Cambridge IGCSE Physical Science 0652 — 2016 Oct/Nov Paper 3 · Variant 2

This document consists of 22 printed pages and 2 blank pages. DC (ST/SG) 135975 © UCLES 2016 [Turn over Cambridge International Examinations Cambridge International General Certificate of Secondary Education * 8 7 7 1 2 2 8 4 6 1 * PHYSICAL SCIENCE 0652/32 Paper 3 (Extended) October/November 2016 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams, graphs, tables or rough working. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. A copy of the Periodic Table is printed on page 24. Electronic calculators may be used. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question.

2 0652/32/O/N/16 © UCLES 2016 1 Ticker tape is attached to a model car which moves across a bench from left to right. This is shown in Fig. 1.1. 5 6 7 8 9 10 4 3 2 1 0 ticker tape ticker timer model car Fig. 1.1 The ticker tape passes through a ticker timer, which prints a dot on the tape every 0.01 s. Fig. 1.2 shows part of the ticker tape next to a metre ruler. 25 26 27 28 29 30 31 32 33 34 35 36 cm A B C direction of car’s movement Fig. 1.2 (a) (i) The speed of the car can be calculated from the spacing of the dots. Calculate the speed of the car during the time that the section BC of the tape was made. speed = … cm / s [3] (ii) Describe the motion of the car during the time that section AB was made. …[1]

3 0652/32/O/N/16 © UCLES 2016 [Turn over (b) On Fig. 1.3, sketch a speed / time graph for the motion of the car from time A to time C. A B C time speed Fig. 1.3 [2] (c) Describe how the acceleration of an object can be found from a speed / time graph. … …[1]

4 0652/32/O/N/16 © UCLES 2016 2 Fig. 2.1 shows the apparatus used to measure the temperature change that occurs during an exothermic reaction. –10 0 10 20 30 40 50 60 70 80 90 100 110 °C 1 2 3 4 5 6 7 8 9 10 cm3 sodium hydroxide sulfuric acid thermometer Fig. 2.1 (a) Predict what will happen to the temperature of the mixture during this reaction. … …[1] (b) Explain why this reaction is exothermic. You should refer to bond breaking and bond forming in your answer. … … … …[2] (c) A student wants to increase the rate of reaction between sulfuric acid and sodium hydroxide. Suggest one way the rate of this reaction could be increased. … … … …[1]

5 0652/32/O/N/16 © UCLES 2016 [Turn over (d) Complete the symbol equation for the reaction between sulfuric acid and sodium hydroxide. H2SO4 + NaOH Na2SO4 + H2O [1] (e) Plants produce glucose and oxygen in an endothermic reaction called photosynthesis. The equation for the reaction for photosynthesis is shown below. 6H2O + 6CO2 C6H12O6 + 6O2 (i) Calculate the mass of glucose, C6H12O6, made when 1.0 g of water reacts with carbon dioxide. [Ar: C, 12; H, 1; O, 16] Show your working in the box. mass of glucose = … g [3] (ii) Outline how green plants obtain the energy needed for photosynthesis to occur. … … …[2]

6 0652/32/O/N/16 © UCLES 2016 3 Fig. 3.1 shows a crane lifting a load of bricks of weight 5000 N from the ground to a height of 8.5 m. crane bricks 8.5 m Fig. 3.1 (a) (i) Calculate the work done against gravity in lifting the bricks. Show your working. work done = … J [2] (ii) The energy transferred from the fuel to the crane’s motor is considerably greater than the work done to lift the bricks in part (i). Use this information to explain what is meant by the term efficiency. … …[1] (b) The crane takes 12 s to raise the bricks to the height of 8.5 m. Calculate the power produced in raising the bricks. Show your working and give the unit. power = … unit … [3]

7 0652/32/O/N/16 © UCLES 2016 [Turn over 4 (a) A student wants to determine the order of reactivity of four metals, A to D. She tests each metal with cold water, steam and dilute hydrochloric acid. Her results are shown in Table 4.1. Table 4.1 metal reaction with cold water reaction with steam reaction with hydrochloric acid A no yes yes B slowly yes yes C yes yes yes D no no no Deduce the order of reactivity for the metals A to D. most reactive … … … least reactive … [2]

