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3 marksTransfer of Thermal Energy

CSEC Physics · 1992 · Paper 2 · Question 1(a)

Thermal and electrical properties of materials, an ice-cream maker apparatus, and thermal calculations involving ice and water.

Identify air, mercury, and aluminium as good or poor thermal and electrical conductors by writing 'GOOD' or 'POOR' in the spaces provided.

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Other parts of this question

  1. 1(b)(i)Indicate on the diagram by means of an arrow, the direction of heat flow between the mixture and the ice/salt.[1 mark]
  2. 1(b)(ii)Explain why the inner container is made of a good thermal conductor while the outer container is made of a poor thermal conductor.[2 marks]
  3. 1(c)(i)0.30 kg of ice at 0 °C is placed in a container. Calculate how much energy is required to completely melt the ice. (Specific latent heat of fusion of ice = 3.3…[3 marks]
  4. 1(c)(ii)Calculate how much energy is required to raise the temperature of the melted ice to 15 °C. (Specific heat capacity of water = 4.2 x 10^3 J kg^-1 K^-1)[3 marks]
  5. 1(c)(iii)Some water at 30 °C is added to 0.30 kg of ice at 0 °C. The ice melts and the final temperature of all the water is 15 °C. Use your answers to (i) and (ii)…[4 marks]

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