AO / Spec Question Answers Extra information Marks ref. 01.1 D, C, E, A 1 mark for one letter in 3 AO2 the correct order. P3.1.1 2 marks for two in the WS 2.2 correct order. 3 marks for all in the correct order. 01.2 The ice cube may melt. Accept any sensible 1 AO3 answer. random error 1 WS 3.7 01.3 1 AO2×2 2800 1 mark for correct AO1×1 answer. kg/m3 1 P3.1.1 1 mark for correct unit. 1 02.1 The internal energy store of the gas does not Award no marks if more 1 AO1 change. than one box ticked. P3.3.3 02.2 temperature 1 AO1 P3.3.3 02.3 0.06 2 260 000 Accept 135 600 (J) with 1 AO2 no working shown for 2 1 135 600 (J) P3.2.3 marks. 02.4 reduces the amount of chemicals used Any sensible answer. 1 AO3 WS 1.4 03 Solid particles have less energetic than liquid 1 AO1 particles 1 P3.1.1 Liquid particles are less energetic than gas 1 particles. 1 particles are in contact. 1 liquid particles are in contact. 1 Liquid and gas particles are free to move. Solid particles vibrate about a fixed position. 04.1 = 0.5 kg Accept 22.5 (kJ) with 1 AO2 no working shown for P3.2.3 0.5 × 45 000 4 marks. 22 500 1 22.5 (kJ) 1 1 AO / Spec Question Answers Extra information Marks ref. 04.2 16 275 = 0.5 × specific heat capacity × 155 Accept 210 with no 1 AO2×3 working shown for 3 1 AO1×1 marks.
Question Answers Extra information Marks AO / Spec ref. 01.1 D, C, E, A 1 mark for one letter in the correct order. 2 marks for two in the correct order. 3 marks for all in the correct order. 3 AO2 P3.1.1 WS 2.2 01.2 The ice cube may melt. random error Accept any sensible answer. 1 1 AO3 WS 3.7 01.3 2800 kg/m3 1 mark for correct answer. 1 mark for correct unit. 1 1 1 AO2×2 AO1×1 P3.1.1 02.1 The internal energy store of the gas does not change. Award no marks if more than one box ticked. 1 AO1 P3.3.3 02.2 temperature 1 AO1 P3.3.3 02.3 0.06 2 260 000 135 600 (J) Accept 135 600 (J) with no working shown for 2 marks. 1 1 AO2 P3.2.3 02.4 reduces the amount of chemicals used Any sensible answer. 1 AO3 WS 1.4 03 Solid particles have less energetic than liquid particles Liquid particles are less energetic than gas particles. particles are in contact. liquid particles are in contact. Liquid and gas particles are free to move. Solid particles vibrate about a fixed position. 1 1 1 1 1 1 AO1 P3.1.1 04.1 = 0.5 kg 0.5 × 45 000 22 500 22.5 (kJ) Accept 22.5 (kJ) with no working shown for 4 marks. 1 1 1 1 AO2 P3.2.3 Question Answers Extra information Marks AO / Spec ref. 04.2 16 275 = 0.5 × specific heat capacity × 155 Accept 210 with no working shown for 3 marks. 1 1 AO2×3 AO1×1
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