8 0652/32/O/N/16 © UCLES 2016 (b) The diagram in Fig. 4.1 shows three uses for metals. aeroplane saucepan cutlery Fig. 4.1 Suggest three different metals that could be used to make each of the items shown above. Use ideas about the properties of the different metals to explain your choice. (i) aeroplane metal … reason … …[1] (ii) saucepan metal … reason … …[1] (iii) cutlery metal … reason … …[1]

9 0652/32/O/N/16 © UCLES 2016 [Turn over (c) Metals are good conductors of electricity. Use ideas about metallic structure and bonding to explain why metals conduct electricity. You may draw and label a diagram to help your answer. … … … …[3]

10 0652/32/O/N/16 © UCLES 2016 5 Fig. 5.1 shows a harbour and some anchored boats, viewed from above. One wavefront of the waves out at sea is labelled. wavefront harbour wall boats land direction of travel of the waves harbour entrance sea Fig. 5.1 (a) (i) Draw, on Fig. 5.1, three wavefronts after they pass through the harbour entrance. [3] (ii) Name the property of waves which is demonstrated by the behaviour of the waves after they have passed through the harbour entrance. … [1] (iii) The boats in the harbour are sheltered by the harbour wall but still move up and down. Refer to your diagram to explain why the boats move up and down. … …[1]

11 0652/32/O/N/16 © UCLES 2016 [Turn over (b) A girl stands on the harbour wall and counts the waves hitting the harbour wall. In 2 minutes she counts 6 waves hitting the wall. (i) Calculate the frequency of the waves. frequency = … Hz [2] (ii) She estimates the distance between successive crests of the waves as 25 m. State the wavelength of the waves. wavelength = … m [1] (iii) Calculate the speed at which the waves travel towards the harbour wall. speed = … m / s [2]

12 0652/32/O/N/16 © UCLES 2016 6 (a) Bauxite, haematite and malachite are three metal ores. State the metal found in malachite. …[1] (b) Fig. 6.1 shows a blast furnace used to extract iron from its ore. iron ore coke (carbon) limestone hot gases out hot air in hot air in hot gases out molten slag (impurities) out molten iron out Fig. 6.1 (i) Explain why it is possible to extract the iron metal from its ore by reacting the ore with carbon. … …[1] (ii) Suggest why heated air is forced into the blast furnace. You may use an equation to help your answer. … … … …[2]

13 0652/32/O/N/16 © UCLES 2016 [Turn over (iii) Complete the symbol equation to show the products of the reaction between iron oxide and carbon monoxide in the blast furnace. Fe2O3 + 3CO … + … [2] (c) State the role of the calcium carbonate (limestone) in the extraction of iron from haematite. … …[1] (d) Calcium carbonate (limestone) is also used in the manufacture of calcium oxide (lime). (i) Write a word equation for the reaction of calcium carbonate to form calcium oxide. …[1] (ii) State the name given to this type of reaction. …[1]

14 0652/32/O/N/16 © UCLES 2016 7 Fig. 7.1 is a diagram of a circuit in which there is a battery of e.m.f. 9.0 V, three resistors and three voltmeters A, B and C. RC RB RA V V V A B C 9.0 V Fig. 7.1 (a) Table 7.1 shows the readings on voltmeters A and B. Table 7.1 reading on voltmeter A / V reading on voltmeter B / V reading on voltmeter C / V 4.2 3.6 Complete Table 7.1 to show the reading on voltmeter C. [1] (b) (i) The current through RA is 0.40 A. Calculate the energy dissipated in RA in 5.0 minutes. Show your working and state the unit. energy = … unit … [3] (ii) Determine the current through RB and RC. current through RB = … A current through RC = … A [1]

