AQA GCSE Combined Science Physics Paper 1 Higher Question Paper.

er Tier Physics Paper 1 1 of 17 AQA GCSE Combined Science Physics Paper 1 Higher Question Paper. A chef wants to melt 0.5kg of chocolate. Describe the movement of particles in the chocolate before it is heated. [1 mark] The chef heats the chocolate over a pan of boiling water. The temperature of the chocolate increases by 9°C. The energy transferred to the chocolate was 9450J. Calculate the specific heat capacity of the chocolate. Use the correct equation from the Physics Equation Sheet. [3 marks] specific heat capacity = J/kg °C When the chocolate reaches 30°C, it starts to melt. The energy required for all of the chocolate to melt can be calculated using the equation: thermal energy for a change of state = mass × specific latent heat What is the difference between specific heat capacity and specific latent heat? [2 marks] Describe what happens to the temperature of the chocolate as it melts. [1 mark] 0 1 0 1 . 1 0 1 . 2 0 1 . 3 0 1 . 4 2 of 17 10 Explain what will happen to the mass of the chocolate when it has all melted. [2 marks] Melting is an example of a physical change. Explain why melting is a physical change rather than a chemical change. [1 mark] 0 1 . 5 0 1 . 6 Turn over for the next question