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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary LevelCHEMISTRY 5070/01Paper 1 Multiple ChoiceAdditional Materials: Multiple Choice Answer SheetSoft clean eraserSoft pencil (type B or HB is recommended)

May/June 20051 hourREAD THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.

Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has been done for you.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 20.IB05 06_5070_01/3RP

This document consists of 17 printed pages and 3 blank pages. UCLES 2005 [Turn overwww.xtremepapers.net21 The experiment is set up as shown and left until there is no further change.waterpurple crystal ofpotassium manganate(VII)What is observed?Aa colourless layer below a purple layerB a colourless liquid with the purple crystal unchangedC a purple layer below a colourless layerDa uniformly purple solution2 A student adds aqueous sodium hydroxide or aqueous ammonia to aqueous solutions of four different metal compounds.Which solution contains Zn2+ ions?solutionadd a few drops of NaOH(aq)add excessNaOH(aq)add a few drops of NH3(aq)add excessNH3(aq)

A B C

Dppt ppt ppt

no pptppt dissolves ppt dissolves pptno pptppt ppt

no pptno pptppt dissolves pptno pptno ppt

UCLES 2005 5070/01/M/J/05www.xtremepapers.net33 A sample of a pure compound is heated until it is completely molten and the compound is then allowed to cool until it is completely solid again.The graph shows how the temperature of the compound changes with time.PtemperatureQRStimeWhen are liquid and solid both present?AP to Q and R to SB P to QC Q to RDR to S UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net44 A beaker of nitrogen is inverted over a porous pot containing carbon monoxide as shown.The water level does not change.beaker nitrogencarbon monoxideporous potwaterWhat is the reason for this?ABoth gases are diatomic.B Nitrogen is an unreactive gas.C The gas particles are too large to pass through the porous pot.DThe two gases have the same relative molecular mass.5 Which statement about all the noble gases is correct?AThe number of protons in the atoms equals the number of neutrons.B Their atoms each have a stable arrangement of electrons. CTheir atoms each have eight electrons in their outer shell. DThey exist as molecules containing two atoms.6 A substance Q conducts electricity both when solid and molten.What is Q?Aan alloyB a hydrocarbonC a metal oxideDa salt UCLES 2005 5070/01/M/J/05www.xtremepapers.net57 The diagrams show the structures of two forms of carbon.STWhich set of data is correct for these two structures?conducts electricityvery hard materialcan be used as lubricant

A B C

DT S S

TT T SSS S T

T

8 Substance X has a melting point higher than 500 oC. It is insoluble both in water and in organic solvents. It conducts electricity when both solid and molten.What is X?AcopperB mercuryC poly(ethene)Dsodium chloride9 How many moles per dm3 of gaseous carbon dioxide are there if 4.4 g occupies 500 cm3?A0.1 mol / dm3 B 0.2 mol / dm3 C 2.2 mol / dm3 D8.8 mol / dm310 Which reactions take place during the electrolysis of aqueous copper(II) sulphate with copper electrodes?reaction at positive electrodereaction at negative electrode

A B C

DCu2+ + 2e Cu4OH 2H2O + O2 + 4eCu Cu2+ + 2eCu Cu2+ + 2eCu Cu2+ + 2eCu2+ + 2e Cu2H+ + 2e H2Cu2+ + 2e Cu

UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net611 The heat-reflecting shields of some space rockets are gold-plated, using electrolysis.Which electrodes and electrolyte would be used to gold-plate the heat shield?negative electrodepositive electrodeelectrolyte

A B C

Dcarbon goldheat shieldheat shieldheat shield heat shield carbongoldgold compound copper compound copper compoundgold compound

12 The reaction C2H4 + 3O2 2CO2 + 2H2O is exothermic becauseAmore bonds are broken than are formed.B more bonds are formed than are broken.C the energy needed to break the bonds is greater than that released on forming new bonds.Dthe energy needed to break the bonds is less than that released on forming new bonds. UCLES 2005 5070/01/M/J/05www.xtremepapers.net713 Which reaction profile shows the fastest exothermic reaction?ABenergy

energyreaction pathway

reaction pathwayCDenergy

energyreaction pathway

reaction pathway UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net814 In two separate experiments, a substance is decomposed and the gas evolved is collected.The graph shows the total volume of gas collected against time for each experiment.volume of gas collected0

time

experiment 2 experiment 1Which graph shows how the speed of reaction varies with time in each experiment?AB1 speed of reaction

