Cambridge IGCSE Chemistry (BES) 0439 — 2018 May/June Paper 1 · Variant 3

This document consists of 15 printed pages and 1 blank page. IB18 06_0439_13/RP © UCLES 2018 [Turn over *0295273647* Cambridge International Examinations Cambridge International General Certificate of Secondary Education CHEMISTRY (US) 0439/13 Paper 1 Multiple Choice (Core) May/June 2018 45 minutes Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, Center number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. DO NOT WRITE IN ANY BARCODES. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 16. Electronic calculators may be used.

2 © UCLES 2018 0439/13/M/J/18 1 Mineral wool soaked in aqueous ammonia is placed in the apparatus shown. mineral wool soaked in aqueous ammonia damp red litmus paper After five minutes, the damp red litmus paper turned blue. Which process led to this change? A crystallization B diffusion C distillation D sublimation 2 Solid R reacted with dilute sulfuric acid. The initial temperature of the dilute sulfuric acid and the final temperature of the solution are shown. 25 20 15 10 25 20 15 10 initial temperature of the dilute sulfuric acid (°C) final temperature of the solution (°C) What was the change in temperature in °C? A – 6 B – 4 C 4 D 6

3 © UCLES 2018 0439/13/M/J/18 [Turn over 3 The melting points of four impure samples of lead(II) bromide were measured. The results are shown. Which sample is the most pure? temperature when the sample started to melt / °C temperature when the sample finished melting / °C A 342 355 B 353 360 C 365 371 D 372 373 4 Symbols representing four particles are shown. W 40 20 + 2 41 20X Y 37 18 Z 37 17 The letters are not the chemical symbols. Which particles have the same number of neutrons? A W and X2+ B W and Z C X2+ and Y D Y and Z 5 Which name is given to a pure substance made from more than one type of atom? A alloy B compound C element D mixture

4 © UCLES 2018 0439/13/M/J/18 6 The diagram shows solid element Q reacting with an acid to produce gas R. solid element Q gas R acid Which row describes Q and R? Q R A metal element with covalent bonds B metal element with ionic bonds C nonmetal compound with covalent bonds D nonmetal compound with ionic bonds 7 The ‘lead’ in a pencil is made of a mixture of graphite and clay. ‘lead’ When the percentage of graphite is increased, the pencil slides across the paper more easily. Which statement explains this observation? A Graphite has a high melting point. B Graphite is a form of carbon. C Graphite is a lubricant. D Graphite is a nonmetal. 8 The equation for the reaction between magnesium and dilute sulfuric acid is shown. The Mr of MgSO4 is 120. Mg + H2SO4 → MgSO4 + H2 Which mass of magnesium sulfate is formed when 12 g of magnesium completely reacts with dilute sulfuric acid? A 5 g B 10 g C 60 g D 120 g

5 © UCLES 2018 0439/13/M/J/18 [Turn over 9 What is produced at each electrode when molten rubidium chloride is electrolyzed using platinum electrodes? positive electrode negative electrode A chlorine hydrogen B chlorine rubidium C hydrogen chlorine D rubidium chlorine 10 What is released when any fuel is burned? A carbon dioxide B heat energy C smoke D water 11 Group I metals react vigorously with water and release heat. Which statement about this reaction is correct? A The reaction is endothermic and the energy change is negative. B The reaction is endothermic and the energy change is positive. C The reaction is exothermic and the energy change is negative. D The reaction is exothermic and the energy change is positive.

6 © UCLES 2018 0439/13/M/J/18 12 The diagram shows a rate of reaction experiment. excess dilute hydrochloric acid at 25 °C hydrogen magnesium Increasing the concentration of the acid and increasing the temperature both affect the rate of reaction. Which row is correct? increase the concentration of acid increase the temperature A decrease rate of reaction decrease rate of reaction B decrease rate of reaction increase rate of reaction C increase rate of reaction decrease rate of reaction D increase rate of reaction increase rate of reaction 13 In a chemical reaction, blue compound X changed into white compound Y. X → Y blue white Which statement describes this reaction? A Hydrated cobalt(II) chloride is heated. B Hydrated copper(II) sulfate is heated. C Water is added to anhydrous cobalt(II) chloride. D Water is added to anhydrous copper(II) sulfate. 14 Which equation shows an oxidation reaction? A C + O2 → CO2 B CaCO3 → CaO + CO2 C CaO + 2HCl → CaCl 2 + H2O D N2O4 → 2NO2

