CAIE IGCSE Physics 2.2.3.1 Melting and Boiling in Terms of Energy Questions

Practise identifying melting and boiling plateaus, explaining latent energy through particle potential energy, and calculating E = mL with CAIE IGCSE Physics questions and mark schemes.

Exam points

Identify melting and boiling plateaus, explain latent energy as increased particle potential energy, and calculate E = mL.

[Maximum number: 5]

(a)

Define specific latent heat of vaporisation.

[ 2 ]

(b)

Fig. 5.1 shows an insulating beaker, crushed ice, an immersion heater and a thermometer.

Fig. 5.1

The initial temperature of the ice is $-60^{\circ} \mathrm{C}$ .
The immersion heater is switched on and the temperature is recorded at equal intervals of time.
Fig. 5.2 shows the temperature-time graph.

Fig. 5.2

Describe what occurs in each of the sections A, B, C and D.
A

B
C

D

[ 3 ]

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CAIE IGCSE Physics 2.2.3.1 Melting and Boiling in Terms of Energy Questions question 1

Question (a)

Question (b)