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Printable Physics practice

Six original questions. Worked answers start on a separate page.

· Forces, energy and momentum PDF · DC circuits and electrical energy PDF · Waves, phase and interference PDF · GCSE density and measurement PDF · GCSE heating and changes of state PDF · GCSE Hooke’s law and elastic energy PDF · GCSE practical calculations: mixed review PDF

Each set number reproduces the same questions. For classroom display or interactive checking, open a question’s practice link.

Treat the given values as exact unless an uncertainty is stated.

GCSE heating and changes of state

Set 42 · Original PhysicsHelp questions · Selected AQA 8463 / OCR Gateway J249 skills

Question 1

Heat 0.7 kg of a substance through 27 °C. Its specific heat capacity is 500 J kg⁻¹ °C⁻¹. Calculate the energy transferred to it. Give your answer to 3 significant figures.

gcse-thermal / energy / v1.0.0 / seed 42 · Check interactively

Question 2

8640 J transferred to a 0.6 kg sample raises its temperature by 16 °C without a change of state. Find its specific heat capacity. Give your answer to 3 significant figures.

gcse-thermal / capacity / v1.0.0 / seed 104771 · Check interactively

Question 3

Transfer 21000 J to 0.5 kg of a substance with specific heat capacity 4200 J kg⁻¹ °C⁻¹. There is no change of state. Find the temperature rise. Give your answer to 3 significant figures.

gcse-thermal / temperature-rise / v1.0.0 / seed 209500 · Check interactively

Question 4

A heater transfers energy to a 0.6 kg block at 40 W for 144 s. The block warms by 24 °C. Ignore energy transferred to the surroundings and apparatus. Find its specific heat capacity. Give your answer to 3 significant figures.

Heater 40 W for 144 sBlock 0.6 kg; rise 24 °CHeaterProbe
Heater power 40 W for 144 s; block mass 0.6 kg and temperature rise 24 °C. Energy losses are ignored as stated in the question.

gcse-thermal / heater / v1.0.0 / seed 314229 · Check interactively

Question 5

0.5 kg of a solid is already at its melting temperature. Its specific latent heat of fusion is 200000 J kg⁻¹. Find the energy needed to melt it completely at constant temperature. Give your answer to 3 significant figures.

gcse-thermal / latent-energy / v1.0.0 / seed 418958 · Check interactively

Question 6

A heater supplies 16200 J. Of this, 8100 J goes to the surroundings and apparatus. The remaining energy warms a 0.9 kg sample by 18 °C. Find its specific heat capacity. Give your answer to 3 significant figures.

gcse-thermal / heat-loss / v1.0.0 / seed 523687 · Check interactively

Worked answers — GCSE heating and changes of state

Set 42. Keep intermediate values unrounded. The stated practice checks accept values rounding to 3 significant figures.

Question 1

  1. E = 0.7 × 500 × 27 J.
  2. Answer: 9.45 × 103 J (3 significant figures).

Question 2

  1. c = 8640 / (0.6 × 16) J kg⁻¹ °C⁻¹.
  2. Answer: 900 J kg⁻¹ °C⁻¹ (3 significant figures).

Question 3

  1. Δθ = 21000 / (0.5 × 4200) °C.
  2. Answer: 10.0 °C (3 significant figures).

Question 4

  1. E = 40 × 144 = 5760 J.
  2. c = 5760 / (0.6 × 24) J kg⁻¹ °C⁻¹.
  3. Answer: 400 J kg⁻¹ °C⁻¹ (3 significant figures).

Question 5

  1. E = 0.5 × 200000 J.
  2. Answer: 1.00 × 105 J (3 significant figures).

Question 6

  1. E_sample = 16200 − 8100 = 8100 J.
  2. c = 8100 / (0.9 × 18) J kg⁻¹ °C⁻¹.
  3. Answer: 500 J kg⁻¹ °C⁻¹ (3 significant figures).