Cambridge IGCSE Physical Science 0652 — 2010 Oct/Nov Paper 2 · Variant 1

This document consists of 17 printed pages and 3 blank pages. IB10 11_0652_02/5RP © UCLES 2010 [Turn over *5994366484* For Examiner's Use 1 2 3 4 5 6 7 8 9 10 11 12 13 Total UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education PHYSICAL SCIENCE 0652/02 Paper 2 (Core) October/November 2010 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 soft pencil for any diagrams, graphs, tables or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. 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 2010 0652/02/O/N/10 For Examiner's Use 1 Copper is extracted from malachite, an ore containing copper carbonate, CuCO3. (a) Calculate the relative formula mass of copper carbonate. relative formula mass [2] (b) Heating copper carbonate produces copper(II) oxide, CuO, and carbon dioxide. Write a balanced equation for this reaction. [1] (c) Heating copper carbonate with carbon (charcoal) produces copper. The equation for this reaction is: 2CuCO3 + C → 2Cu + 3CO2 (i) Describe how you could show that carbon dioxide has been given off. [2] (ii) The copper is formed as a pinkish brown solid. State how you could show that it is a metal. [1]

3 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use 2 Fig. 2.1 shows two conducting spheres. Sphere B is connected to earth through a sensitive ammeter. Sphere A has a very large positive charge on it. When sphere B is brought near to sphere A, a spark jumps between the two spheres and the ammeter needle moves rapidly up the scale and then back to zero. sphere A insulating stand sphere B A safety resistor 50 000 Ω earth Fig. 2.1 (a) (i) Explain why the ammeter needle moves. [2] (b) The current through the ammeter is 0.0012 mA. Calculate the potential difference across the safety resistor. potential difference = [3]

4 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 3 Fig. 3.1 shows a side view of a shallow pool. A C B movement of the waves Fig. 3.1 Some waves move across the surface of the water. (a) (i) Mark on the diagram, between A and B, one wavelength of the waves. [1] (ii) Explain why the wavelength of the waves changes as the waves go across the pool from B to C. [2] (b) In 4.0 s a boy counts 18 waves hitting the side of the pool. Calculate the frequency of the waves. frequency = [2]

5 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use (c) When the pool is perfectly calm, a boy observes that an image of a lamp is formed as shown in Fig 3.2. boy lamp image Fig. 3.2 (i) On Fig. 3.2, draw a ray from the lamp to the boy’s eye to show how the image is formed. [2] (ii) The image formed is virtual. Explain what is meant by a virtual image. [1]

6 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 4 (a) (i) Name the acid which is reacted with zinc to make zinc chloride. [1] (ii) Name the gas formed during the reaction. [1] (iii) Complete and label Fig. 4.1 to show how a sample of the gas, produced in this reaction, could be collected. acid zinc granules Fig. 4.1 [2] (b) Calculate the mass of zinc in 272 g of zinc chloride, ZnCl2. [relative atomic masses, Ar : Zn, 65; Cl , 35.5] mass of zinc g [2]

7 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use 5 A student measures the density of sea water. (a) (i) Name two pieces of apparatus he might use. 1. 2. [2] (ii) State the measurements he makes. [2] (iii) Explain how he uses his results to find the density of sea water. [2] (b) A beaker contains 280 g of sea water which has a density of 1.12 g / cm3. Calculate the volume of sea water in the beaker. volume = cm3 [2]

8 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 6 Cora has a test-tube containing molten naphthalene. She allows the naphthalene to cool recording the temperature every 10 s. Fig. 6.1 shows the graph she plotted from her readings. 0 20 40 60 80 100 120 140 160 180 100 80 60 40 20 0 temperature / °C time / s Fig. 6.1 (a) Explain why the results produce a graph with a flat section between 30 s and 100 s. [2] (b) It is a very hot day so Cora and her brother decide to go to the beach. Cora takes a bottle of frozen water whose temperature is 0 °C. Paul takes a bottle of liquid water at the same temperature. After a couple of hours Paul’s water is warm and not nice to drink, but Cora’s is still very cold. Using information from the experiment in (a), explain the difference in temperature of the two bottles of water. [3]

9 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use 7 (a) Give the name and formula of the gas formed when sulfur burns in air. name formula [2] (b) Explain the consequences of releasing this gas into the atmosphere. [2] 8 Complete Table 8.1 which is about three elements in the second period of the Periodic Table. Table 8.1 element number of electrons in an atom charge on an ion sodium ……………………. …………………. ………………….. 13 ………………… ………………….. ……………………. -1 [6]