2 speed of reaction2time

1timeCDspeed ofreaction21

speed ofreaction12time

time15 A colourless gas is passed into each of three different solutions. The results are shown in the table.solution ofpotassium iodideacidified potassium dichromate(VI)acidified potassium manganate(VII)

resultstays colourlessorange to greenpurple to colourless

What is the colourless gas?Aan acidB an alkaliC an oxidising agentDa reducing agent UCLES 2005 5070/01/M/J/05www.xtremepapers.net916 Chlorine can be manufactured by using the reversible reaction between hydrogen chloride and oxygen.4HCl(g) + O2(g) 2H2O(g) + 2Cl2(g) H is negativeA mixture in dynamic equilibrium is present at 450 oC.Which change to the mixture will increase the amount of chlorine at equilibrium?Aadding a catalystB adding more HCl(g)C decreasing the pressureDincreasing the temperature17 Which pair of substances produce a precipitate when their aqueous solutions are mixed?Asodium chloride and barium nitrate Bsodium nitrate and barium chloride Csodium nitrate and silver nitrateDsodium sulphate and barium chloride18 Which statement about catalysts is correct?ACatalysts are used in industry to reduce energy costs.B Catalysts are used up during a reaction.C Iron is used as a catalyst in the Contact Process.DTransition metals do not make good catalysts.19 Element X is a solid at room temperature.It needs one electron per atom to gain the electronic structure of a noble gas. It is the least reactive element in its group.What is the element X?AAtB Cs C F DLi

UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net1020 Elements X and Y are in Group VII of the Periodic Table.X is a liquid at room temperature. Y is a solid at room temperature.1 Atoms of Y have more protons than atoms of X.

2 Molecules of Y have more atoms than molecules of X.

3 Y displaces X from aqueous solutions of X

ions.Which statements are correct?A1 only B 2 only C 3 onlyD1, 2 and 321 Metal M will displace copper from aqueous copper(II) sulphate solution, but will not displace iron from aqueous iron(II) sulphate solution. M is extracted from its oxide by heating the oxide with carbon.What is the order of reactivity of these four metals?least reactivemost reactive

A B C

Dsodium sodium coppercoppermetal M iron iron

metal Miron metal M metal Mironcopper copper sodiumsodium

UCLES 2005 5070/01/M/J/05www.xtremepapers.net1122 The diagram shows the electrolytic production of aluminium.waste gasescathode(-ve)

carbon anodes (+ve)What is the physical state of the aluminium oxide and aluminium during this process?aluminium oxidealuminium

A B C

Dliquid liquid solidsolidliquid solid liquid

solid

23 Aluminium is used to make saucepans because of its apparent lack of reactivity.Which property of aluminium explains its unreactivity?AIt has a high electrical conductivity.B It has a low density.C It has a surface layer of oxide.DIt is in Group III of the Periodic Table.24 Alloys are usually harder than the metals from which they are made.Which difference between the metals explains the greater hardness of alloys?Aatomic radiiB densitiesC electrical conductivitiesDrelative atomic masses UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net1225 Which gas cannot be removed from the exhaust gases of a petrol powered car by its catalytic converter?Acarbon dioxideB carbon monoxideC hydrocarbonsDnitrogen dioxide26 Which gas, present in pond water, decreases in concentration during eutrophication?Acarbon dioxideB methane C nitrogen Doxygen27 The results of tests carried out on compound X are shown.testresult

dilute hydrochloric acid addedwarm with aqueous sodium hydroxidegas given off which turned limewater cloudygas evolved which turned red litmus blue

What is compound X?Aammonium carbonateB ammonium nitrate Ccalcium carbonate Dcalcium nitrate28 Aluminium sulphate can be obtained as shown in the equation.2Al(OH)3 + 3H2SO4 Al2(SO4)3 + 6H2OHow many moles of sulphuric acid are needed to produce 0.5 mol of aluminium sulphate?A0.5 B 1.0 C 1.5 D3.0 UCLES 2005 5070/01/M/J/05www.xtremepapers.net1329 Ammonium sulphate is an important fertiliser.During which stage in the manufacture of ammonium sulphate does a reaction with water occur?sulphurstageAsulphur dioxidestageBsulphur trioxidestageCsulphuric acidstageDammonium sulphate

30 The diagram shows the colours of the indicators, methyl orange and methyl red, at different pHvalues.pH2 3 4 5 6

colour of methyl orangeredyellow

colour of methyl redredyellow

The table shows the pH of four solutions.solutionWXYZ

pH2 3 5 6

In which solutions will both indicators be yellow?AW and XB X and YC Y and ZDZ only31 The diagram shows some of the stages in the manufacture of ammonium sulphate.From which connecting pipe would a major leak most increase the pH value of rain?nitrogen and hydrogen

pipe A

reaction vessel

ammonia pipe Breaction vessel

ammonium sulphateSO2+O2

reaction vessel

SO3pipe D

reaction vessel

H2SO4

pipe C UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net1432 Which graph shows the changes in pH as an excess of hydrochloric acid is added to aqueous sodium hydroxide?14pH70