15 0652/32/O/N/16 © UCLES 2016 [Turn over (c) Fig. 7.2 shows the same 9.0 V battery connected across two resistors in parallel. 18 Ω 6.0 Ω 9.0 V Fig. 7.2 (i) Calculate the combined resistance of the two resistors. resistance = … Ω [2] (ii) Calculate the current in the battery. current = … A [1] (iii) Calculate the charge passing through the battery in 30 seconds. charge = … C [2]

16 0652/32/O/N/16 © UCLES 2016 8 Table 8.1 shows data for the atomic radii of elements in Group II of the Periodic Table. Table 8.1 Group II element atomic radius / nm beryllium 0.125 magnesium 0.160 calcium 0.174 strontium ------ barium 0.198 (a) Suggest a value for the atomic radius of strontium. … nm [1] (b) State the number of electrons barium has in its outer electron shell. …[1] (c) Magnesium can be reacted with the Group VII element chlorine to form the ionic compound magnesium chloride. Describe the formation of ionic bonds between magnesium and chlorine. You should draw and label a diagram to help your answer. … … … … …[4]

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18 0652/32/O/N/16 © UCLES 2016 9 Fig. 9.1 shows a simple alternating current (a.c.) generator. N S direction of rotation of the coil coil axle P Q B A output Fig. 9.1 (a) Name the parts labelled P and Q in Fig 9.1. P … Q … [2] (b) Explain why an e.m.f. is induced across the section AB of the coil when the coil rotates. … … …[2]

19 0652/32/O/N/16 © UCLES 2016 [Turn over (c) (i) A resistor is connected across the generator. There is an alternating current in the resistor. Explain what is meant by the term alternating current. … …[1] (ii) Fig. 9.2 shows the screen of a cathode ray oscilloscope (c.r.o.). The output from the a.c. generator is connected to the c.r.o. Draw, on Fig. 9.2, two complete cycles of the trace seen on the screen of the oscilloscope. current time Fig. 9.2 [2]

20 0652/32/O/N/16 © UCLES 2016 10 Graphite and diamond are both forms of carbon. Table 10.1 shows some physical properties of graphite and diamond. Table 10.1 melting point / °C hardness graphite 3600 soft diamond 4000 hard Fig. 10.1 shows the structure of graphite and diamond. diamond graphite Fig. 10.1 (a) Use Table 10.1 and Fig. 10.1 to explain the following properties of graphite and diamond. (i) hardness … … … …[3] (ii) melting point … …[1]

21 0652/32/O/N/16 © UCLES 2016 (b) Carbon is one of the elements found in ethanol and ethene. Name the process used to produce ethanol from ethene. …[1] (c) Draw a diagram to show the electron arrangement in ethene, C2H4. [2]

