UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education

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1 UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS International General ertificate of Secondary Education EMISTRY 0620/12 Paper 1 Multiple hoice May/June 2012 * * dditional Materials: RE TESE INSTRUTIONS FIRST Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or is recommended) 45 Minutes Write in soft pencil. o not use staples, paper clips, highlighters, glue or correction fluid. Write your name, entre number and candidate number on the nswer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. nswer all questions. For each question there are four possible answers,, and. hoose the one you consider correct and record your choice in soft pencil on the separate nswer Sheet. Read the instructions on the nswer Sheet very carefully. Each correct answer will score one mark. mark will not be deducted for a wrong answer. ny rough working should be done in this booklet. copy of the Periodic Table is printed on page 16. You may use a calculator. This document consists of 16 printed pages. I12 06_0620_12/3RP ULES 2012 [Turn over

2 1 Which diagram shows the process of diffusion? 2 key different atoms 2 Which method would be most suitable for the separation of a mixture of sand and water to obtain the sand? chromatography crystallisation distillation filtration 3 student investigates how the concentration of an acid affects the speed of reaction with a 0.5 g mass of magnesium at 30. The student has a beaker, concentrated acid, water and the apparatus below. P Q R S a balance a clock a measuring cylinder a thermometer Which pieces of apparatus does the student use? P, Q and R only P, Q and S only Q, R and S only P, Q, R and S ULES /12/M/J/12

3 3 4 n element Y has the proton number 18. The next element in the Periodic Table is an element Z. Which statement is correct? Element Z has one more electron in its outer shell than element Y. Element Z has one more electron shell than element Y. Element Z is in the same group of the Periodic Table as element Y. Element Z is in the same period of the Periodic Table as element Y. 5 Which atom has twice as many neutrons as protons? e 2 6 The table contains information about four substances. Which substance is potassium chloride? melting point conduction of electricity / when molten in aqueous solution 11 no yes 98 yes yes 772 yes yes 1410 no insoluble 7 The electronic structures of atoms P and Q are shown. P Q key = electron P and Q react to form an ionic compound. What is the formula of this compound? PQ 2 P 2 Q P 2 Q 6 P 6 Q 2 ULES /12/M/J/12 [Turn over

4 8 The diagrams show the structures of two forms, P and Q, of a solid element. 4 P Q What are suitable uses of P and Q, based on their structures? use of solid P use of solid Q drilling drilling lubricating drilling drilling lubricating lubricating lubricating 9 Methane, 4, burns in the air to form carbon dioxide and water. What is the balanced equation for this reaction? 4 (g) + O 2 (g) O 2 (g) O(g) 4 (g) + 2O 2 (g) O 2 (g) O(g) 4 (g) + 2O 2 (g) O 2 (g) + 2 O(g) 4 (g) + 3O 2 (g) O 2 (g) O(g) 10 In which reaction is lead(ii) oxide, PbO, oxidised? PbO + Pb + O PbO + O Pb + O 2 PbO + 2 Pb + 2 O 2PbO + O 2 2PbO 2 ULES /12/M/J/12

5 11 The diagram shows an unsuccessful experiment to nickel plate a pan. 5 ve +ve nickel cathode pan nickel sulfate solution Which change is necessary to plate the pan with nickel? dd more nickel sulfate to the solution. eat the solution to 100. Increase the current in the circuit. Make the pan the negative electrode. 12 The rates of some chemical reactions can be measured by using the apparatus shown. reactants g balance For which reaction is this apparatus suitable? MgO 3 + 2l Mgl 2 + O O Mg + Znl 2 Mgl 2 + Zn Mgl 2 + 2NaO Mg(O) 2 + 2Nal MgO + 2l Mgl O ULES /12/M/J/12 [Turn over

6 6 13 The diagram shows that two gases are formed when concentrated hydrochloric acid is electrolysed using inert electrodes. +ve ve concentrated hydrochloric acid Which row correctly describes the colours of the gases at the electrodes? anode (+ve) cathode ( ve) colourless colourless colourless yellow-green yellow-green colourless yellow-green yellow-green 14 The diagram shows the reaction between zinc oxide and dilute hydrochloric acid. zinc oxide powder dilute hydrochloric acid 20 p 1 aqueous zinc chloride 22 p 7 before after Which terms describe the reaction? endothermic neutralisation ULES /12/M/J/12

