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Solid, liquid and gas: OCR A‑Level Physics A questions

Every OCR A-Level Physics A exam question on 5.1.2 Solid, liquid and gas, 2016–2025, with its mark scheme and examiner’s report.

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1,877 questions

  1. Q5

    June 2025 · Paper 1

    1 mark5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2025 Paper 1, question 5: A material is heated so that it changes state from solid to liquid and after further heating changes to gas. Which of the following properties of the particles

  2. Q19(b)

    June 2025 · Paper 1

    2 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2025 Paper 1, question 19(b): Explain, in terms of particle energies, why the temperature of the oxygen remains constant despite the transfer of thermal energy into the tank. [2]

  3. Q3(b)

    June 2025 · Paper 3

    3 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2025 Paper 3, question 3(b): A second proposed method for storing energy uses a tank of wax. The wax is heated using an electrical heater, storing surplus energy as internal energy of the w

  4. Q9

    June 2023 · Paper 1

    1 mark5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2023 Paper 1, question 9: During cold weather salt is spread on roads causing ice to melt without changing its temperature. Which statement correctly describes the energy of the water pa

  5. Q19(a)

    June 2022 · Paper 1

    2 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2022 Paper 1, question 19(a): A fixed mass of nitrogen changes phase from liquid to gas at a constant temperature. Explain the change in the total internal energy of nitrogen. [2]

  6. Q18(b)(i)

    November 2021 · Paper 1

    2 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    November 2021 Paper 1, question 18(b)(i): Describe the motions of the molecules in region X and in region Z. [2]

  7. Q18(b)(ii)

    November 2021 · Paper 1

    3 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    November 2021 Paper 1, question 18(b)(ii): The internal energy of the ice increases from t = 0 to t = 77 s. Complete the table below using the following key for the physical quantities: • K = kinetic ene

  8. Q17(a)(i)

    November 2020 · Paper 1

    3 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    November 2020 Paper 1, question 17(a)(i): Before switching on, the metal heater and the water are both at room temperature. Describe the motion of the atoms of the metal heater and of the water molecule

  9. Q9

    June 2019 · Paper 1

    1 mark5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2019 Paper 1, question 9: A solid molecular substance is supplied with energy and it starts to melt. Which of the following pairs of quantities remains the same as the substance melts? A

  10. Q21(a)

    June 2019 · Paper 1

    4 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2019 Paper 1, question 21(a): Use the kinetic theory of matter to describe the solid phase (section AB) and the liquid phase (section CD) in terms of the motion and arrangement of the molecu

  11. Q21(c)

    June 2019 · Paper 1

    1 mark5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2019 Paper 1, question 21(c): State what is meant by the internal energy of the substance. [1]

  12. Q22(a)

    June 2017 · Paper 1

    1 mark5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2017 Paper 1, question 22(a): Define the internal energy of a substance. [1]

  13. Q22(b)

    June 2017 · Paper 1

    4 marks5.1.2 Solid, liquid and gas
    The whole paper ↗
    June 2017 Paper 1, question 22(b): A block of paraffin wax is melting at a constant temperature of 52 °C. Use the behaviour of paraffin molecules to describe and explain the changes to the intern
All 13 questions on Solid, liquid and gas, as a list
  1. June 2025, Paper 1, Q5 (1 mark): A material is heated so that it changes state from solid to liquid and after further heating changes to gas. Which of the following properties of the particles
  2. June 2025, Paper 1, Q19(b) (2 marks): Explain, in terms of particle energies, why the temperature of the oxygen remains constant despite the transfer of thermal energy into the tank. [2]
  3. June 2025, Paper 3, Q3(b) (3 marks): A second proposed method for storing energy uses a tank of wax. The wax is heated using an electrical heater, storing surplus energy as internal energy of the w
  4. June 2023, Paper 1, Q9 (1 mark): During cold weather salt is spread on roads causing ice to melt without changing its temperature. Which statement correctly describes the energy of the water pa
  5. June 2022, Paper 1, Q19(a) (2 marks): A fixed mass of nitrogen changes phase from liquid to gas at a constant temperature. Explain the change in the total internal energy of nitrogen. [2]
  6. November 2021, Paper 1, Q18(b)(i) (2 marks): Describe the motions of the molecules in region X and in region Z. [2]
  7. November 2021, Paper 1, Q18(b)(ii) (3 marks): The internal energy of the ice increases from t = 0 to t = 77 s. Complete the table below using the following key for the physical quantities: • K = kinetic ene
  8. November 2020, Paper 1, Q17(a)(i) (3 marks): Before switching on, the metal heater and the water are both at room temperature. Describe the motion of the atoms of the metal heater and of the water molecule
  9. June 2019, Paper 1, Q9 (1 mark): A solid molecular substance is supplied with energy and it starts to melt. Which of the following pairs of quantities remains the same as the substance melts? A
  10. June 2019, Paper 1, Q21(a) (4 marks): Use the kinetic theory of matter to describe the solid phase (section AB) and the liquid phase (section CD) in terms of the motion and arrangement of the molecu
  11. June 2019, Paper 1, Q21(c) (1 mark): State what is meant by the internal energy of the substance. [1]
  12. June 2017, Paper 1, Q22(a) (1 mark): Define the internal energy of a substance. [1]
  13. June 2017, Paper 1, Q22(b) (4 marks): A block of paraffin wax is melting at a constant temperature of 52 °C. Use the behaviour of paraffin molecules to describe and explain the changes to the intern

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