AQA GCSE CHEMISTRY 8462/1F Paper 1 Foundation Tier Version: 1.0 Final *JUN2384621F01* IB/M/Jun23/E11 8462/1F QUESTION PAPER & MARKING SCHEME/ [MERGED]

AQA GCSE CHEMISTRY 8462/1F Paper 1 Foundation Tier Version: 1.0 Final *JUN2384621F01* IB/M/Jun23/E11 8462/1F For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 11 TOTAL Monday 22 May 2023 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. • 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 Foundation Tier Paper 1 F 2 *02* IB/M/Jun23/8462/1F Do not write outside the 0 1 box This question is about atoms. Atoms contain three types of particle: • electrons • neutrons • protons. 0 1 . 1 Which particle has no electrical charge? [1 mark] Tick () one box. Electron Neutron Proton 0 1 . 2 Which particles have the same relative mass? [1 mark] Tick () one box. An electron and a neutron An electron and a proton A neutron and a proton 0 1 . 3 The formula of a compound is N2O How many of each type of atom are in one molecule of N2O? [2 marks] Nitrogen Oxygen 3 *03* Turn over ► IB/M/Jun23/8462/1F Do not write outside the box 9 An atom of element Z contains: • 3 electrons • 4 neutrons • 3 protons. 0 1 . 4 Give the name of element Z. Use the periodic table. [1 mark] 0 1 . 5 Complete Figure 1 to show the position of the particles in an atom of element Z. Use the symbols: = electron = neutron = proton [4 marks] Figure 1 Turn over for the next question 4 *04* IB/M/Jun23/8462/1F Do not write outside the There are no questions printed on this page box DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED 5 *05* Turn over ► IB/M/Jun23/8462/1F Do not write outside the 0 2 box This question is about acids and alkalis. 0 2 . 1 Acids and alkalis are substances that produce ions in aqueous solution. Draw one line from each substance to the ion always produced by that substance in aqueous solution. [2 marks] Substance Ion always produced in aqueous solution Acid Alkali Cl − H+ Na+ OH− SO4 2− 0 2 . 2 What type of aqueous solution has a pH of 11? [1 mark] Tick () one box. Acidic Alkaline Neutral Question 2 continues on the next page 6 *06* IB/M/Jun23/8462/1F Do not write outside the A student determined the reacting volumes of hydrochloric acid and box sodium hydroxide solution by titration. This is the method used. 1. Measure 25.0 cm3 of the sodium hydroxide solution. 2. Add the sodium hydroxide solution to a conical flask. 3. Add 3 drops of indicator to the sodium hydroxide solution. 4. Add the hydrochloric acid drop by drop until the indicator changes colour. 5. Record the volume of the hydrochloric acid added. 6. Repeat steps 1 to 5 three more times. 0 2 . 3 Which piece of equipment should be used to measure 25.0 cm3 of the sodium hydroxide solution in step 1? [1 mark] Tick () one box. Beaker Pipette Ruler 0 2 . 4 Which piece of equipment should be used to add the hydrochloric acid drop by drop in step 4? [1 mark] Tick () one box. Balance Burette Measuring cylinder 7 *07* Turn over ► IB/M/Jun23/8462/1F Do not write outside the box 10 Table 1 shows the results. Table 1 Trial 1 2 3 4 Volume of hydrochloric acid added in cm3 24.3 24.5 28.1 24.4 0 2 . 5 Which is the anomalous result in Table 1? [1 mark] Trial 1 Trial 2 Trial 3 Trial 4 0 2 . 6 Suggest one reason for the anomalous result in Table 1. [1 mark] 0 2 . 7 The student used a solution of sodium hydroxide of concentration 4.00 g/dm3 . Calculate the mass of sodium hydroxide in 25.0 cm3 of this solution. 1 dm3 = 1000 cm3 [3 marks] Mass = g 8 *08* IB/M/Jun23/8462/1F Do not write outside the 0 3 This question is about carbon. box 0 3 . 1 Which type of substance is carbon? [1 mark] Tick () one box. Compound Element Mixture 0 3 . 2 Carbon has isotopes with mass numbers 12, 13 and 14. Complete the sentences. Choose answers from the box. [2 marks] electrons ions molecules neutrons protons The isotopes of carbon have the same number of . The isotopes of carbon have a different number of . 9 *09* Turn over ► IB/M/Jun23/8462/1F Do not write outside the 0 3 box . 3 12 g of carbon contains 6.02 ×1023 atoms. Which expression is used to calculate the mass of one atom of carbon? [1 mark] Tick () one box. 12 6.02 × 1023 6.02 × 1023 12 12 × 6.02 × 1023 0 3 . 4 Figure 2 shows diagrams that represent different form