Cambridge IGCSE Physical Science 0652 — 2013 Oct/Nov Paper 3 · Variant 2

This document consists of 20 printed pages. IB13 11_0652_32/RP © UCLES 2013 [Turn over *6173646290* UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education PHYSICAL SCIENCE 0652/32 Paper 3 (Extended) October/November 2013 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 a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. Electronic calculators may be used. You may lose marks if you do not show your working or if you do not use appropriate units. A copy of the Periodic Table is printed on page 20. 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 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 1 A metre rule is clamped to a ramp. Fig. 1.1 shows the experimental set up. 0 10 20 30 40 50 60 70 80 90 100 Fig. 1.1 • The ramp is tilted and a toy car is held at the top of the ramp. • The car is given a gentle push and it moves down the ramp. • The positions of the car after successive time intervals of 0.20 s are shown. (a) (i) Read off the positions of the front of the car after each time interval. Record the values, to the nearest centimetre, in Table 1.1. Calculate the total distance travelled after each time interval and complete the table. Table 1.1 time / s 0.0 0.20 0.40 0.60 0.80 position / cm 99 total distance travelled / cm 0 [2]

3 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use (ii) On the grid in Fig. 1.2, draw a distance / time graph for the car’s journey. 100 80 60 40 20 0 0 0.2 0.4 0.6 time / s 0.8 distance / cm Fig. 1.2 [2]

4 © UCLES 2013 0652/32/O/N/13 For Examiner's Use (b) The graph in Fig. 1.3 shows a speed / time graph for the car on a similar journey. 0 0.2 0.4 0.6 time / s 0.8 200 150 100 50 0 speed cm / s Fig. 1.3 Use the graph to determine the acceleration of the car. Do your working in the box. acceleration = unit [3]

5 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use 2 (a) Table 2.1 shows the number of sub-atomic particles in several different atoms and ions. Complete Table 2.1 by writing in the symbol of each atom or ion. Include the charge on each ion. The first one has been completed for you. Table 2.1 number of protons number of electrons number of neutrons symbol 3 3 4 Li 9 10 10 11 10 12 15 15 16 [2] (b) The symbol for an iron(III) ion is Fe3+. The symbol for an oxide ion is O2−. Deduce the formula for the compound iron(III) oxide. [1]

6 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 3 Table 3.1 gives information about four elements in Group 0 (noble gases) of the Periodic Table. Table 3.1 element electron arrangement density of gas in kg / m3 melting point / °C boiling point / °C helium 2 0.17 −272 −269 neon 2.8 0.84 −248 −246 argon 2.8.8 1.67 −186 krypton 2.8.18.8 3.50 −157 −152 (a) Describe the trend in boiling point down Table 3.1, from helium to krypton. [1] (b) Predict the melting point of argon. °C [1] (c) A balloon is filled with one of the noble gases. The material of the balloon increases the average density of the filled balloon by 0.45 kg / m3. The density of air at 25 °C is 1.18 kg / m3. In order for the balloon to rise in air, its average density must be less than that of air. State which of the noble gases could be used to fill this balloon so that it will rise in air at 25 °C and explain your answer. noble gas explanation [2]

7 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use 4 Fig. 4.1 shows the structure of a thermocouple thermometer. junction 1 wire 1 junction 2 wire 2 meter wire 3 Fig. 4.1 (a) Wires 2 and 3 are made from the same material. Suggest suitable materials from which the three wires could be made. wire 1 wires 2 and 3 [2] (b) Junction 1 is placed in a cup of warm water and junction 2 is placed in melting ice. Describe and explain what is observed. [3] (c) An engineer uses a thermocouple to investigate the temperature at one point in a jet engine. He takes measurements from the time that the engine is first switched on until it reaches a steady temperature. Give two reasons why a thermocouple is a suitable thermometer to use. Give an explanation for one of your reasons. reason 1 reason 2 explanation [3]

