UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY

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1 UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS Intrnational Gnral rtificat of Scondary Education EMISTRY 0620/01 Papr 1 Multipl hoic May/Jun 2004 dditional Matrials: Multipl hoic nswr Sht Soft clan rasr Soft pncil (typ or is rcommndd) 45 minuts RE TESE INSTRUTIONS FIRST Writ in soft pncil. o not us stapls, papr clips, highlightrs, glu or corrction fluid. Writ your nam, ntr numbr and candidat numbr on th answr sht in th spacs providd unlss this has bn don for you. Thr ar forty qustions on this papr. nswr all qustions. For ach qustion thr ar four possibl answrs,,, and. hoos th on you considr corrct and rcord your choic in soft pncil on th sparat answr sht. Rad th instructions on th answr sht vry carfully. Each corrct answr will scor on mark. mark will not b dductd for a wrong answr. ny rough working should b don in this booklt. copy of th Priodic Tabl is printd on pag 16. You may us a calculator. I04 06_0620_01/3RP ULES 2004 This documnt consists of 16 printd pags. [Turn ovr

2 1 Som studnts ar askd to dscrib diffrncs btwn gass and liquids. Thr of thir suggstions ar: 2 1 gas molculs ar furthr apart; 2 gas molculs ar smallr; 3 liquid molculs vibrat around fixd positions. Which suggstions ar corrct? 1 only 2 only 3 only 1, 2 and 3 2 colourd liquid vaporiss asily at room tmpratur. Som of th liquid is placd at th bottom of a sald gas jar. Which diagram shows th apparanc of th jar aftr svral hours? colourd liquid colourd vapour colourd vapour colourd vapour 3 Masurmnts ar mad on som pur watr. its boiling point, b.p. its frzing point, f.p. its p Sodium chlorid is now dissolvd in th watr and th masurmnts rpatd. Which masurd valus chang? b.p. f.p. p ULES /01/M/J/04

3 4 Th diagram shows a chromatogram obtaind from thr swts, X, Y and Z. 3 yllow rd rd yllow rd yllow rd swt X swt Y swt Z ow many diffrnt rd dys ar prsnt in th swts? Which proprtis dos a Group VI lmnt hav? forms covalnt bonds forms ionic bonds conducts lctricity whn solid ULES /01/M/J/04 [Turn ovr

4 4 ULES /01/M/J/04 6 Th lctronic structur of an lmnt is shown. lctron nuclus ky Which diagram shows th lctronic structur of anothr lmnt in th sam group in th Priodic Tabl? 7 In th diagrams, circls of diffrnt sizs rprsnt atoms of diffrnt lmnts. Which diagram can rprsnt hydrogn chlorid gas? PMT

5 5 8 ow many lctrons ar shard btwn th atoms in a molcul of mthan, 4, and in a molcul of watr, 2 O? mthan watr Th oxid Pb 3 O 4 racts with dilut nitric acid to form lad(ii) nitrat, lad(iv) oxid and anothr product. What is th quation for this raction? Pb 3 O 4 + 4NO 3 2Pb(NO 3 ) 2 + PbO O Pb 3 O 4 + 2NO 3 2PbNO 3 + PbO Pb 3 O 4 + 4NO 3 Pb(NO 3 ) 4 + 2PbO O 2Pb 3 O 4 + 2NO 3 2Pb 2 NO 3 + 2PbO Th compound thyl mrcaptan, 2 5 S, has a vry unplasant smll. What is its rlativ molcular mass? Th proton numbr of hlium is 2. What information dos this giv about hlium? Its atom has two lctrons. Its atom is twic as havy as a hydrogn atom. It is a Group II lmnt. Its molcul has two atoms. ULES /01/M/J/04 [Turn ovr

6 6 12 In th circuit shown th bulb dos not light. bulb carbon lctrod carbon lctrod bakr solid coppr(ii) sulphat Which chang would caus th bulb to light? add mor solid coppr(ii) sulphat to th bakr add watr to dissolv th coppr(ii) sulphat rplac th carbon lctrods with coppr lctrods rvrs th connctions to th lctrods 13 Th following lctrolysis circuit is st up, using inrt lctrods P, Q, R and S. + + P Q R S moltn lad(ii) bromid concntratd hydrochloric acid t which of th lctrods is a Group VII lmnt producd? P only P and R Q only Q and S 14 Whn it is usd as a ful, hydrogn combins with substanc X. What is X? carbon mthan nitrogn oxygn ULES /01/M/J/04