7 © UCLES 2018 0439/13/M/J/18 [Turn over 15 Pieces of damp red litmus paper and damp blue litmus paper are placed in three different gas jars. gas jar 1 red litmus paper blue litmus paper ammonia gas jar 2 chlorine gas jar 3 oxygen red litmus paper blue litmus paper red litmus paper blue litmus paper In which gas jars does at least one piece of litmus paper change color? A 1, 2 and 3 B 1 and 2 C 1 and 3 D 2 and 3 16 Which statement about oxides is correct? A A solution of magnesium oxide has a pH less than pH 7. B A solution of sulfur dioxide has a pH greater than pH 7. C Magnesium oxide reacts with nitric acid to make a salt. D Sulfur dioxide reacts with hydrochloric acid to make a salt. 17 Which methods are suitable for preparing both zinc sulfate and copper(II) sulfate? 1 reacting the metal oxide with warm dilute aqueous sulfuric acid 2 reacting the metal with dilute aqueous sulfuric acid 3 reacting the metal carbonate with dilute aqueous sulfuric acid A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only 18 A white crystalline solid is dissolved in distilled water. A small amount of dilute nitric acid is added followed by aqueous silver nitrate. No visible change occurs. What can be deduced about the white crystalline solid? A It contains chloride ions. B It does not contain ammonium ions. C It does not contain carbonate ions. D It must contain either sulfate or nitrate ions.

8 © UCLES 2018 0439/13/M/J/18 19 Which element is classified as a nonmetal in the Periodic Table? A calcium B chlorine C chromium D copper 20 Part of the Periodic Table is shown. Element Q has a low boiling point, low density and does not conduct electricity. Which element is Q? B C D A 21 Which row describes a typical transition element? density in g / cm3 melting point in °C boiling point in °C color of oxide A 0.97 98 883 white B 2.64 769 1382 white C 3.10 –7 59 yellow D 8.96 1085 2562 red 22 Helium is a noble gas. Which statement is correct? A A helium atom has eight electrons in its outer shell. B Helium exists as diatomic molecules. C Helium is used as an inert atmosphere in lamps. D There are no naturally occurring chemical compounds of helium.

9 © UCLES 2018 0439/13/M/J/18 [Turn over 23 Which diagram represents a solid alloy? A B C D 24 Some reactions of three metals and their oxides are shown. metal metal reacts with steam metal oxide reacts with carbon X no yes Y yes no Z yes yes What is the order of reactivity of the metals? most reactive least reactive A X Z Y B Y X Z C Y Z X D Z Y X 25 Which statement about the extraction of metals is correct? A Aluminum is extracted from bauxite by electrolysis. B Aluminum is extracted from hematite by heating with carbon. C Iron is extracted from bauxite by heating with carbon. D Iron is extracted from hematite by electrolysis. 26 Which statement explains why aluminum is used to manufacture aircraft? A It has a low density. B It is a good conductor of electricity. C It is a good conductor of heat. D It is ductile.

10 © UCLES 2018 0439/13/M/J/18 27 Dry air is passed over hot copper until all the oxygen has reacted. heat copper dry air The volume of gas at the end of the reaction is 120 cm3. What is the starting volume of dry air? A 132 cm3 B 152 cm3 C 180 cm3 D 570 cm3 28 A steel bicycle which had been left outdoors for several months was starting to rust. What would not reduce the rate of corrosion? A Remove the rust and paint the bicycle. B Remove the rust and store the bicycle in a dry shed. C Remove the rust and wipe the bicycle with a clean, damp cloth. D Remove the rust and wipe the bicycle with an oily cloth. 29 Which statements about water are correct? 1 Household water contains dissolved salts. 2 Water for household use is filtered to remove soluble impurities. 3 Water is treated with chlorine to kill bacteria. 4 Water is used in industry for cooling. A 1, 2, 3 and 4 B 1, 2 and 3 only C 1, 3 and 4 only D 2, 3 and 4 only