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24 0652/32/O/N/16 © UCLES 2016 Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V VI VII VIII 3 Li lithium 7 4 Be beryllium 9 atomic number atomic symbol Key name relative atomic mass 11 Na sodium 23 12 Mg magnesium 24 19 K potassium 39 20 Ca calcium 40 37 Rb rubidium 85 38 Sr strontium 88 55 Cs caesium 133 56 Ba barium 137 87 Fr francium – 88 Ra radium – 5 B boron 11 13 Al aluminium 27 31 Ga gallium 70 49 In indium 115 81 Tl thallium 204 6 C carbon 12 14 Si silicon 28 32 Ge germanium 73 50 Sn tin 119 82 Pb lead 207 22 Ti titanium 48 40 Zr zirconium 91 72 Hf hafnium 178 104 Rf rutherfordium – 23 V vanadium 51 41 Nb niobium 93 73 Ta tantalum 181 105 Db dubnium – 24 Cr chromium 52 42 Mo molybdenum 96 74 W tungsten 184 106 Sg seaborgium – 25 Mn manganese 55 43 Tc technetium – 75 Re rhenium 186 107 Bh bohrium – 26 Fe iron 56 44 Ru ruthenium 101 76 Os osmium 190 108 Hs hassium – 27 Co cobalt 59 45 Rh rhodium 103 77 Ir iridium 192 109 Mt meitnerium – 28 Ni nickel 59 46 Pd palladium 106 78 Pt platinum 195 110 Ds darmstadtium – 29 Cu copper 64 47 Ag silver 108 79 Au gold 197 111 Rg roentgenium – 30 Zn zinc 65 48 Cd cadmium 112 80 Hg mercury 201 112 Cn copernicium – 114 Fl flerovium – 116 Lv livermorium – 7 N nitrogen 14 15 P phosphorus 31 33 As arsenic 75 51 Sb antimony 122 83 Bi bismuth 209 8 O oxygen 16 16 S sulfur 32 34 Se selenium 79 52 Te tellurium 128 84 Po polonium – 9 F fluorine 19 17 Cl chlorine 35.5 35 Br bromine 80 53 I iodine 127 85 At astatine – 10 Ne neon 20 18 Ar argon 40 36 Kr krypton 84 54 Xe xenon 131 86 Rn radon – 21 Sc scandium 45 39 Y yttrium 89 57–71 lanthanoids 89–103 actinoids 57 La lanthanum 139 89 Ac lanthanoids actinoids The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.) actinium – 58 Ce cerium 140 90 Th thorium 232 59 Pr praseodymium 141 91 Pa protactinium 231 60 Nd neodymium 144 92 U uranium 238 61 Pm promethium – 93 Np neptunium – 62 Sm samarium 150 94 Pu plutonium – 63 Eu europium 152 95 Am americium – 64 Gd gadolinium 157 96 Cm curium – 65 Tb terbium 159 97 Bk berkelium – 66 Dy dysprosium 163 98 Cf californium – 67 Ho holmium 165 99 Es einsteinium – 68 Er erbium 167 100 Fm fermium – 69 Tm thulium 169 101 Md mendelevium – 70 Yb ytterbium 173 102 No nobelium – 71 Lu lutetium 175 103 Lr lawrencium – To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series.

® IGCSE is the registered trademark of Cambridge International Examinations. This document consists of 9 printed pages. © UCLES 2016 [Turn over Cambridge International Examinations Cambridge International General Certificate of Secondary Education PHYSICAL SCIENCE 0652/32 Paper 3 Extended Theory October/November 2016 MARK SCHEME Maximum Mark: 80 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the October/November 2016 series for most Cambridge IGCSE®, Cambridge International A and AS Level components and some Cambridge O Level components.

Page 2 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 1(a)(i) (distance travelled =) 31.4 – 25.0 or 6.4 (cm) ; Use of speed = distance / time (= 6.4 / 0.04) ; 160 (cm / s) ; 3 1(a)(ii) (constant) acceleration ; 1 1(b) diagonal line from y-axis upwards to B ; horizontal line to C ; 2 1(c) gradient (of the graph) ; 1 Question Answer Marks 2(a) increase ; 1 2(b) energy released in making bonds / energy taken in to break bonds / making bonds is exothermic / breaking bonds is endothermic ; energy released (in making bonds) is greater than the energy required (to break bonds) ; 2 2(c) increase concentration / increase the temperature ; 1 2(d) H2SO4 + 2NaOH → Na2SO4 + 2H2O ; 1 2(e)(i) Mr glucose OR Mr water / 180 OR 18 ; 6 water:1 glucose ratio or divided by 6 ; 1.67 / 1.66(66...) / 1.7 ; 3

Page 3 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 2e(ii) (sun)light / energy from the sun ; (takes place in) chloroplasts / (absorbed by) chlorophyll ; 2 Question Answer Marks 3(a)(i) Use of (work done =) force × distance (= 8.5 × 5000) ; = 4.25 × 104 / 42 500 (J) ; 2 3(a)(ii) (efficiency is the ratio) of the (useful) work done or work done by motor / useful power output / useful energy output to the (total) energy input or work input or power input ; 1 3b use of (power =) work done ÷ time taken (= 4.25 × 104 / 12) ; 3.5 × 103 / 3 500 / 3542 ; watts / W / J s–1 ; 3