7 7 15 Th tabl compars th strngths of th bonds for ractions of th typ blow. X 2 + Y 2 2XY Which raction is most xothrmic? bonds in X 2 bonds in Y 2 bonds in XY strong strong strong strong strong wak wak wak strong wak wak wak 16 In an xprimnt, coppr(ii) oxid is changd to coppr by a gas X. What happns to th coppr(ii) oxid and what is X? coppr(ii) oxid gas X oxidisd carbon dioxid oxidisd carbon monoxid rducd carbon dioxid rducd carbon monoxid 17 In an xprimnt, a 2 g lump of zinc and 2 g of powdrd zinc ar addd sparatly to qual volums of dilut sulphuric acid. Th solid lin on th graph shows th volum of gas givn off whn th 2 g lump is usd. Which dottd lin is obtaind whn th zinc is powdrd? volum of gas 0 0 tim ULES /01/M/J/04 [Turn ovr

8 8 18 Which procss is ndothrmic? adding watr to anhydrous coppr(ii) sulphat burning magnsium to mak th oxid hating watr to mak stam nutralising acidic industrial wast 19 n aquous solution contains ithr aluminium sulphat or zinc sulphat. Which aquous ragnt can b usd to confirm which salt is prsnt? ammonia barium chlorid sodium hydroxid sulphuric acid 20 ompound X dos not dissolv in watr, dos not ract with watr, is usd to control soil acidity. What is X? calcium carbonat calcium chlorid calcium hydroxid calcium oxid 21 quous sodium hydroxid is addd to two diffrnt solutions with th rsults shown. X Y grn prcipitat formd light blu prcipitat formd Which cation is prsnt in X and in Y? X Y ammonium iron(ii) coppr(ii) ammonium iron(ii) coppr(ii) iron(ii) ammonium ULES /01/M/J/04

9 22 Th diagrams show th arrangmnt of lctrons in thr diffrnt atoms ky lctron nuclus Which atoms ar mtals? 1 and 2 only 1 and 3 only 2 and 3 only 1, 2 and 3 23 Which proprty do all mtals hav? Thy ar hard. Thy conduct lctricity. Thy form acidic oxids. Thy ract with watr. 24 Th diagram shows a light bulb. filamnt argon Why is argon usd instad of air in th light bulb? rgon is a good conductor of lctricity. rgon is mor ractiv than air. Th filamnt glows mor brightly. Th filamnt lasts for a longr tim. ULES /01/M/J/04 [Turn ovr

10 10 25 Which lmnt is likly to b a transition mtal? mlting point in o dnsity in g / cm 3 colour of oxid whit yllow whit black 26 Thr mtals ar xtractd as shown in th tabl. mtal X Y Z mthod of xtraction lctrolys moltn mtal oxid hat mtal oxid with carbon occurs naturally as th mtal What is th ordr of ractivity of th mtals? most ractiv last ractiv X Y Z X Z Y Y Z X Z X Y 27 amatit is rducd to iron in th blast furnac. What is X? hamatit + carbon monoxid iron + X carbon carbon dioxid hydrogn oxygn 28 Which objct is last likly to contain aluminium? a bicycl fram a hammr a saucpan an aroplan body ULES /01/M/J/04

11 11 29 sampl of clan, dry air is passd ovr hot coppr until all th oxygn in th air racts with th coppr. clan dry air coppr hat Th volum of air dcrass by 30 cm 3. What was th starting volum of th sampl of air? 60 cm cm cm cm 3 30 Th p of som aquous sodium hydroxid is masurd. Th solution is thn distilld as shown. thrmomtr NaO(aq) flask hat distillat collctd ow do th p valus of th distillat and of th solution lft in th flask compar with th original? p of th distillat p of th solution lft in th flask highr highr highr lowr lowr highr lowr lowr ULES /01/M/J/04 [Turn ovr