10 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 9 Fig. 9.1 shows a magnetic table football game. The players are moved by placing controllers under the pitch and moving them around. The dark coloured controller attracts only the dark coloured players and the light coloured controller attracts only the light coloured players. thin plastic pitch controllers magnets Fig. 9.1 Fig. 9.2 shows further detail of the dark coloured controller. north seeking pole south seeking pole Fig. 9.2 (a) (i) State what must be placed in the base of the dark players in order for them to be attracted by the dark coloured controller and repelled by the light coloured controller. [1] (ii) Fill in the spaces to label Fig. 9.3 to show the polarity of the magnet in the light coloured controller. … … Fig. 9.3 [1]

11 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use (b) Ian decides to play a trick on his brother and demagnetises the light coloured controller. Fig. 9.4 shows some of the apparatus he uses. solenoid leads controller variable resistor Fig. 9.4 (i) Name the other piece of apparatus that Ian requires. [1] (ii) Describe the procedure that Ian uses to demagnetise the light coloured controller. You should include a circuit diagram in your answer. circuit diagram [3] (iii) Describe how the players will now behave when the light coloured controller is brought up to them. dark player light player [1]

12 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 10 Hydrogen, H2, and ethanol, C2H5OH, can be used instead of some fossil fuels. (a) Complete Table 10.1 to give an advantage and a disadvantage of using hydrogen and ethanol as fuels. Table 10.1 fuel advantage disadvantage hydrogen ethanol [4] (b) (i) Name a substance formed from the burning of both hydrogen and ethanol in air. [1] (ii) Name the process used to make ethanol from sugar. [1]

13 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use 11 (a) Explain the difference in structure between an alkane and an alkene. [2] (b) Name the alkane and the alkene each of which have two carbon atoms in a molecule. alkane alkene [2] (c) Describe a test, with results, to distinguish between an alkane and an alkene. [3] (d) Name a type of product made from alkenes. [1]

14 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 12 Jane is given a radioactive source. She finds out what type or types of radiation it emits. (a) Describe one safety precaution she must take when using the source. [1] (b) She sets up a GM-tube and finds there is a count of 12 in one minute with no source present. State why there is a count with no source present. [1] (c) She places the source a few centimetres from the GM-tube. Table 12.1 shows the results she obtains using different absorbers between the GM-tube and the source. Table 12.1 absorber reading 1 / counts per minute reading 2 / counts per minute reading 3 / counts per minute none 4352 4429 4388 thin card 1265 1321 1272 2 mm aluminium 1269 1247 1285 4 cm lead 33 45 37 (i) Explain why, when there is no absorber present, the readings vary. [1]

15 © UCLES 2010 0652/02/O/N/10 [Turn over For Examiner's Use (ii) Complete Table 12.2 and indicate whether beta and gamma radiation are present or absent. Use the evidence from Table 12.1 to explain the presence or absence of beta and gamma radiation. Table 12.2 type of radiation present (✓) absent () reason alpha ✓ There is a considerable drop between the reading for no absorber and with the thin card. beta gamma [4]

16 © UCLES 2010 0652/02/O/N/10 For Examiner's Use 13 The graph shows how the volume of carbon dioxide given off changes with time when marble chips (calcium carbonate) are reacted with hydrochloric acid. time volume of carbon dioxide Fig. 13.1 (a) Sketch a curve on Fig. 13.1 to show how the volume of carbon dioxide varies if the experiment is repeated at a higher temperature. (All other conditions and quantities remain unchanged.) Label this curve X. [2] (b) Sketch a curve on Fig. 13.1 to show how the volume of carbon dioxide varies if the experiment is repeated using larger marble chips. (All other conditions and quantities remain unchanged.) Label this curve Y. [2]

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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 2010 0652/02/O/N/10 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

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education MARK SCHEME for the October/November 2010 question paper for the guidance of teachers 0652 PHYSICAL SCIENCE 0652/02 Paper 2 (Core 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 must be read in conjunction with the question papers and the report on the examination. • CIE will not enter into discussions or correspondence in connection with these mark schemes. CIE is publishing the mark schemes for the October/November 2010 question papers for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level syllabuses and some Ordinary Level syllabuses.

