2023 AQA GCSE COMBINED SCIENCE: SYNERGY 8465/3F Foundation Tier Paper 3 Physical Sciences Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA GCSE COMBINED SCIENCE: SYNERGY 8465/3F Foundation Tier Paper 3 Physical Sciences Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Friday 9 June 2023 Afternoon 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. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL (JUN2384653F01) 8465/3F G/LM/Jun23/E6 2 0 1 This question is about acids and alkalis. Universal indicator is used to measure the pH of solutions. 0 1 . 1 Which is a pH value of an alkaline solution? Tick () one box. [1 mark] 5 7 9 0 1 . 2 Which is a colour of universal indicator in an alkaline solution? [1 mark] Tick () one box. Blue Red Yellow 0 1 . 3 What piece of equipment measures the pH of a solution more accurately than universal indicator? [1 mark] ___________________________________________________________________________________ Do not write outside the box (02) G/Jun23/8465/3F 3 0 1 . 4 Which ion do all acids produce in aqueous solution? Tick () one box. [1 mark] H + OH− O 2− 0 1 . 5 The reaction between an acid and an alkali produces water. What is the name of this type of reaction? [1 mark] Tick () one box. Combustion Decomposition Neutralisation Question 1 continues on the next page Turn over U (03) Do not write outside the box G/Jun23/8465/3F 4 0 1 . 6 Sulfuric acid has the formula H2SO4 What is the total number of atoms in the formula H2SO4? [1 mark] Tick () one box. 3 6 7 10 0 1 . 7 0.5 dm3 of a solution of sulfuric acid contains 9.8 g of sulfuric acid. Calculate the concentration of the solution of sulfuric acid. Use the equation: concentration = mass of sulfuric acid volume of solut