Lesson 5.1.3

5.1.3 Thermal properties of materials Quiz: OCR Physics, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 5.1.3, Thermal properties of materials: 20 multiple choice questions for the OCR Physics (H156), Unit 4: Newtonian world and astrophysics, written with Revision Ninja.

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The 20 questions

  1. What quantity is the energy required per unit mass to raise temperature by one kelvin?

    • Internal energy
    • Specific heat capacity
    • Specific latent heat
    • Thermal capacity

  2. The equation for heating a substance with specific heat capacity c is:

    • E = m v^2 / 2 always
    • E = mc(delta theta)
    • E = mL
    • E = VIt only

  3. How much energy is needed to raise the temperature of 2.0 kg of water by 10 K? Take c = 4200 J kg^-1 K^-1.

    • 2.1 x 10^4 J
    • 8.4 x 10^3 J
    • 4.2 x 10^2 J
    • 8.4 x 10^4 J

  4. 200 J of energy raises the temperature of 0.50 kg of a metal by 10 K. What is its specific heat capacity?

    • 400 J kg^-1 K^-1
    • 100 J kg^-1 K^-1
    • 4.0 J kg^-1 K^-1
    • 40 J kg^-1 K^-1

  5. The specific latent heat of fusion of ice is 3.3 x 10^5 J/kg. How much energy melts 0.20 kg of ice at 0 C?

    • 3.3 x 10^4 J
    • 6.7 x 10^4 J
    • 6.7 x 10^3 J
    • 1.7 x 10^6 J

  6. What process requires energy per unit mass while maintaining a constant temperature?

    • Temperature rise
    • Thermal expansion
    • Phase change
    • Heat transfer

  7. In the method of mixtures without heat loss, energy lost by the hotter object equals energy gained by what?

    • Cooler object
    • Thermometer
    • Surroundings
    • Container

  8. In an electrical method for specific heat capacity, the electrical energy supplied is found from:

    • E = VIt
    • E = m g h
    • E = mc delta theta
    • E = mL

  9. A 12 V heater carries 2.0 A for 100 s. How much electrical energy is supplied?

    • 24 J
    • 2400 J
    • 0.17 J
    • 600 J

  10. 2400 J of electrical energy heats 0.50 kg of a metal block by 4.0 K. What is the specific heat capacity of the metal?

    • 4800 J kg^-1 K^-1
    • 120 J kg^-1 K^-1
    • 240 J kg^-1 K^-1
    • 1200 J kg^-1 K^-1

  11. 100 g of hot water at 80 C is mixed with 100 g of cold water at 20 C. Ignoring losses, the final temperature is:

    • 30 C
    • 40 C
    • 60 C
    • 50 C

  12. Which process requires breaking almost all intermolecular bonds in a substance?

    • Vaporisation
    • Melting
    • Freezing
    • Fusion

  13. A heater of power 60 W supplies energy for 200 s to melt 0.05 kg of a solid at its melting point. What is the specific latent heat of fusion?

    • 6.0 x 10^5 J/kg
    • 3.0 x 10^3 J/kg
    • 1.5 x 10^2 J/kg
    • 2.4 x 10^5 J/kg

  14. 0.30 kg of water at 60 C is mixed with 0.20 kg of water at 20 C with no losses. What is the final temperature?

    • 60 C
    • 44 C
    • 40 C
    • 30 C

  15. To convert 1.0 kg of water at 100 C into steam at 100 C, with specific latent heat of vaporisation 2.3 x 10^6 J/kg, the energy needed is:

    • 4.2 x 10^5 J
    • 4.2 x 10^6 J
    • 2.3 x 10^3 J
    • 2.3 x 10^6 J

  16. A 0.50 kg block receives 300 J of energy and its temperature rises by 2.0 K. What is its specific heat capacity?

    • 1200 J kg^-1 K^-1
    • 300 J kg^-1 K^-1
    • 150 J kg^-1 K^-1
    • 600 J kg^-1 K^-1

  17. What is the main effect of uninsulated heat losses in a thermal mixture experiment?

    • Higher temperature
    • Increased mass
    • Zero energy
    • Inaccurate capacity

  18. In an experiment to find the specific latent heat of fusion, 0.025 kg is melted in 90 s by a 40 W supply. What is the latent heat?

    • 9.0 x 10^3 J/kg
    • 3.6 x 10^5 J/kg
    • 2.3 x 10^4 J/kg
    • 1.4 x 10^5 J/kg

  19. A 0.40 kg metal block cools from 100 C to 20 C, releasing 25.6 kJ. What is its specific heat capacity?

    • 1600 J kg^-1 K^-1
    • 80 J kg^-1 K^-1
    • 800 J kg^-1 K^-1
    • 400 J kg^-1 K^-1

  20. Which is the correct unit of specific latent heat?

    • kg J^-1
    • J kg^-1
    • J kg^-1 K^-1
    • J m^-3

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