8 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 5 Fig. 5.1 shows the arrangement of atoms in two forms of carbon, diamond and graphite. graphite diamond Fig. 5.1 Table 5.1 gives information about some of the properties of diamond and graphite. Table 5.1 diamond graphite hardness 10 2 melting point / °C 4227 3927 electrical conductivity low high (a) Use ideas about the structure of diamond and graphite to explain the (i) difference in hardness, [2] (ii) difference in electrical conductivity, [2] (iii) high melting points. [2]

9 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use (b) Carbon compounds are the basis of organic chemistry. An example is the compound methane, CH4. Methane has covalent bonding. At room temperature, methane is a gas. Explain why methane has a very low boiling point. [2] (c) Plants make carbon compounds by the process of photosynthesis. In this process plants react carbon dioxide with water to make glucose, C6H12O6, and oxygen, O2. (i) Write a balanced equation for photosynthesis. [2] (ii) Photosynthesis is an endothermic process. Explain how plants obtain the energy for photosynthesis. [2]

10 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 6 Air traffic control uses radar ranging to track an aircraft. A radar transmitter sends out a pulse of microwaves. The waves reflect back from an aeroplane and are detected by the radar station. Fig. 6.1 shows how the system works. air traffic control radio transmitter and detector waves from the transmitter aeroplane reflected waves Fig. 6.1 (a) Fig. 6.2 shows the screen of a cathode ray oscilloscope (c.r.o.) at air traffic control. transmitted pulse reflected pulse Fig. 6.2 The time–base of the c.r.o. is set at 0.05 ms / division. (i) Suggest why the reflected pulse has a smaller amplitude than the transmitted pulse. [1] (ii) Calculate the time between the emission and detection of the pulse. time = s [1]

11 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use (iii) Calculate the distance of the aeroplane from the transmitter. (speed of microwaves = 3
108 m / s) distance = unit [2] (b) (i) The microwaves used have a wavelength of 7.5 mm. Calculate the frequency of the microwaves. frequency = unit [2] (ii) State one other use of microwaves. [1]

12 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 7 Marble chips are made of calcium carbonate. They react with hydrochloric acid. CaCO3 + 2HCl
CaCl2 + CO2 + H2O A student uses the apparatus in Fig. 7.1 to measure the carbon dioxide given off in this reaction. gas syringe marble chips 50 cm3 hydrochloric acid Fig. 7.1 The results of this investigation are shown in Table 7.1. Table 7.1 time / s 0 20 40 60 80 100 120 volume of carbon dioxide / cm3 0 15 27 35 39 40 40 (a) (i) Plot the results on the grid. [2] (ii) Draw a best-fit curve. [1] 40 30 20 10 0 0 20 40 60 time / s 80 100 120 volume of carbon dioxide / cm3

13 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use (b) State how the student could test the gas to show that it is carbon dioxide. test result [2] (c) (i) After 100 seconds, no more carbon dioxide was given off. Some of the marble chips remained. Explain why no more carbon dioxide was given off. [1] (ii) The volume of carbon dioxide was measured at room temperature and pressure. Calculate the mass of calcium carbonate that reacted with the hydrochloric acid. [relative atomic masses, Ar : C, 12; O, 16; Ca, 40] The volume of one mole of any gas is 24 dm3 at room temperature and pressure. Show your working in the box. mass of calcium carbonate = g [3] (d) The student repeated the experiment using the same mass of powdered calcium carbonate instead of marble chips. Sketch on the grid in (a) the results you would expect from this second experiment.

14 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 8 Fig. 8.1 shows the use of transformers in the transmission of electrical energy. power station homes transformer 1 transformer 2 power lines Fig. 8.1 (a) (i) State the function of each of the two transformers. transformer 1 transformer 2 [2] (ii) Explain why electrical energy is transmitted at very high voltages. [2]

15 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use (b) Power lines can be made from several strands of copper, with a strand of steel, as shown in Fig. 8.2. insulation copper strands steel strand Fig. 8.2 (i) Describe the metallic structure of copper and explain how it makes copper a suitable material for the transmission of electricity. [4] (ii) Suggest why a steel strand is included in the power-line. [1]