7 15 Four different gases are passed through the apparatus shown. 7 gas in gas out damp red litmus paper damp blue litmus paper Which gas has no effect on either piece of litmus paper? ammonia carbon dioxide chlorine hydrogen 16 n aqueous solution of copper(ii) sulfate was made by adding excess copper(ii) oxide to dilute sulfuric acid. The mixture was heated, stirred and then filtered. dilute sulfuric acid copper(ii) sulfate solution copper(ii) oxide heat What was the p of the acid before adding the copper(ii) oxide and of the solution after filtration? p of acid before adding copper(ii) oxide p of solution after filtration greater than 7 7 greater than 7 less than 7 less than 7 7 less than 7 greater than 7 ULES /12/M/J/12 [Turn over

8 17 queous potassium iodide is added to aqueous silver nitrate. What are the colours of the final precipitate and solution? 8 precipitate solution brown colourless white yellow yellow colourless yellow white 18 Three gas jars contain carbon dioxide, hydrogen and oxygen, as shown. carbon dioxide hydrogen oxygen Which one of the following tests could be used to discover which gas is in each jar? a glowing splint a lighted splint damp blue litmus paper limewater 19 The diagram shows an outline of part of the Periodic Table. X Y Z Which statement about elements X, Y and Z is not correct? ll are metals. ll conduct electricity. ll form coloured compounds. ll react with oxygen. ULES /12/M/J/12

9 9 20 Elements X, Y and Z are in Group VII of the Periodic Table. X is a gas. Y is less reactive than Z Z is a red liquid. When X, Y and Z are put in order of increasing proton number, which order is correct? X Y Z X Z Y Y X Z Y Z X 21 Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? can be used as a catalyst conducts electricity when solid has low density forms coloured compounds 22 Five elements have proton numbers 10, 12, 14, 16 and 18. What are the proton numbers of the three elements that form oxides? 10, 12 and 14 10, 14 and 18 12, 14 and 16 14, 16 and Which statement about aluminium is not correct? It is resistant to corrosion. It is strong and has a high density. It is used in food containers. It is used in the manufacture of aircraft. ULES /12/M/J/12 [Turn over

10 24 Many metals are extracted from their ores by heating the metal oxide with carbon. 10 Which metal cannot be extracted using this method? aluminium copper iron zinc 25 metal has the following properties. It does not react with cold water. It reacts with dilute hydrochloric acid. It cannot be extracted from its oxide using carbon. etween which two metals in the reactivity series should it be placed? calcium and magnesium iron and copper magnesium and zinc zinc and iron 26 Which statements about the general properties of metals are correct? 1 conduct electricity when solid 2 form acidic oxides 3 high melting point 1 and 3 1 only 2 and 3 2 only 27 Water for human use is treated by filtration then chlorination. Which uses do not need water of this quality? 1 water for cooling in industry 2 water for flushing toilets in the home 3 water for drinking 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only ULES /12/M/J/12

11 28 arbon monoxide is an air pollutant produced when petrol is burned in a car engine. 11 Why is carbon monoxide considered to be an air pollutant? It causes global warming. It causes the corrosion of buildings. It is a greenhouse gas. It is poisonous. 29 new planet has been discovered and its atmosphere has been analysed. atmosphere planet The table shows the composition of the atmosphere. gas percentage by volume carbon dioxide 4 nitrogen 72 oxygen 24 Which gases are present in the atmosphere of the planet in a higher percentage than they are in the Earth s atmosphere? carbon dioxide and oxygen carbon dioxide only nitrogen and oxygen nitrogen only 30 cetylene, 2 2, is a hydrocarbon. When acetylene and oxygen react, the hot flame produced can be used to weld steel. Which statement is correct? cetylene and oxygen react exothermically. cetylene is saturated. Oxygen and steel react endothermically. Oxygen is a gaseous fuel. ULES /12/M/J/12 [Turn over