Page 2 Mark Scheme: Teachers’ version Syllabus Paper IGCSE – October/November 2010 0652 02 © UCLES 2010 1 (a) 124 ;; (allow 1 mark for some correct working with incorrect final answer) [2] (b) CuO3 → CuO + CO2 ; [1] (c) (i) use of limewater ; goes cloudy / white precipitate ; [2] (ii) conducts electricity ; [1] [Total: 6] 2 (a) charge moves from A to B / A discharges through B ; current is the movement of charge ; [2] (b) V = IR ; 60 or .060 or 600 etc.; correct unit mV or V ; [3] [Total: 5] 3 (a) (i) wavelength correctly marked ; [1] (ii) depth decreases ; so speed reduces ; (mention of refraction C1 if nothing else scored) [2] (b) f = 18/4 ; = 4.5 Hz ; [2] (c) (i) ray from lamp to boy’s eye reflecting off water i ≈ r ; traced back to image ; [2] (ii) rays do not pass through the image ; [1] (accept cannot be cast on a screen) [Total: 8]

Page 3 Mark Scheme: Teachers’ version Syllabus Paper IGCSE – October/November 2010 0652 02 © UCLES 2010 4 (a) (i) hydrochloric ; [1] (ii) hydrogen ; [1] (iii) suitable drawing showing collection over water / in a gas syringe / by upward delivery ; at least one correct label ; [2] (b) RFM of zinc chloride = 136 (g) ; mass of zinc = 130 g ; [2] [Total: 6] 5 (a) (i) balance ; measuring cylinder ; [2] (ii) mass of empty cylinder (m1) and mass of cylinder plus sea water ; volume of water (m2) ; [2] (iii) mass of sea water = m2 – m1 ; density = mass / volume ; [2] (b) use of density = mass / volume ;; V = 250 cm3 [2] [Total: 8] 6 (a) liquid is solidifying / freezing ; (so) temperature remains constant ; [2] (b) energy is absorbed from the surroundings ; ice needs energy to melt ; water absorbs energy to raise temperature only ; (recognition that Cora’s water has to melt C1) [3] [Total: 5] 7 (a) sulfur dioxide ; SO2 ; [2] (b) mention of acid rain ; (mention of ozone depletion or global warning do not award this mark.) destroys buildings, damages fish / deforestation etc. ; [2] [Total: 4]

Page 4 Mark Scheme: Teachers’ version Syllabus Paper IGCSE – October/November 2010 0652 02 © UCLES 2010 8 sodium 11 ; +1 ; aluminium ; 13 +3 ; chlorine ; 17 ; –1 [6] [Total: 6] 9 (a) (i) magnetised steel / magnet (accept south pole) ; [1] (ii) south (seeking) pole at the top and north (seeking) pole at the bottom ; [1] (b) (i) a.c. supply (not battery) ; [1] (ii) circuit diagram with current through the solenoid ; controller placed in the solenoid (can be taken from the diagram) ; reduce the current to zero / remove controller from the solenoid (with current still on) ; [3] (iii) both sets of players attracted by the controller ; [1] [Total: 7] 10 (a) hydrogen advantage: no pollutants produced, etc. ; disadvantage: expensive (to separate from water) / difficult to store, etc. ; ethanol advantage: few pollutants produced / renewable, etc. ; disadvantage: CO2 emitted / uses land available for other crops, etc. ; [4] (b) (i) water ; [1] (ii) fermentation ; [1] [Total: 6] 11 (a) alkanes have only single bonds (between carbon atoms) / saturated ; alkenes have double bonds (between carbon atoms) / unsaturated ; [2] (b) ethane ; ethene ; [2] (c) use of bromine (water) ; remains unchanged with alkane ; goes colourless with alkene ; [3] (d) polymers / plastics ; [1] [Total: 8]

Page 5 Mark Scheme: Teachers’ version Syllabus Paper IGCSE – October/November 2010 0652 02 © UCLES 2010 12 (a) use of tongs / forceps / protective clothing / gloves / lead shielding / not point source; (reject exposure time / goggles / storing in lead) ; [1] (b) background radiation ; [1] (c) (i) random / spontaneous nature of emissions ; [1] (ii) beta
; no significant change with aluminium ; gamma ✓ ; count rate above background even with lead / significant amount of radiation penetrates the aluminium ; [4] [Total: 7] 13 (a) (X) steeper curve starting at the origin ; ending at same level ; [2] (Y) shallower curve starting at the origin ; ending at same level ; [2] [Total: 4]