CAIE IGCSE Physics 2.2.2.3 Specific heat capacity as energy

Practise defining specific heat capacity and applying c = ΔE/(mΔT) to water, oils, metals and heating experiment data.

Exam points

calculate ΔE, m, c or ΔT from c = ΔE/(mΔT), keeping units consistent
use density and volume data to find mass before a specific heat capacity calculation
compare heating times by linking higher c to more energy for the same temperature rise

[Maximum number: 4]

Fig. 4.1 shows a metal pan on an electric hotplate. The pan contains $200 \mathrm{~cm}^{3}$ of water.

Fig. 4.1

The pan is heated. The temperature of the water in the pan increases.

The water is replaced with $200 \mathrm{~cm}^{3}$ of milk.

The initial temperature of the milk is $20.0^{\circ} \mathrm{C}$ . The boiling point of milk is $95.0^{\circ} \mathrm{C}$ .
The milk starts to boil when 60700 J of thermal energy has been transferred to it. The density of milk is $1.03 \mathrm{~g} / \mathrm{cm}^{3}$ .

Calculate the value of the specific heat capacity of milk. Give your answer to 3 significant figures.

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2.2.2.3—Specific heat capacity as energy question 1