12 31 Fertilisers are used to provide three elements needed to increase the yield of crops. Which two compounds, when used together, would provide all three of these elements? 12 ammonium nitrate and calcium phosphate ammonium nitrate and potassium sulfate potassium nitrate and calcium phosphate potassium nitrate and potassium sulfate 32 arbon dioxide and methane are greenhouse gases which contribute to global warming. Which process does not increase global warming? burning fossil fuels decay of organic waste farming cattle for beef growing crops such as sugar cane 33 When coal and oil burn in power stations, the acidic gas sulfur dioxide is formed. Sulfur dioxide is removed by absorbing it in a liquid sprayed down a tower. liquid X tower spray waste gases (including sulfur dioxide) What is liquid X? calcium hydroxide solution sodium chloride solution dilute hydrochloric acid water ULES /12/M/J/12

13 34 The table shows bonds that are present and bonds that are not present in compound X. bond 13 = O =O O What type of compound is X? a carboxylic acid an alcohol an alkane an alkene 35 The diagram shows different fuels from which electricity can be generated. diesel oil electricity uranium coal Which box completes the diagram? ammonia bitumen natural gas steam ULES /12/M/J/12 [Turn over

14 36 The diagram shows apparatus used to separate petroleum into four fractions. 14 thermometer petroleum on rock wool heat water fraction Which fraction contains the smallest hydrocarbon molecules? fraction boiling point range / up to to to 170 over Ethanol is a fuel used in cars. It can be made from petroleum O 2 5 O 2 5 O + 3O 2 2O O cracking producing ethanol burning ompounds of how many homologous series appear in these equations? ULES /12/M/J/12

15 38 utene is an alkene which is manufactured by cracking hydrocarbons. 15 Which hydrocarbon can be cracked to make butene? ethane, 2 6 decane, methane, 4 propane, Which substance does not produce carbon dioxide when it burns in oxygen? butane ethanol ethene hydrogen 40 Ethanol is an important chemical produced by the 1 of 2. Which words correctly complete gaps 1 and 2? 1 2 combustion ethane combustion glucose fermentation ethane fermentation glucose ULES /12/M/J/12

16 16 T SEET The Periodic Table of the Elements Group I II III IV V VI VII ydrogen 2 4 e elium 3 7 Li Lithium 4 9 e eryllium 5 11 oron 6 12 arbon 7 14 N Nitrogen 8 16 O Oxygen 9 19 F Fluorine Ne Neon Na Sodium Mg Magnesium l luminium Si Silicon P Phosphorus S Sulfur l hlorine r rgon K Potassium a alcium Sc Scandium Ti Titanium V Vanadium r hromium Mn Manganese Fe Iron o obalt Ni Nickel u opper Zn Zinc Ga Gallium Ge Germanium s rsenic Se Selenium r romine Kr Krypton Rb Rubidium Sr Strontium Y Yttrium Zr Zirconium Nb Niobium 96 Mo Molybdenum Tc Technetium Ru Ruthenium Rh Rhodium Pd Palladium g Silver d admium In Indium Sn Tin Sb ntimony Te Tellurium I Iodine Xe Xenon s aesium Fr Francium a arium 226 Ra Radium 139 La Lanthanum 57 * c ctinium f afnium Ta Tantalum W Tungsten Re Rhenium Os Osmium Ir Iridium Pt Platinum u Gold g Mercury Tl Thallium Pb Lead i ismuth 84 Po Polonium 85 t statine 86 Rn Radon *58-71 Lanthanoid series ctinoid series Key b a X a = relative atomic mass X = atomic symbol b = proton (atomic) number e erium 232 Th Thorium 141 Pr Praseodymium Pa Protactinium Nd Neodymium 238 U Uranium Pm Promethium Np Neptunium Sm Samarium Pu Plutonium Eu Europium m mericium Gd Gadolinium m urium Tb Terbium k erkelium y ysprosium f alifornium o olmium Es Einsteinium Er Erbium Fm Fermium Tm Thulium Md Mendelevium Yb Ytterbium No Nobelium Lu Lutetium Lr Lawrencium 103 The volume of one mole of any gas is 24 dm 3 at room temperature and pressure (r.t.p.). 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 (ULES) 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 ambridge International Examinations is part of the ambridge ssessment Group. ambridge ssessment is the brand name of University of ambridge Local Examinations Syndicate (ULES), which is itself a department of the University of ambridge. ULES /12/M/J/12

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS International General ertificate of Secondary Education EMISTRY 0620/11 Paper 1 Multiple hoice October/November 2009 *2348620235* dditional Materials: RE TESE