q05.1 (1 mark): Give one effect of global climate change. [1 mark]
  11. June 2023, Chemistry Paper 2 Higher, Q05.2 (4 marks): Explain how greenhouse gases cause global warming. [4 marks]
  12. June 2023, Chemistry Paper 2 Foundation, Q02.4 (1 mark): Figure 1 shows the concentration of carbon dioxide in the Earth’s atmosphere from 1960 to 2020. Figure 1 How has the concentration of carbon dioxide in the Eart
  13. June 2023, Chemistry Paper 2 Foundation, Q02.5 (2 marks): Cars emit carbon dioxide. A car emits 17.2 kg of carbon dioxide on a journey. There are four people in the car. Calculate the mass of carbon dioxide emitted per
  14. June 2023, Chemistry Paper 2 Foundation, Q02.7 (2 marks): Figure 2 shows the annual change in forest area in four different parts of the world. Figure 2 Give two conclusions about the annual change in forest area. [2 m
  15. June 2023, Chemistry Paper 2 Foundation, Q02.8 (1 mark): Methane is a greenhouse gas. Figure 3 shows sources of methane emissions. Figure 3 Determine the percentage (%) of methane emissions from landfill. [1 mark] Per
  16. June 2022, Chemistry Paper 2 Higher, Q04.5 (6 marks): Window frames can be manufactured from wood or from plastic. Table 2 shows data from a life cycle assessment (LCA) for a wooden window frame and a plastic windo
  17. November 2021, Chemistry Paper 2 Higher, Q05.6 (3 marks): Emissions from cars contain carbon dioxide. Explain why carbon dioxide emissions during use and operation are not the total carbon footprint for a car. Refer to
  18. November 2021, Chemistry Paper 2 Foundation, Q03.1 (2 marks): An increase in global temperature is a major cause of climate change. Give two effects of global climate change. [2 marks] 1 2
  19. November 2021, Chemistry Paper 2 Foundation, Q03.2 (2 marks): Describe the trend in the percentage of carbon dioxide in the Earth’s atmosphere from 1750 to 2000. Use Figure 3. [2 marks]
  20. November 2021, Chemistry Paper 2 Foundation, Q03.3 (2 marks): Determine the change in the percentage of carbon dioxide in the Earth’s atmosphere from 1950 to 2000. Use Figure 3. [2 marks] Percentage of carbon dioxide in 19
  21. November 2021, Chemistry Paper 2 Foundation, Q03.4 (1 mark): Give one reason why the percentage of carbon dioxide in the atmosphere is changing. [1 mark]
  22. November 2021, Chemistry Paper 2 Foundation, Q03.5 (2 marks): Predict the percentage of carbon dioxide in the Earth’s atmosphere in 2050. You should extend the graph line on Figure 3. [2 marks] Percentage of carbon dioxide
  23. November 2020, Chemistry Paper 2 Higher, Q06.1 (1 mark): Carbon dioxide is a greenhouse gas. The greenhouse effect happens in four stages. The four stages are: Stage A Carbon dioxide stops longer wavelength radiation
  24. November 2020, Chemistry Paper 2 Higher, Q06.2 (3 marks): The mass of gas in Earth’s atmosphere remains constant at 5.15 × 1018 kg Determine the maximum mass of carbon dioxide that was in the Earth’s atmosphere. Use Fi
  25. November 2020, Chemistry Paper 2 Higher, Q06.3 (6 marks): Describe the processes that have caused the main changes in the percentage of carbon dioxide in the Earth’s atmosphere over the last 4.6 billion years. Use Figu
  26. November 2020, Chemistry Paper 2 Foundation, Q02.2 (2 marks): The percentage of carbon dioxide in the atmosphere has decreased since Earth’s early atmosphere. Which two processes have decreased the percentage of carbon dio
  27. November 2020, Chemistry Paper 2 Foundation, Q02.3 (1 mark): The total amount of carbon dioxide emitted over the life cycle of a product can be measured. What name is given to the total amount of carbon dioxide emitted du
  28. November 2020, Chemistry Paper 2 Foundation, Q02.6 (1 mark): Carbon dioxide is a greenhouse gas. The greenhouse effect happens in four stages. The four stages are: Stage A Carbon dioxide stops longer wavelength radiation
  29. November 2020, Chemistry Paper 2 Foundation, Q02.7 (2 marks): Changes in the percentage of carbon dioxide in the Earth’s atmosphere cause climate change. Give two effects of climate change. [2 marks] 1 2
  30. June 2019, Chemistry Paper 2 Higher, Q02.2 (6 marks): Table 1 shows the carbon footprint during the manufacture and use of three cars. Table 1 Car Mass of CO2 produced during manufacture in kg Mass of CO2 produced
  31. June 2019, Chemistry Paper 2 Higher, Q04.4 (2 marks): Copper is a catalyst in a reaction to produce ethanol from carbon dioxide. Ethanol (C2H5OH) is used as a fuel. Suggest why producing ethanol from carbon dioxide
  32. June 2019, Chemistry Paper 2 Higher, Q07.4 (4 marks): Carbon dioxide is a greenhouse gas. Describe the greenhouse effect in terms of the interaction of short and long wavelength radiation with matter. [4 marks]
  33. June 2018, Chemistry Paper 2 Higher, Q02.1 (1 mark): Carbon dioxide is a greenhouse gas. What is another greenhouse gas? [1 mark] Tick one box. Argon Methane Nitrogen Oxygen
  34. June 2018, Chemistry Paper 2 Higher, Q02.2 (2 marks): Greenhouse gases cause global climate change. Give two effects of global climate change. [2 marks] 1 2
  35. June 2018, Chemistry Paper 2 Higher, Q02.3 (2 marks): 4.1 kg of a plastic, used to make plastic bottles, has a carbon footprint of 6.0 kg of carbon dioxide. Calculate the carbon footprint of one plastic bottle of m
  36. June 2018, Chemistry Paper 2 Higher, Q02.4 (1 mark): Give one way that carbon dioxide emissions can be reduced when a plastic bottle is manufactured. [1 mark]

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