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Download 2024 AQA GCSE CHEMISTRY 8462/2F Paper 2 Foundation Tier Merged Question Paper + Mark Schem and more Exams Pharmaceutical Chemistry in PDF only on Docsity!
2024 AQA GCSE CHEMISTRY 8462/2F Paper 2 Foundation 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 Foundation Tier Paper 2 Tuesday 11 June 2024 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: * aruler ¢ ascientific calculator « the periodic table (enclosed). Instructions e Use black ink or black ball-point pen. e Pencil should only be used for drawing. Fill in the boxes at the top of this page. e 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. e The marks for questions are shown in brackets. e You are expected to use a calculator where appropriate. ¢ Inall 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 olol|nilolal|lalelrn|s TOTAL IB/M/Jun24/G4005/E8 8462/2F [o[1 [4] [o[1 [2] [o[1 [3] 02 Do not write outside the This question is about hydrocarbons. box A hydrocarbon has the formula CeH14 Name the two elements in a hydrocarbon. [2 marks] How many atoms are there in one molecule of CsH14? [1 mark] Tick (“) one box. 14 20 CeH14 is a member of a homologous series. What is the general formula for the homologous series that contains CeH14? [1 mark] Tick (“) one box. CrHen-2 CnHan CrHant2 IB/M/Jun24/8462/2F 2 Do not write outside the Atmospheric pollutants are formed when CesH14 undergoes incomplete combustion. box Complete the sentences. Choose answers from the box. [2 marks] ammonia carbon monoxide coal soot sulfur sulfur dioxide The solid atmospheric pollutant formed during incomplete combustion of CeH14 is The gaseous atmospheric pollutant formed during incomplete combustion of CeHi4 is [0] 1].[8] A different organic compound (C12H26) can be broken down to produce CeH14 and one other compound. Complete the equation for the reaction. [1 mark] CypHog > CeHyy + CH 04 IB/M/Jun24/8462/2F 4 [o[1].[9| The percentage by mass of each element in CeHi4 is: © 84% C © 16%H Complete Figure 2. You should: e label each element on the x-axis e plot the percentage by mass of C in CeH14 Figure 2 100 90 80 70 Percentage (%) 60 by mass of each element in CgHi4 59 40 20 10 Element MUN Do not write outside the [2 marks] box Turn over > IB/MiJun24/8462/2F 5 Do not write outside the [o[2].[2| 7000 kg of carbon dioxide are produced when 3000 kg of coal are burned. _ Calculate the mass of carbon dioxide produced when 1 kilogram of coal is burned. [2 marks] Mass of carbon dioxide = kg [o[2].[3| Complete the sentence. [1 mark] Sulfur dioxide causes an environmental effect called acid Question 2 continues on the next page Turn over > 07 IB/M/Jun24/8462/2F 7 Table 1 is repeated below. Table 1 Do not write Number of furnaces in use Mass of coal burned per minute in kilograms Mass of sulfur dioxide produced per minute in kilograms Mass of carbon dioxide produced per minute in kilograms 0 0 0 0 1 3000 100 7000 2 6000 200 14 000 3 9000 300 21 000 4 12 000 400 28 000 [o[2].[4] Figure 3 shows how the mass of sulfur dioxide produced per minute varies with the mass of coal burned per minute. Complete Figure 3. You should: e plot data from Table 1 on Figure 3 ¢ draw a line of best fit. 400 300 Mass of sulfur dioxide produced per minute in kilograms 200 100 IMA Figure 3 [3 marks] 0 2000 4000 6000 8000 10000 12000 Mass of coal burned per minute in kilograms IB/M/Jun24/8462/2F outside the box 8 10 Do not write outside the box There are no questions printed on this page DO NOT WRITE/ON THIS PAGE ANSWER IN THE/SPACES PROVIDED 10 IB/M/Jun24/8462/2F 10 [o[3}[4] 11 11 Do not write This question is about paper chromatography. A student investigated substance Y using paper chromatography. This is the method used. 1. Draw a start line in ink on a piece of chromatography paper. 2. Put spots of four different dyes, A, B, C and D, and a spot of substance Y on the start line. 3. Dip the paper into water so that the water level is below the start line. 4. Wait until the water has risen to near the top of the paper. The student's method contains a mistake in Step 1. What is the mistake in Step 1? Give one reason for your answer. [2 marks] Mistake Reason Question 3 continues on the next page Turn over > IB/M/Jun24/8462/2F outside the box 11 13 Do not write outside the [o[3|.[4] Suggest why dye D remained on the start line at the end of the investigation. _ Use Figure 4. [1 mark] [o[3].[5| The student determined that: e the distance moved by the water was 6.0 cm e the distance moved by dye A was 2.4 cm. Calculate the Rrvalue of dye A. Use the equation: _ distance moved by dye A ‘distance moved by water [2 marks] Rr = [o[3].[6| Complete the sentence. Choose the answer from the box. [1 mark] solute solution solvent The water in step 3 is used as a 9 Turn over > 13 IB/M/Jun24/8462/2F 13 14 Do not write outside the box There are no questions printed on this page DO NOT WRITE/ON THIS PAGE ANSWER IN THE/SPACES PROVIDED INI IB/M/Jun24/8462/2F 14 [o[4][2) [o[4}{3] 16 16 Do not write outside the The percentage of oxygen in the Earth’s atmosphere has increased since the Earth box was formed. This is because of photosynthesis. The word equation for the photosynthesis reaction is: carbon dioxide + water — glucose + oxygen What happened to the percentage of carbon dioxide in the atmosphere when photosynthesis began? [1 mark] Tick (“) one box. The percentage of carbon dioxide decreased. The percentage of carbon dioxide stayed the same. The percentage of carbon dioxide increased. The photosynthesis reaction takes in energy from the surroundings. Complete the sentence. Choose the answer from the box. [1 mark] carbon dioxide light water The source of the energy used in photosynthesis is IB/M/Jun24/8462/2F 16 17 Do not write outside the [o[4|.[4] Which two produce oxygen by photosynthesis? Bo [2 marks] Tick (“) two boxes. Algae Animals Plants Viruses Yeast [o[4].[5| The glucose produced during photosynthesis can form naturally occurring polymers. Which two are naturally occurring polymers that can be produced from glucose? [2 marks] Tick (W’) two boxes. Cellulose DNA Poly(propene) Protein Starch Question 4 continues on the next page Turn over > IMI IB/MiJun24/8462/2F 17 19 Bonet we outside the [o[4].[9| How many different nucleotides are present in a molecule of DNA? Bo [1 mark] Tick (v) one box. 1 2 3 4 13 Turn over for the next question Turn over > IB/MiJun24/8462/2F 19 20 Do not write outside the A student investigated the rate of the reaction of sodium thiosulfate solution with box hydrochloric acid. When sodium thiosulfate solution reacts with hydrochloric acid, the mixture becomes cloudy. Figure 6 shows the apparatus. Figure 6 Pencil cross Conical flask on paper CS Put 75 cm? of sodium thiosulfate solution in a conical flask. This is the method used. Draw a pencil cross on paper. Put the conical flask on the pencil cross. Add 15 cm® of hydrochloric acid to the contents of the conical flask. Swirl the conical flask to mix the contents and immediately start a timer. oa PF WON Stop the timer when the pencil cross is no longer visible through the reaction mixture. 7. Repeat steps 1 to 6 using different concentrations of sodium thiosulfate solution. [o[5].[1] Explain why a 50 cm? conical flask is unsuitable to use in this method. [2 marks] 20 IBiMWJun24/e462/2F = DQ) 
