AQA COMBINED SCIENCE: SYNERGY Paper 4 Physical Sciences JUNE 2023

GCSE COMBINED SCIENCE: SYNERGY Higher Tier Paper 4 Physical Sciences Tuesday 13 June 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have:  a ruler  a protractor  a scientific calculator  the periodic table (enclosed)  the Physics Equations Sheet (enclosed). Instructions  Use black ink or black ball-point pen. Pencil should only be used for drawing.  Fill in the boxes at the top of this page.  Answer all questions in the spaces provided. Do not write outside the box around each page or on blank pages.  If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s).  Do all rough work in this book. Cross through any work you do not want to be marked.  In all calculations, show clearly how you work out your answer. Information  The maximum mark for this paper is 100.  The marks for questions are shown in brackets.  You are expected to use a calculator where appropriate.  You are reminded of the need for good English and clear presentation in your answers. 8465/4H There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED box This question is about hydrocarbon fuels. The complete combustion of a hydrocarbon fuel produces carbon dioxide and one other product. . 1 Name the other product of the complete combustion of a hydrocarbon fuel. Do not refer to carbon dioxide. [1 mark] . 2 Describe the test for carbon dioxide. Give the result if carbon dioxide is present. [2 marks] Test Result Question 1 continues on the next page Turn over U The combustion of hydrocarbon fuels releases energy. A student investigated the energy released by three different fuels A, B and C. Figure 1 shows the apparatus. Figure 1