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2024 AQA GCSE COMBINED SCIENCE: TRILOGY
8464/C/1F Foundation Tier Chemistry Paper 1F
Verified Question Paper with Marking Scheme Combined.
June 2024
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.
- 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 70.
- 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 TOTAL
Do not write outside the box (^0 1). 1 What name is given to Group 1 elements? [1 mark] Tick ( ) one box. Alkali metals Halogens Noble gases (^0 1). 2 A potassium atom is very small. What is the radius of a potassium atom? [1 mark] Tick ( ) one box. 0.2 cm 0.2 mm 0.2 nm (^0 1). 3 What name is given to the number of protons in an atom? [1 mark] Tick ( ) one box. Atomic number Group number Mass number (^0 1) Potassium is in Group 1 of the periodic table.
Do not write outside the Turn over ►
Do not write outside the box Predict the melting point of potassium. [1 mark] Melting point = °C (^0 1). 6 Figure 2 shows the melting points of some Group 1 elements. Figure 2
Do not write outside the Turn over ►
Do not write outside the box 0 2 Carbon is in Group 4 of the periodic table. (^0 2). 1 Methane contains carbon and hydrogen atoms. A carbon atom has 4 electrons in the outer shell. A hydrogen atom has 1 electron in the outer shell. Complete the dot and cross diagram for a methane molecule. [2 marks]
Do not write outside the box Figure 3 represents part of the structure of graphite. Figure 3 (^0 2). 3 In graphite each carbon atom forms covalent bonds. How many covalent bonds does each carbon atom form in graphite? [1 mark] Tick (✓) one box. 1 2 3 4 (^0 2). 4 Graphite conducts electricity. Which particles carry electrical charge through graphite? [1 mark]
Do not write outside the box Figure 4 represents the structure of a fullerene. Figure 4 (^0 2). 5 Where are fullerenes used? [1 mark] Tick (✓) one box. In electronic components In self-heating cans In sports injury packs (^0 2). 6 Describe the structure of the fullerene shown in Figure 4. [2 marks] Turn over ►
Do not write outside the box (^0 3). 1 The student varied the mass of zinc. What type of variable is the mass of zinc? [1 mark] Tick (✓) one box. Control Dependent Independent Question 3 continues on the next page Turn over ►
Do not write outside the box Zinc reacts with copper sulfate solution to produce salt A and copper. The word equation for the reaction is: zinc + copper sulfate → salt A + copper (^0 3). 2 What is the name of salt A? [1 mark] (^0 3). 3 The temperature of the solution increases when zinc reacts with copper sulfate solution. Give two other observations that can be made when zinc reacts with copper sulfate solution. [2 marks] 1 2
Do not write outside the A teacher repeated the investigation using a digital thermometer.^ box Table 4 shows the results. Table 4 Mass of zinc in grams Temperature increase in °C 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. 3.0 20.4 12.9 20.2 20. (^0 3). 5 Calculate value B in Table 4. [2 marks] B = °C (^0 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? [1 mark] Range = °C to °C
Do not write outside the box (^0 3). 7 One of the results for 3.0 g of zinc is anomalous. Which result is anomalous? Suggest one reason why this result is anomalous. [2 marks] Anomalous result Reason Turn over for the next question Turn over ►
Do not write outside the box 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 (^0 4). 2 Name the separation method shown in Figure 8. [1 mark] (^0 4). 3 Explain why solid C separated from the mixture of C and D. Use Figure 8. [2 marks] Turn over ►
Do not write outside the box A student separated a mixture of three liquids, G , H and I. Figure 9 shows the apparatus. Figure 9 (^0 4). 4 Name the separation method shown in Figure 9. [1 mark]