11 © UCLES 2018 0439/13/M/J/18 [Turn over 30 Fertilizers are often mixtures of solid compounds. Which compounds can be mixed to provide the three elements needed for healthy plant growth? A ammonium nitrate and calcium phosphate B ammonium nitrate and potassium chloride C ammonium phosphate and potassium chloride D potassium chloride and calcium phosphate 31 Carbon dioxide and methane are both greenhouse gases which contribute to climate change. Which statement explains how greenhouse gases contribute to climate change? A They absorb heat radiation from the Earth. B They absorb heat radiation from the Sun. C They absorb light radiation from the Sun. D They cause acid rain. 32 Element Z forms an oxide, ZO2. Three uses of ZO2 are listed. ● bleaching agent ● killing bacteria ● manufacturing an important acid What is Z? A carbon B lead C nitrogen D sulfur

12 © UCLES 2018 0439/13/M/J/18 33 Limestone is an important material with many uses. Limestone is heated to produce …1… and carbon dioxide. This reaction is called …2… . Which words correctly complete gaps 1 and 2? 1 2 A lime neutralization B lime thermal decomposition C slaked lime neutralization D slaked lime thermal decomposition 34 Lime is used to treat an industrial waste. lime untreated waste treated waste Which change occurs in the treatment? untreated waste treated waste A acidic → neutral B alkaline → acidic C alkaline → neutral D neutral → acidic 35 What is not the correct use of the fraction named? name of fraction use A fuel oil making waxes B gas oil fuel in diesel engines C kerosene jet fuel D naphtha making chemicals

13 © UCLES 2018 0439/13/M/J/18 [Turn over 36 Four organic compounds are listed. ethane ethanoic acid ethanol ethene Which bond do all four compounds contain? A C–C B C–H C C–O D O–H 37 The structures of some organic compounds are shown. 1 H C H H C H H O H 2 H C H H C H H H H C H H C H H C H H H H C O H 3 4 O O H C H H C H H C H Which compounds belong to the same homologous series? A 1 and 2 B 1 and 3 C 2 and 3 D 3 and 4 38 Which substances can be obtained by cracking hydrocarbons? A ethanol and ethene B ethanol and hydrogen C ethene and hydrogen D ethene and poly(ethene)

14 © UCLES 2018 0439/13/M/J/18 39 Sugars and ethene can both be made into ethanol using different reactions. Which type of reaction is used in each case? sugars to ethanol ethene to ethanol A fermentation addition B fermentation cracking C incomplete combustion addition D incomplete combustion cracking 40 Which substances are natural polymers? ethanol protein starch vinegar A     B     C     D    

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16 © UCLES 2018 0439/13/M/J/18 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 cesium 133 56 Ba barium 137 87 Fr francium – 88 Ra radium – 5 B boron 11 13 Al aluminum 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 –

IGCSE™ is a registered trademark. This document consists of 3 printed pages. © UCLES 2018 [Turn over Cambridge Assessment International Education Cambridge International General Certificate of Secondary Education CHEMISTRY (US) 0439/13 Paper 1 Multiple Choice (Core) May/June 2018 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge International will not enter into discussions about these mark schemes. Cambridge International is publishing the mark schemes for the May/June 2018 series for most Cambridge IGCSE™, Cambridge International A and AS Level and Cambridge Pre-U components, and some Cambridge O Level components.

0439/13 Cambridge IGCSE – Mark Scheme PUBLISHED May/June 2018 © UCLES 2018 Page 2 of 3 Question Answer Marks 1 B 1 2 A 1 3 D 1 4 B 1 5 B 1 6 A 1 7 C 1 8 C 1 9 B 1 10 B 1 11 C 1 12 D 1 13 B 1 14 A 1 15 B 1 16 C 1 17 C 1 18 C 1 19 B 1 20 A 1 21 D 1 22 D 1 23 B 1 24 C 1 25 A 1 26 A 1 27 B 1 28 C 1

0439/13 Cambridge IGCSE – Mark Scheme PUBLISHED May/June 2018 © UCLES 2018 Page 3 of 3 Question Answer Marks 29 C 1 30 C 1 31 A 1 32 D 1 33 B 1 34 A 1 35 A 1 36 B 1 37 B 1 38 C 1 39 A 1 40 C 1