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Energy and matter: OCR A‑Level Chemistry B questions

Every OCR A-Level Chemistry B exam question on O Energy and matter (specification points O(n)), 2016–2025, with its mark scheme and examiner’s report.

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2,049 questions

  1. Q2

    June 2025 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    June 2025 Paper 1, question 2: What is correct about the greenhouse effect? A Greenhouse gas bonds vibrate more when warmed by infrared radiation. B Greenhouse gases reflect infrared radiatio

  2. Q28

    June 2023 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    June 2023 Paper 1, question 28: Which of these would cause an increased greenhouse effect? 1 an increased concentration of CO2 in the troposphere 2 less UV from the Sun reaching the Earth 3 th

  3. Q3(a)(vi)

    June 2023 · Paper 2

    3 marksO Energy and matter
    The whole paper ↗
    June 2023 Paper 2, question 3(a)(vi): The carbon dioxide produced by the process in Equation 3.1 is a greenhouse gas. Describe two ways in which greenhouse gases in the troposphere cause warming whe

  4. Q7

    June 2022 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    June 2022 Paper 1, question 7: What is correct about the greenhouse effect? A Carbon dioxide is the only gas in the troposphere that acts as a greenhouse gas. B Infrared radiation breaks bond

  5. Q1(c)

    June 2022 · Paper 3

    1 markO Energy and matter
    The whole paper ↗
    June 2022 Paper 3, question 1(c): Some haloalkanes act as greenhouse gases that absorb infrared radiation in the troposphere. Give the source of this infrared radiation. [1]

  6. Q6

    November 2021 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    November 2021 Paper 1, question 6: What is correct about the greenhouse effect? A Greenhouse gases are found in a thin layer in the Earth’s atmosphere. B Infrared radiation causes bonds in greenh

  7. Q7

    November 2020 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    November 2020 Paper 1, question 7: What causes an enhanced greenhouse effect? A Less ozone in the ozone layer B Less UV from the Sun C More methane in the troposphere D More ozone in the troposph

  8. Q22

    June 2019 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    June 2019 Paper 1, question 22: Which statement about the greenhouse effect is correct? A UV radiation from the Sun increases the vibrational energy of greenhouse gases. B The Earth absorbs UV

  9. Q27

    June 2017 · Paper 1

    1 markO Energy and matter
    The whole paper ↗
    June 2017 Paper 1, question 27: Which statement(s) connected with the greenhouse effect is/are correct? 1 The Earth radiates infrared radiation. 2 Solar energy heats the surface of the Earth.
All 9 questions on Energy and matter, as a list
  1. June 2025, Paper 1, Q2 (1 mark): What is correct about the greenhouse effect? A Greenhouse gas bonds vibrate more when warmed by infrared radiation. B Greenhouse gases reflect infrared radiatio
  2. June 2023, Paper 1, Q28 (1 mark): Which of these would cause an increased greenhouse effect? 1 an increased concentration of CO2 in the troposphere 2 less UV from the Sun reaching the Earth 3 th
  3. June 2023, Paper 2, Q3(a)(vi) (3 marks): The carbon dioxide produced by the process in Equation 3.1 is a greenhouse gas. Describe two ways in which greenhouse gases in the troposphere cause warming whe
  4. June 2022, Paper 1, Q7 (1 mark): What is correct about the greenhouse effect? A Carbon dioxide is the only gas in the troposphere that acts as a greenhouse gas. B Infrared radiation breaks bond
  5. June 2022, Paper 3, Q1(c) (1 mark): Some haloalkanes act as greenhouse gases that absorb infrared radiation in the troposphere. Give the source of this infrared radiation. [1]
  6. November 2021, Paper 1, Q6 (1 mark): What is correct about the greenhouse effect? A Greenhouse gases are found in a thin layer in the Earth’s atmosphere. B Infrared radiation causes bonds in greenh
  7. November 2020, Paper 1, Q7 (1 mark): What causes an enhanced greenhouse effect? A Less ozone in the ozone layer B Less UV from the Sun C More methane in the troposphere D More ozone in the troposph
  8. June 2019, Paper 1, Q22 (1 mark): Which statement about the greenhouse effect is correct? A UV radiation from the Sun increases the vibrational energy of greenhouse gases. B The Earth absorbs UV
  9. June 2017, Paper 1, Q27 (1 mark): Which statement(s) connected with the greenhouse effect is/are correct? 1 The Earth radiates infrared radiation. 2 Solar energy heats the surface of the Earth.

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