Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Change of State
56 practice questions
Topics covered
Practice questions
1–10 of 31 · Normal
Question 1
4 marks · Normal
Answer and see the solution →The diagram shows particles in three different states of matter: solid, liquid, and gas.
(a)[2 marks]Describe the arrangement and movement of particles in a solid.
(b)[2 marks]Explain why solids cannot be easily compressed, using ideas about particles.
Question 2
2 marks · Normal
Answer and see the solution →State one property that is shared by both liquids and gases, and describe how the particles in a liquid are arranged compared to a solid.
Question 3
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 4
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 5
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 6
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 7
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 8
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 9
4 marks · Normal
Answer and see the solution →A student carries out an experiment to measure the specific heat capacity of a piece of copper metal using the apparatus below.
(a)[1 mark]State the equation used to calculate the energy supplied by the heater.
(b)[3 marks]The student measures the following values: - Mass of copper, - Voltage supplied by heater, - Current through heater, - Heating time, - Initial temperature, - Final temperature, Calculate the specific heat capacity of copper found by the experiment.
Question 10
4 marks · Normal
Answer and see the solution →A student wants to find the specific heat capacity of water using an electric immersion heater.
(a)[2 marks]Describe how the student could carry out this experiment. You may refer to apparatus, measurements, and calculations. List at least three key steps.
(b)[1 mark]State one precaution the student should take to improve the accuracy of the result.
(c)[1 mark]Explain why a lid is used on the beaker during the experiment.