AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Question Paper + Mark scheme [MERGED] June 2022 *jUN2284621H01* IB/M/Jun22/E10 8462/1H For Examiner’s Use Question Mark 1 2

AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Question Paper + Mark scheme [MERGED] June 2022 *jUNH01* IB/M/Jun22/E10 8462/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 TOTAL Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (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. Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. GCSE CHEMISTRY Higher Tier Paper 1 H 2 *02* IB/M/Jun22/8462/1H Do not write outside the 0 1 box This question is about metals and non-metals. Figure 1 shows an outline of part of the periodic table. Figure 1 0 1 . 1 Element Q is a dull solid with a melting point of 44 °C. Element Q does not conduct electricity. Which section of the periodic table in Figure 1 is most likely to contain element Q? [1 mark] Tick () one box. A B C D 0 1 . 2 Element R forms ions of formula R2+ and R3+ Which section of the periodic table in Figure 1 is most likely to contain element R? [1 mark] Tick () one box. A B C D 0 1 . 3 Give two differences between the physical properties of the elements in Group 1 and those of the transition elements. [2 marks] 1 2 3 *03* Turn over ► IB/M/Jun22/8462/1H Do not write outside the 0 1 box . 4 Complete Figure 2 to show the electronic structure of an aluminium atom. Use the periodic table. [1 mark] Figure 2 0 1 . 5 Aluminium is a metal. Describe how metals conduct electricity. Answer in terms of electrons. [3 marks] 0 1 . 6 Name the type of bonding in compounds formed between metals and non-metals. [1 mark] 4 *04* IB/M/Jun22/8462/1H Do not write outside the box 13 0 1 . 7 Magnesium oxide is a compound formed from the metal magnesium and the non-metal oxygen. Describe what happens when a magnesium atom reacts with an oxygen atom. You should refer to electrons in your answer. [4 marks] 5 *05* Turn over ► IB/M/Jun22/8462/1H Do not write outside the 0 2 Sodium carbonate reacts with hydrochloric acid in an exothermic reaction. box The equation for the reaction is: Na2CO3(s) + 2HCl(aq) → 2NaCl(aq) + CO2(g) + H2O(l) A student investigated the effect of changing the mass of sodium carbonate powder on the highest temperature reached by the reaction mixture. 0 2 . 1 Plan a method to investigate the effect of changing the mass of sodium carbonate powder on the highest temperature reached. [6 marks] 6 *06* IB/M/Jun22/8462/1H Do not write outside the box Figure 3 shows a line of best fit drawn through the student’s results. Figure 3 7 *07* Turn over ► IB/M/Jun22/8462/1H Do not write outside the 0 2 box . 2 Determine the gradient of the line of best fit in Figure 3. Use the equation: Gradient = Change in highest temperature Change in mass Give the unit. [5 marks] Gradient = Unit 0 2 . 3 The initial temperature of the reaction mixture is where the line of best fit would meet the y-axis. Determine the initial temperature of the reaction mixture. Show your working on Figure 3. [2 marks] Initial temperature of the reaction mixture = °C 8 *08* IB/M/Jun22/8462/1H Do not write outside the 0 2 box . 4 Another student repeated the investigation but added sodium carbonate until the sodium carbonate was in excess. Which sketch graph shows the results obtained when sodium carbonate was added until in excess? [1 mark] Tick () one box. A B C 9 *09* Turn over ► IB/M/Jun22/8462/1H Do not write outside the box 17 Figure 4 shows a reaction profile for the reaction of sodium carbonate with hydrochloric acid. Figure 4 0 2 . 5 What do labels X and Y represent on Figure 4? [2 marks] X Y 0 2 . 6 How does the reaction profile show that the reaction is exothermic? Use Figure 4. [1 mark] 10 *10* IB/M/Jun22/8462/1H Do not write outside the 0 3 box This question is about different forms of carbon. Figure 5 represents the structure of diamond. Figure 5 0 3 . 1 Describe the structure and bonding of diamond. [3 marks] 0 3 . 2 Explain why diamond has a very high melting point. [3 marks] 11 *11* Turn over ► IB/M/Jun22/8462/1H Do not write outside the Figure 6 box represents the molecule C70 Figure 6 0 3 . 3 What is the name of this type of molecule? [1 mark] Tick () one box. Fullerene Graphene Nanotube Polymer 0 3 . 4 Molecules such as C70 can be used in medicine to move drugs around the body. Suggest one reason why the C70 molecule is suitable for this use. [1 mark] 12 *12* IB/M/Jun22/8462/1H Do not write outside the box 11 0 3 . 5 Calculate the number of C70 molecules that can be made from one mole of carbon atoms. The Avogadro constant = 6.02 × 1023 per mole [3 marks] Number of molecules = 13 *13* Turn over ► IB/M/Jun22/8462/1H Do not write outside the 0 4 box This question is about zinc and compounds of zinc. A student produces pure crystals of zinc chloride by reacting zinc oxide with hydrochloric acid. The equation for the reaction is: ZnO(s) + 2HCl(aq) → ZnCl2(aq) + H2O(l) 0 4 . 1 The student adds zinc oxide to hydrochloric acid until the zinc oxide is in excess. Give one observation that the student could make to show that the zinc oxide is in excess