16 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 9 Ethene is a hydrocarbon with the formula C2H4. (a) Draw a dot and cross diagram to show the bonding in a molecule of ethene. Include only the outer shell electrons of carbon and hydrogen. [2] (b) Ethene can be made from long chain alkanes obtained from crude oil. (i) State the name given to the process used to produce ethene from long chain alkanes. [1] (ii) State the two conditions needed for the process. 1 2 [2]

17 © UCLES 2013 0652/32/O/N/13 [Turn over For Examiner's Use (c) Ethene is reacted with steam to produce ethanol. C2H4 + H2O
C2H5OH (i) Calculate the mass of ethanol that can be made from each kg of ethene. [relative atomic masses, Ar : H, 1; C, 12; O, 16] Show your working in the box. mass of ethanol = kg [2] (ii) Name and describe another process that can be used to make ethanol. [3]

18 © UCLES 2013 0652/32/O/N/13 For Examiner's Use 10 Nuclear fusion takes place in the sun. (a) (i) Explain what is meant by nuclear fusion. [2] (ii) Energy released as radiation from the sun reaches the earth. Name two types of this radiation. 1 2 [2] (b) In a fusion reaction between two deuterium nuclei ( 2 1H), each of mass 3.3434
10-27 kg, the total mass of the products of this reaction is 6.6810
10-27 kg. (i) Show that the mass lost during this reaction is 5.8
10-30 kg. Do your working in this box. [1] (ii) Calculate the energy released in this reaction. Do your working in this box. energy released = J [2]

19 © UCLES 2013 0652/32/O/N/13 For Examiner's Use (iii) The output from the sun is approximately 4 x 1026 W. Estimate the number of fusion reactions which occur each second. You may assume that this is the only type of fusion reaction that occurs in the Sun. Do your working in this box. number of reactions per second = [2]

20 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2013 0652/32/O/N/13 Group 140 Ce Cerium 58 141 Pr Praseodymium 59 144 Nd Neodymium 60 Pm Promethium 61 150 Sm Samarium 62 152 Eu Europium 63 157 Gd Gadolinium 64 159 Tb Terbium 65 162 Dy Dysprosium 66 165 Ho Holmium 67 167 Er Erbium 68 169 Tm Thulium 69 173 Yb Ytterbium 70 175 Lu Lutetium 71 232 Th Thorium 90 Pa Protactinium 91 238 U Uranium 92 Np Neptunium 93 Pu Plutonium 94 Am Americium 95 Cm Curium 96 Bk Berkelium 97 Cf Californium 98 Es Einsteinium 99 Fm Fermium 100 Md Mendelevium 101 No Nobelium 102 Lr Lawrencium 103 1 H Hydrogen 1 7 Li Lithium 3 23 Na Sodium 11 24 Mg Magnesium 12 40 Ca Calcium 20 45 Sc Scandium 21 48 Ti Titanium 22 51 V Vanadium 23 52 Cr Chromium 24 55 Mn Manganese 25 56 Fe Iron 26 59 Co Cobalt 27 59 Ni Nickel 28 64 Cu Copper 29 65 Zn Zinc 30 70 Ga Gallium 31 27 Al Aluminium 13 11 B Boron 5 12 C Carbon 6 14 N Nitrogen 7 16 O Oxygen 8 19 F Fluorine 9 28 Si Silicon 14 31 P Phosphorus 15 32 S Sulfur 16 35.5 Cl Chlorine 17 40 Ar Argon 18 20 Ne Neon 10 4 He Helium 2 73 Ge Germanium 32 75 As Arsenic 33 79 Se Selenium 34 80 Br Bromine 35 84 Kr Krypton 36 39 K Potassium 19 88 Sr Strontium 38 89 Y Yttrium 39 91 Zr Zirconium 40 93 Nb Niobium 41 96 Mo Molybdenum 42 Tc Technetium 43 101 Ru Ruthenium 44 103 Rh Rhodium 45 106 Pd Palladium 46 108 Ag Silver 47 112 Cd Cadmium 48 115 In Indium 49 119 Sn Tin 50 122 Sb Antimony 51 128 Te Tellurium 52 127 I Iodine 53 131 Xe Xenon 54 137 Ba Barium 56 139 La Lanthanum 57 * 178 Hf Hafnium 72 181 Ta Tantalum 73 184 W Tungsten 74 186 Re Rhenium 75 190 Os Osmium 76 192 Ir Iridium 77 195 Pt Platinum 78 197 Au Gold 79 201 Hg Mercury 80 204 Tl Thallium 81 207 Pb Lead 82 209 Bi Bismuth 83 Po Polonium 84 At Astatine 85 Rn Radon 86 Fr Francium 87 227 Ac Actinium 89 9 Be Beryllium 4 I II III IV V VI VII 0 85 Rb Rubidium 37 133 Cs Caesium 55 226 Ra Radium 88 The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.). a X b a = relative atomic mass X = atomic symbol b = proton (atomic) number Key *58-71 Lanthanoid series 90-103 Actinoid series DATA SHEET The Periodic Table of the Elements

CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education MARK SCHEME for the October/November 2013 series 0652 PHYSICAL SCIENCE 0652/32 Paper 3 (Extended Theory), maximum raw mark 80 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 2013 series for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level components and some Ordinary Level components.

Page 2 Mark Scheme Syllabus Paper IGCSE – October/November 2013 0652 32 © Cambridge International Examinations 2013 1 (a) (i) 87, 67, 39, 3 – all correct ±1 cm ; [1] 12, 32, 60, 96 – all correct (ecf) ; [1] [2] (ii) All points plotted correctly to within ½ square including (0,0), but allow if line goes thro (0,0) ; [1] clear smooth curve (accept best fit straight line if distances = 12, 20, 48 etc.) ; [1] [2] (b) Choice of any two correct points e.g. (10,0) and (175,0.80) ; [1] Use of gradient (176 –10) / (0.80 – 0) or use of a = (v – u) / t ; [1] 210 cm / s2 or 2.1 m / s2 (accept 206 and ignore sig. figs) ; [1] [3] (Answer mark can only be scored if answer lies between 200 and 210) [Total 7] 2 (a) F , Na+ , P [2] (3 correct symbols 1, 3 correct charges 1) ; (b) Fe2O3 ; (accept Fe3+ 2 O2+ 3) [1] [Total 3] 3 (a) boiling point increases (down the group / with atomic number) ; [1] (b) accept any number between –170 and –240 (actually –189) [1] (c) helium or neon(no mark) recognition only helium and / or neon are less dense than air ; [1] comment that average density of He balloon less than density of air OR average density of Ne filled balloon is greater than air ; [1] [2] [Total 4] 4 (a) Wire 1 named metal, (not Group 1 nor Hg) ; [1] Wire 2 and 3 different metal ; [1] [2] (b) Needle moves across dial or clear the reading changes (not accept flicks up then down); [1] e,m.f. / voltage produced (accept current) ; [1] due to junctions are at a different temperatures ; [+1] [3] (c) follows rapidly changing temperature ; measures high temperature (ignore ref to low temp or wide range) ; measures temperature at a point ; operator remote from thermometer / can be linked to computer ; ANY 2 clear link to specific task (e.g. temperature very high in engine) ; [+1] [3] [Total 8]

