SubjectCover

Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter

Change of State

56 practice questions

Start practising (31 questions)

Topics covered

Practice questions

31–31 of 31 · Normal

  1. Question 31

    6 marks · Normal

    In an experiment to find the specific heat capacity of a liquid, the following apparatus is set up:

    Apparatus: beaker (liquid sample), boiling tube (immersion heater), thermometer (thermometer)immersion heaterthermometerliquid sample
    Apparatus for specific heat capacity experiment

    The experiment is performed twice with the same mass of liquid but different power outputs of the heater. The following data is collected:

    Experimental data
    TrialMass (kg)ΔT (°C)Heater Power (W)Time (s)
    10.52040400
    20.51550300
    (a)

    Write down the equation needed to calculate the specific heat capacity of the liquid from the energy supplied and the temperature change.

    [1 mark]
    (b)

    Calculate the specific heat capacity from the data in Trial 1. Show your working.

    [3 marks]
    (c)

    Suggest one practical reason why the values obtained in Trials 1 and 2 may not be exactly the same.

    [2 marks]
    Answer and see the solution →