Partial preview of the text
Download 2024 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/1F Chemistry Paper 1F QP + Mark Scheme Act and more Exams Chemistry in PDF only on Docsity!
2024 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/1F Chemistry Paper 1F QP + 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 COMBINED SCIENCE: TRILOGY Foundation Tier Chemistry Paper 1F Friday 17 May 2024 Morning Time allowed: 1 hour 15 minutes Materials a For this paper you must have: Koy Baminele se ¢ aruler Question Mark ¢ ascientific calculator 1 « the periodic table (enclosed). 3 Instructions 3 e Use black ink or black ball-point pen. 4 e Pencil should only be used for drawing. 3 Fill in the boxes at the top of this page. e Answer all questions in the spaces provided. 6 « If you need extra space for your answer(s), use the lined pages at the end of 7 this book. Write the question number against your answer(s). 8 ¢ Do all rough work in this book. Cross through any work you do not want to be marked. TOTAL ¢ Inall calculations, show clearly how you work out your answer. Information ¢ The maximum mark for this paper is 70. e The marks for questions are shown in brackets. « You are expected to use a calculator where appropriate. e You are reminded of the need for good English and clear presentation in your answers. 64C1F0O1 8464/C/1F IB/M/Jun24/G4005/E7 Potassium is in Group 1 of the periodic table. [o|1].[4} What name is given to Group 1 elements? Tick (v) one box. Alkali metals Halogens Noble gases [o[1|.[2] A potassium atom is very small. What is the radius of a potassium atom? Tick (“) one box. 0.2cm 0.2mm 0.2nm [o[1].[3} What name is given to the number of protons in an atom? Tick (W) one box. Atomic number Group number Mass number MIN Do not write outside the box [1 mark] [1 mark] [1 mark] IB/M/Jun24/8464/C/1F 2 Do not write ‘outside the [o[1].[6] Figure 2 shows the melting points of some Group 1 elements. Box. Figure 2 180 160 140 120 Melting point 100 in°c 80 60+ 40 20 Lithium Sodium Potassium Rubidium Caesium Group 1 element Predict the melting point of potassium. [1 mark] Melting point = °C IML IBM/Jun24/8464/C/1 F 4 Do not write outside the Potassium has two isotopes. _ Table 2 shows the percentage (%) abundance of the two isotopes. Table 2 Isotope Percentage (%) abundance 38K 93 sak 7 How is the relative atomic mass (A,) of potassium calculated? [1 mark] Tick (“) one box. A= 09% 7)4 41 * 93) ~ 100 A= 89% 93)# 417) i 100 _ (39 * 41) + (93 * 7) —_ = 100 8 Turn over for the next question Turn over > 05 IB/M/Jun24/8464/C/1F 5 Do not write outside the [o[2].[2| Which diagram represents the structure of diamond? Bo [1 mark] Tick (v) one box. I—oO—-= | =I—O-—= = Question 2 continues on the next page Turn over > IMM IB/M/Jun24/8464/C/1F 7 Figure 3 represents part of the structure of graphite. Figure 3 Carbon atom [o[2].[3] In graphite each carbon atom forms covalent bonds. How many covalent bonds does each carbon atom form in graphite? [1 mark] Tick (V’) one box. 1 2 3 4 [o[2].[4| Graphite conducts electricity. Which particles carry electrical charge through graphite? [1 mark] IMA IB/M/Jun24/8464/C/1F Do not write outside the box INI 10 A student investigated the temperature change when different masses of zinc were added to copper sulfate solution. Figure 5 shows the apparatus. Figure 5 Zinc Thermometer Polystyrene cup 50cm3 copper sulfate solution This is the method used. 1. Pour 50 cm? of copper sulfate solution into a polystyrene cup. 2. Measure the starting temperature of the copper sulfate solution. 3. Add 1.0 g of zinc. 4. Stir the mixture. 5. Measure the highest temperature reached. 6. Repeat steps 1 to 5 two more times. 7. Repeat steps 1 to 6 with different masses of zinc. IB/M/Jun24/8464/C/1F Do not write outside the box 10 11 [o[3].[1} The student varied the mass of zinc. What type of variable is the mass of zinc? INI Tick (Vv) one box. Control Dependent Independent Question 3 continues on the next page [1 mark] Turn over > IB/M/Jun24/8464/C/1F Do not write outside the box 11 [o[3].[4| Figure 6 shows the highest temperature reached in one experiment. IM 13 Figure 6 °C 45 40 35 30 25 Complete Table 3. Use Figure 6. Table 3 Starting temperature in °C 21 Highest temperature reached in °C Temperature increase in °C Question 3 continues on the next page [2 marks] Turn over > IB/M/Jun24/8464/C/1F Do not write outside the box 13 14 A teacher repeated the investigation using a digital thermometer. Table 4 shows the results. Table 4 Temperature increase in °C Mass of zinc in grams Experiment 1 | Experiment 2 Experiment 3 Mean 1.0 7.8 7.3 7.7 B 2.0 13.1 13.8 13.3 13.4 3.0 20.4 12.9 20.2 20.3 [0|3].[5] Calculate value B in Table 4. [2 marks] °C [o[3].[6| The range of the results is the minimum value of temperature increase to the maximum value of temperature increase. What is the range of temperature increase for the experiment with 2.0 g of zinc? Range = °Cto °C 14 [1 mark] IB/M/Jun24/8464/C/1 F Do not write outside the box 14 [o[4][4] INIT 16 Do not write outside the Mixtures can be separated by different methods. box. Figure 7 shows the apparatus used to separate the dyes in a black ink. Figure 7 Start line Black ink Water —_| | Whatis the name of this method? [1 mark] IBM/Jun24/8464/C/1 F 16 17 Some water was added to a mixture of two solids, C and D. The mixture was stirred and then poured into the apparatus shown in Figure 8. Figure 8 Solid C Beaker Solution of D [o[4].[2] Name the separation method shown in Figure 8. [1 mark] [o[4].[3| Explain why solid C separated from the mixture of C and D. Use Figure 8. [2 marks] Turn over > IMI IB/M/Jun24/8464/C/1F Do not write outside the box 17 19 Do not write outside the [0[4].[5] Table 5 shows the boiling points of the three liquids, G, H and I. box Table 5 Liquid Boiling point in °C G 56 H 78 | 100 Which liquid collected first in the conical flask? [1 mark] Tick (W) one box. G H | [o[4].[6| Two processes occur in the apparatus shown in Figure 9. Draw one line from each description to the name of the process. [2 marks] Description Name of process Condensing Liquid changes to vapour Evaporating Vapour changes to liquid Freezing Melting Turn over > 1 IB/M/Jun24/8464/C/1F 19 INT 20 Figure 10 shows part of the apparatus shown in Figure 9. Figure 10 Water out at K , Vapour changes to liquid , Water in at J Which statement is correct? Tick (“) one box. The temperature of water at K is lower than at J. The temperature of water at K is the same as at J. The temperature of water at K is higher than at J. [1 mark] Do not write outside the box IB/M/Jun24/8464/C/1F 20 