Page 3 Mark Scheme Syllabus Paper IGCSE – October/November 2013 0652 32 © Cambridge International Examinations 2013 5 (a) (i) diamond strong / covalent bonds or bonds in all directions ; [1] graphite has layers which slide / weak bonds between layers ; [1] [2] (ii) diamond has no free electrons and / or graphite has free electrons ; [1] in graphite electrons are between layers and / or in diamond all electrons involved in (strong) bonding ; [1] [2] (iii) recognition of covalent / strong bonds (so similar mp) ; [1] large amount of energy needed to separate atoms joined by covalent bonds ; [+1] [2] (Do not allow either mark if the candidate states that graphite has a much lower melting point / has much weaker bonds than diamond) (b) methane has weak forces between molecules ; [1] little energy is needed to separate the molecules ; [1] [2] (c) (i) 6CO2 + 6H2O
C6H12O6 + 6O2 one mark for formulae ; one mark for balance ; [2] (ii) energy carried by e.m. radiation ; [1] absorbed by the plant ; [1] [2] [Total 12] 6 (a) (i) Only a fraction of incident wave is reflected / wave spreads out etc. ; [1] (ii) 4 ½ squares × 0.05 × 10–3 = 2.25 × 10–4 s (0.000225 s) ; [1] (iii) distance = ½ × 3 × 108 × 2.25 × 10–4 ; [1] = 34 000 m (accept 33750 m) ; [1] [2] (1c if ½ missed leading to 68 000 m) ; (b) (i) Use of c = fλ (→ f = 3 × 108 / 7.5 × 10–3) ; [1] f = 4.0 × 1010 Hz ; [1] [2] (ii) Mobile phone communication / cooking / uhf radio communication etc. ; [1] [1] Note: Penalise power of ten error once only in the whole question. [Total 7] 7 (a) (i) All points, including (0,0) plotted to within one small square ; [2] (one mark if one point only is missing.incorrect) (ii) smooth curve within one small square of each point ; [1] (b) (bubble through) lime water ; [1] turns cloudy / milky ; [1] [2]

Page 4 Mark Scheme Syllabus Paper IGCSE – October/November 2013 0652 32 © Cambridge International Examinations 2013 (c) (i) all of the hydrochloric acid had reacted ; [1] (ii) RFM CaCO3 = 100 ; [1] number of moles = 40 / 24 × 103 ; [1] (ignore power of ten for this mark, but not carry forward) = 0.17 g ; [1] [3] (d) line that is steeper than original and starts from (0,0) (to the left of original line) ; [1] and levels at 40 cm3 (same as original line) ; [1] [2] [Total 11] 8 (a) (i) Transformer 1 step up / increases the voltage (for transmission) ; [1] Transformer 2 step down / decreases the voltage (for homes) ; [1] [2] (accept in correct reference to decrease / increase of current) (give 1c mark if both ‘step up transformer and ‘step down’ are correct) (ii) Less energy loss (in power lines) ; [1] reference to lower current for same power ; [1] [2] (b) (i) good conductor ; [1] lattice of positive ions (not accept if +ve ions move) ; [1] in a sea of electrons ; [1] electrons free to move ; [1] [4] (ii) Reference to malleability of copper or increase strength of cable ; [1] [1] (Zero for reference to alloying) ; [Total 9] 9 (a) diagram showing four shared electrons between two carbon atoms and 8 electrons around the carbons ; [1] diagram showing two hydrogen atoms for each carbon atom, each sharing two electrons with the carbon atom ; [1] [2] (b) (i) cracking (accept thermal decomposition) ; [1] (ii) high temperature (not accept heat) ; [1] catalyst ; [1] [2] (c) (i) RFM C2H4 = 28 and RFM C2H5OH = 46 ; [1] mass of ethanol = 46 / 28 (= 1.6 kg ); [1] [2] (ii) fermentation ; [1] yeast ; [1] added to sugar (allow source of sugar e.g. grapes) ; [1] [3] (not allow 2nd and 3rd marks if the yeast is killed by high temperature, lose one mark if in the presence of oxygen) [Total 10]

Page 5 Mark Scheme Syllabus Paper IGCSE – October/November 2013 0652 32 © Cambridge International Examinations 2013 10 (a) (i) The joining together of two nuclei ; [1] extra detail (e.g. the release of energy, small (light) nuclei, high energy collision) ; [+1] [2] (ii) radio waves microwaves thermal (Heat), IR U.V. X-ray γ-rays visible radiation / light neutrinos / neutrons ; ANY 2 [2] (b) (i) ((3.3434 × 2) – 6.6810) × 10–27 = 0.0058 × 10–27 kg = 5.8 × 10–30 kg ; [1] [1] (ii) E = mc2 = (5.8 × 10–30 × (3 × 108)2) (Formula on its own gains the mark) ; [1] = 5.2 × 10–13 J ; [1] [2] (iii) number of reactions / s = power / energy of each reaction = 4 x 1026 / 5.22 × 10–13 ; [1] = 7.67 × 1038 (s–1) ; [1] [2] Note: Penalise power of ten error once only in the whole question. [Total 9]