Physics 5054 · O Level · Melting, boiling and evaporation

Melting, boiling and evaporation — practice question

(a)[2]

Define the term latent heat of fusion.

(b(i))[2]

On Fig. 3.1, sketch a graph showing how the temperature of the metal varies with time.

(b(ii))[2]

Explain in what way the temperature-time graph for Q is different from the graph in (b)(i).

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: energy required for a substance to change from solid to liquid

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