Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Change of State
56 practice questions
Topics covered
Practice questions
11–20 of 56
Question 11
3 marks · Normal
Answer and see the solution →A 250 g block of copper is heated from 20 °C to 50 °C. The specific heat capacity of copper is 390 J/kg°C. Calculate the amount of energy supplied.
Question 12
1 mark · Normal
Answer and check →Which statement best describes the motion of particles in a gas?
- A.They vibrate in fixed positions.
- B.They slide past each other.
- C.They move rapidly and randomly in all directions.
- D.They are packed very closely in a regular pattern.
Question 13
4 marks · Normal
Answer and see the solution →A student wants to compare how quickly different materials heat up when supplied with the same energy.
(a)[1 mark]Define specific heat capacity.
(b)[1 mark]Name one property, other than specific heat capacity, that should be kept the same for each material in the comparison.
(c)[2 marks]Explain, using the concept of specific heat capacity, why one material heats up more than another when both are supplied with the same amount of energy.
Question 14
4 marks · Normal
Answer and see the solution →Table 1: Temperature change for materials A and B when 4,000 J of energy is supplied Material Mass (kg) Specific Heat Capacity (J/kg°C) Temperature increase (°C) A 0.5 800 10 B 0.5 400 20 (a)[1 mark]For material A, calculate the energy required to raise its temperature by 1 °C.
(b)[3 marks]Explain, using data from the table, why material B's temperature increases more than material A's when they are supplied with the same energy.
Question 15
3 marks · Normal
Answer and see the solution →Describe what happens to the movement and arrangement of particles when a solid turns into a liquid as it is heated.
Question 16
3 marks · Normal
Answer and see the solution →Describe one practical method to measure the specific heat capacity of a metal block in the laboratory. Outline at least three key steps.
Question 17
1 mark · Easy
Answer and see the solution →State the SI unit of specific heat capacity.
Question 18
2 marks · Easy
Answer and see the solution →A student heats a 0.25 kg aluminium block from 20 °C to 40 °C, supplying 2,200 J of energy. Calculate the specific heat capacity of aluminium.
Question 19
1 mark · Easy
Answer and see the solution →Name two pieces of apparatus you would use to measure the temperature change in a specific heat capacity experiment.
Question 20
2 marks · Easy
Answer and see the solution →Explain why it is important to use insulation when measuring the specific heat capacity of a substance.