Page 4 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 4(a) most reactive: C B A least reactive: D ;; 2 Common to all 4(b) mark is for the reason NOT the choice of metal 4(b)(i) aeroplane: (aluminium) low density / resist corrosion ; 1 4(b)(ii) saucepan: (copper / (stainless) steel / aluminium / (cast) iron) good conductor (of heat) / resistant to corrosion / no reaction (with food/water) ; 1 4(b)(iii) cutlery: ((stainless) steel / silver / gold) resistant to corrosion / malleable / shiny / hard / non-toxic / unreactive (with food/water) ; 1 4(c) any 3 from: lattice / giant structure / positive (cat)ions ; delocalised or free / sea / cloud of electron(s) ; (electrons) can move or are mobile ; (electrons) carry a (–) charge ; max 3 5(a)(i) waves curved with convex shape at front ; three wavefronts with arc centred on the centre of the harbour entrance ; wavelengths / gap between first and second wave equal to incident wavelength / gap by eye ; 3 5(a)(ii) diffraction ; 1

Page 5 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 5(a)(iii) waves spread into the sheltered area or to where the boats are ; 1 5(b)(i) use of frequency = number of waves ÷ time (= 6 ÷ 60) ; 0.05 (Hz) ; 2 5(b)(ii) 25 (m) ; 1 5(b)(iii) use of speed = wavelength × frequency (= 25 × 0.05) ; 1.25 (m/s) ; 2

Page 6 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 6(a) copper ; 1 6(b)(i) iron (or it) is less reactive than carbon / iron is lower than carbon in reactivity series ; 1 6b(ii) Any two from: burns the coke or carbon / forms carbon monoxide ; carbon monoxide reduces the iron ore ; C + O2 → CO2 ; as reaction is exothermic ; (increased temperature) increases rate of reaction ; max 2 6b(iii) (Fe2O3 + 3CO) → 2Fe + 3CO2 ; 2 6(c) removes or reacts (acidic) impurities / forms slag / forms calcium silicate / reacts with SiO2 ; 1 6(d)(i) calcium carbonate → calcium oxide + carbon dioxide ; 1 6d(ii) (thermal) decomposition ; 1

Page 7 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 7(a) 1.2 (V) ; 1 7(b)(i) use of W = V / t (= 4.2 × 0.40 × 5 × 60) ; 500 / 504 ; joule / J ; 3 7(b)(ii) RB = 0.40 and RC = 0.40 ; 1 7(c)(i) Use of 1 / R = 1 / R1 + 1 / R2 (1 / 18 + 1 / 6 = 4 / 18) ; R = 4.5 (Ω) ; 2 7(c)(ii) (I = V / R = 9 / 4.5 =) 2 (A) ; 1 7(c)(iii) use of Q = I t (= 2 × 30) ; 60 (C) ; 2

Page 8 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 8(a) value between 0.176 and 0.196 ; 1 8(b) 2 ; 1 8(c) Any four from: one magnesium and two chlorines ; eight electrons in chlorine outer shell ; one electron gained by chlorine from magnesium ; eight or no electrons in magnesium outer shell ; correct charges on ions / Mg2+ and Cl − ; max 4 Question Answer Marks 9(a) P: slip ring ; Q: brush ; 2 9(b) AB moves in the magnetic field ; cutting the (magnetic) field (at right angles) ; 2 9(c)(i) (current continually) changes direction ; 1 9(c)(ii) same maxima and same minima throughout ; varying signal and constant frequency ; 2

Page 9 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2016 0652 32 © UCLES 2016 Question Answer Marks 10(a)(i) hardness: (both) have (strong) covalent bonds ; one from diamond: (diamond is harder than graphite) each carbon (atom) in diamond is joined to 4 others ; forms a giant (covalent) structure or giant molecule ; one from graphite: in graphite each carbon atom joined to 3 other carbon atoms ; arranged in layers / 2-dimensional giant structure / layers slide over each other ; weak forces between layers ; max 3 10(a)(ii) melting point: (diamond and graphite have similar high melting point) both have strong (covalent) bonds which need to be broken / a lot of energy needed to break (strong covalent) bonds or because the bonds are strong ; 1 10(b) (catalytic) addition ; 1 10(c) double bond between two carbons ; rest of molecule correct ; 2