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Download Actual 2024 AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Merged Question Paper + Mark S and more Exams Chemistry in PDF only on Docsity!
Actual 2024 AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Merged Question Paper + Mark Scheme AQA= Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature | declare this is my own work. GCSE CHEMISTRY Higher Tier Paper 1 Friday 17 May 2024 Morning 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. 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. In all calculations, show clearly how you work out your answer. You are reminded of the need for good English and clear presentation in your answers. For Examiner's Use Question Mark ea/nlolalalolrn}|a TOTAL 6214H01 IB/M/Jun24/G4005/E10 8462/1H Do not write outside the A student produced a salt by reacting copper carbonate with sulfuric acid. box This is the method used. 1. Measure 50 cm* of sulfuric acid into a beaker. 2. Add copper carbonate powder. 3. Stir the mixture. 4. Repeat steps 2 and 3 until copper carbonate is in excess. 5. Filter the mixture. 6. Warm the filtrate gently until crystals start to appear. 7. Leave the solution to cool and crystallise. fo] 1].[1] Complete the word equation for the reaction. [2 marks] copper, sulfuric S + + carbon carbonate acid dioxide [o[1].[2] Give one observation the student could make during Step 4 which shows that the copper carbonate is in excess. [1 mark] [o[1].[3| Give one reason for filtering the mixture in Step 5. [1 mark] 02 IB/M/Jun24/8462/1H 2 [o[1 [6] IMAI Do not write outside the Some salts can be produced by reacting sulfuric acid with a metal. box Neither copper nor sodium is used to produce a salt with sulfuric acid. Give one reason why each metal is not used. [2 marks] Copper Sodium 10 IB/M/Jun24/8462/1H 4 Do not write outside the This question is about the periodic table. ‘box Sodium and potassium are in Group 1 of the periodic table. [o[2].[1] Give one similarity and one difference between the electronic structures of sodium and potassium. [2 marks] Similarity Difference Group 1 elements react with water. [o|2].[2| Give two observations made when potassium reacts with water. [2 marks] [o|2].[3| Potassium hydroxide solution is produced when potassium reacts with water. What is the colour of universal indicator when added to potassium hydroxide solution? Give one reason for your answer. [2 marks] Colour of universal indicator Reason Turn over > 05 IB/M/Jun24/8462/1H 5 Do not write outside the [0|2].[5] Estimate the density (X) of krypton. box Use Figure 1 and Table 1. [1 mark] Density = mg/cm? [o[2].[6| The elements in Group 7 are called the halogens. A more reactive halogen can displace a less reactive halogen from a solution of its salt. Which combination of solutions will produce a reaction when mixed? [1 mark] Tick (W) one box. Chlorine and potassium fluoride Chlorine and potassium bromide Bromine and potassium fluoride Bromine and potassium chloride Which of the following describes the trends going down Group 7? [1 mark] Tick (“) one box. Relative molecular mass decreases and boiling point decreases. Relative molecular mass decreases and boiling point increases. Relative molecular mass increases and boiling point decreases. Relative molecular mass increases and boiling point increases. 11 Turn over > 07 IB/M/Jun24/8462/1H 7 Do not write outside the This question is about models of the atom. box Figure 2 shows two early models of the atom. Figure 2 Model A Model B [o[3].[4] Name the models of the atom shown in Figure 2. [2 marks] Model A Model B [o[3].[2] Compare model A with the model of the atom used today. Use Figure 2. [4 marks] 08 IB/M/Jun24/8462/1H 8 Highest temperature reached in °C INIA 10 A student investigated the energy change of the reaction between zinc and copper sulfate solution. This is the method used. 2 oOo ® © NS Measure 25 cm! of copper sulfate solution into a polystyrene cup. Measure the temperature of the copper sulfate solution. Add 0.20 g of zinc powder to the copper sulfate solution. Stir the reaction mixture. Record the highest temperature reached. Repeat steps 1 to 5 with different masses of zinc powder. Figure 3 shows the results. 50 45 40 30 Figure 3 25 20 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 Mass of zinc in grams IB/M/Jun24/8462/1H Do not write outside the box 10 11 Do not write [0|4].[1] Draw two lines of best fit on Figure 3. The lines should cross. [2 marks] [o[4].[2] Explain the results shown in Figure 3. Do not refer to anomalous points. Use data from Figure 3. [4 marks] [o[4].[3| Explain why using a polystyrene cup gives more accurate results than using a glass beaker. [2 marks] [o[4].[4| Complete the ionic equation for the reaction between zinc and copper sulfate solution. Include state symbols. [2 marks] Zn(s) + Cu**(aq) > —_(_) + __(_) Turn over > 11 IB/M/Jun24/8462/1H outside the box 11 13 Do not write outside the Turn over for the next question box DO NOT WRITE/ON THIS PAGE ANSWER IN THE/SPACES PROVIDED Turn over > 4) 3 IB/M/Jun24/8462/1H 13 14 Do not write outside the This question is about ionic compounds and electrolysis. box Calcium chloride is an ionic compound. [o[5].[1| Calcium and chlorine react to produce calcium chloride. Describe what happens to calcium atoms and chlorine atoms when the ionic compound calcium chloride is formed. [4 marks] [0] 5|.[2] Solid calcium chloride cannot be electrolysed. Give one reason why. [1 mark] [0[5].[3| Name the product formed at the negative electrode when aqueous calcium chloride solution is electrolysed. [1 mark] 14 IB/M/Jun24/8462/1H 14 16 Do not write outside the [o|5].[5| A student investigated the electrolysis of green copper chromate solution. box Figure 4 shows the apparatus. Figure 4 Power supply = + vam Q TN Negative Positive electrode electrode Filter paper soaked in Drop of green copper an electrolyte solution chromate solution Figure 5 shows the results. Figure 5 Power supply = + SL val , X. Negative Positive electrode electrode Blue colour Yellow colour Filter paper soaked in an electrolyte solution INIT IB/M/Jun24/8462/1H 16 17 Do not write itside the Copper chromate solution contains the ions Cu2* and CrO4?- bx Explain the results shown in Figure 5. [3 marks] 10 Turn over for the next question Turn over > IMI IB/M/Jun24/8462/1H 17 19 Do not write outside the [o|6].[4| Write the symbols of the five metals in Table 3 in order of reactivity. box Justify your answer. [3 marks] Most reactive Least reactive Justification [o[6].[2| The voltage produced by a chemical cell depends on the concentration of the electrolyte solution. Plan an experiment to investigate how the voltage produced by a chemical cell varies with the concentration of the electrolyte solution. The following substances are available: « the metal electrodes in Table 3 ¢ 1.0 mol/dm? sodium chloride solution © pure water. [6 marks] Turn over > 1 IB/M/Jun24/8462/1H 19 20 Do not write outside the [o[6].[3| Describe how a hydrogen fuel cell produces a potential difference. box [2 marks] INT IB/M/Jun24/8462/1H 20 
