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Specific Heat Capacity and Latent Heat Questions - GCSE standard

Q8. The diagram shows water being heated. Eventually the water changed into steam.

(a)

(i) How does the average distance between the particles in steam differ from the average distance between the particles in liquid water?

(ii) How does the density of steam compare to the density of liquid water?

[2 marks]

(b) The sketch-graph shows how the temperature of the water varied with time.

What is the name of the process that is taking place between points A and B? Give a reason for your answer.

[2 marks]

(c) A mass of 63 g of water was turned into steam. The specific latent heat of vaporisation of water is 2.26 MJ/kg

Calculate the thermal energy transferred to the water to turn it into steam.

[4 marks]

(d) The mass of the steam was 0.063 kg. The volume of the steam was 0.105 m3

Calculate the density of steam.

[3 marks]

(Total 11 marks)