Avolume of acid added

14pH70

Bvolume of acid added14pH70

Cvolume of acid added

14pH70

Dvolume of acid added33 Two tests are carried out on a solution of compound X.

testresult

add nitric acid followed by aqueous silver nitrateexcess aqueous sodium hydroxide addedwhite precipitate formedwhite precipitate formed that does not re-dissolve

What is compound X? Aaluminium chloride Baluminium sulphateC calcium chlorideDcalcium sulphate UCLES 2005 5070/01/M/J/05www.xtremepapers.net1534 Which property of the alkanes does not increase as relative molecular mass increases?Aboiling point Bflammability Cmelting point Dviscosity35 What is the structure of the product of the reaction between butene, CH3CH2CH=CH2, and bromine, Br2?ACH2BrCH2CH2CH2Br

B CH2BrCH2CHBrCH3C CH3CHBrCH2CH2Br

DCH3CH2CHBrCH2Br

36 Which formula represents a compound that will react with sodium carbonate to give off carbon dioxide?ACH3OHB HCO2CH3C CH3CO2HDCH3CO2C2H537 The displayed formulae of two compounds are shown.HOHHOHCCH

HCCCHOCH H

HHOHWhat are the similarities and differences between the two compounds?similaritiesdifferences

A B C

Dmolecular formulae molecular formulae structuresstructuresreactionsrelative molecular masses molecular formulaerelative molecular masses

UCLES 2005 5070/01/M/J/05[Turn overwww.xtremepapers.net1638 In which of the following are all the compounds members of the same homologous series?ACH4C2H6C3H6

BCH4C2H6C3H8

CC2H4C3H6C4H10

DC3H4C3H6C3H8

39 Which polymer has the empirical formula CH?ABCDH H CCHHn

H H CCHCH3n

H H CCHC2H5n

H H CCHC6H5n40 Terylene (a polyester) is made by condensation polymerisation of the two monomers shown.HOCO

COHO

andHOOHWhat is the repeat unit of the polymer?ACCOOOOnBOCOOOnCCOCOOOnDCCOOOn UCLES 2005 5070/01/M/J/05www.xtremepapers.net17BLANK PAGE5070/01/M/J/05www.xtremepapers.net18BLANK PAGE5070/01/M/J/05www.xtremepapers.net19BLANK PAGEPermission 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.5070/01/M/J/05www.xtremepapers.netDATA SHEETThe Periodic Table of the ElementsGroup

IIIIIIIVVVIVII0

1HHydrogen14HeHelium2

7LiLithium39BeBeryllium411BBoron512CCarbon614NNitrogen716OOxygen819FFluorine920NeNeon10

23NaSodium1124MgMagnesium1227AlAluminium1328SiSilicon1431PPhosphorus1532SSulphur1635.5ClChlorine1740ArArgon18

39KPotassium1940CaCalcium2045ScScandium2148TiTitanium2251VVanadium2352CrChromium2455MnManganese2556FeIron2659CoCobalt2759NiNickel2864CuCopper2965ZnZinc3070GaGallium3173GeGermanium3275AsArsenic3379SeSelenium3480BrBromine3584KrKrypton36

85RbRubidium3788SrStrontium3889YYttrium3991ZrZirconium4093NbNiobium4196MoMolybdenum42TcTechnetium43101RuRuthenium44103RhRhodium45106PdPalladium46108AgSilver47112CdCadmium48115InIndium49119SnTin50122SbAntimony51128TeTellurium52127IIodine53131XeXenon54

133CsCaesium55137BaBarium56139LaLanthanum57*178HfHafnium72181TaTantalum73184WTungsten74186ReRhenium75190OsOsmium76192IrIridium77195PtPlatinum78197AuGold79201HgMercury80204TlThallium81207PbLead82209BiBismuth83PoPolonium84AtAstatine85RnRadon86

FrFrancium87226RaRadium88227AcActinium89

*58-71 Lanthanoid series90-103 Actinoid seriesaKeyXb

a = relative atomic massX = atomic symbolb = proton (atomic) number

The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.).

140

Ce

Cerium

58141

Pr

Praseodymium

59144

Nd

Neodymium

60

Pm

Promethium

61150

Sm

Samarium

62152

Eu

Europium

63157

Gd

Gadolinium

64159

Tb

Terbium

65162

Dy

Dysprosium

66165

Ho

Holmium

67167

Er

Erbium

68169

Tm

Thulium

69173

Yb

Ytterbium

70175

Lu

Lutetium

71232

Th

Thorium

90

Pa

Protactinium

91238

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

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5070/01/M/J/05

UCLES 2005

University of Cambridge International Examinations is part of the University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

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