12 12 31 Which two gass producd from th burning of ptrol in motor vhicls contribut to th formation of acid rain? carbon dioxid and carbon monoxid carbon monoxid and sulphur dioxid carbon monoxid and nitrogn dioxid nitrogn dioxid and sulphur dioxid 32 n old railway carriag is bing rstord. Mtal strips ar scurd on to th outsid of th woodn carriag by mans of scrws. ftr a fw wks opn to th wind and rain, th scrws ar havily corrodd but th mtal strips ar not. mtal strip wood mtal scrw luminium is mor ractiv than both stl and coppr. Which two mtals would giv this rsult? scrws strips aluminium stl coppr aluminium coppr stl stl aluminium 33 Th diagram shows how oxygn is usd in wlding. gas, X flam oxygn, O 2 What is gas X? actyln argon non nitrogn ULES /01/M/J/04

13 34 Th diagrams show th growth of four plants. 13 bfor tratmnt aftr tratmnt N 4 l(aq) (N 4 ) 2 SO 4 (aq) NaNO 3 (aq) Na 2 SO 4 (aq) Which lmnt is acting as a frtilisr? l N Na S ULES /01/M/J/04 [Turn ovr

14 14 35 Gas is rlasd in all of th xampls blow. WINE acid rain on a limston statu a candl burning a dog panting frmnting graps Which gas do thy all produc? carbon dioxid hydrogn mthan oxygn 36 What is formd whn calcium carbonat is hatd? calcium and carbon calcium and carbon dioxid calcium oxid and carbon calcium oxid and carbon dioxid 37 Which compound contains thr lmnts? thanol thn mthan poly(thn) ULES /01/M/J/04

15 38 Four fractions obtaind from crud oil (ptrolum) ar listd blow. Which fraction is paird with a corrct us? 15 fraction us bitumn making waxs disl ful for aircraft lubricating making roads paraffin ful for oil stovs 39 Th structurs of thr compounds ar shown. Why do ths substancs all blong to th sam homologous sris? Thy all contain an vn numbr of carbon atoms. Thy all contain th sam functional group. Thy ar all hydrocarbons. Thy ar all saturatd. 40 Th tabl shows som suggstd ractions involving thanol. Which suggstions about th ractants and products ar corrct? raction ractants products thanol and oxygn carbon dioxid and watr thn and stam thanol and hydrogn glucos and oxygn thanol and carbon dioxid glucos and watr thanol and oxygn ULES /01/M/J/04

16 16 T SEET Th Priodic Tabl of th Elmnts Group I II III IV V VI VII ydrogn 2 4 lium 3 7 Li Lithium 4 9 ryllium 5 11 oron 6 12 arbon 7 14 N Nitrogn 8 16 O Oxygn 9 19 F Fluorin N Non Na Sodium Mg Magnsium l luminium Si Silicon P Phosphorus S Sulphur l hlorin r rgon K Potassium a alcium Sc Scandium Ti Titanium V Vanadium r hromium Mn Mangans F Iron o obalt Ni Nickl u oppr Zn Zinc Ga Gallium G Grmanium s rsnic S Slnium r romin Kr Krypton Rb Rubidium Sr Strontium Y Yttrium Zr Zirconium Nb Niobium 96 Mo Molybdnum Tc Tchntium Ru Ruthnium Rh Rhodium Pd Palladium g Silvr d admium In Indium Sn Tin Sb ntimony T Tllurium I Iodin X Xnon s asium Fr Francium a arium 226 Ra Radium 139 La Lanthanum 57 * c ctinium f afnium Ta Tantalum W Tungstn R Rhnium Os Osmium Ir Iridium Pt Platinum u Gold g Mrcury Tl Thallium Pb Lad i ismuth 84 Po Polonium 85 t statin 86 Rn Radon *58-71 Lanthanoid sris ctinoid sris Ky b a X a = rlativ atomic mass X = atomic symbol b = proton (atomic) numbr rium 232 Th Thorium 141 Pr Prasodymium 59 Pa Protactinium Nd Nodymium 238 U Uranium Pm Promthium Np Nptunium Sm Samarium Pu Plutonium Eu Europium m mricium Gd Gadolinium m urium Tb Trbium k rklium y ysprosium f alifornium o olmium Es Einstinium Er Erbium Fm Frmium Tm Thulium Md Mndlvium Yb Yttrbium No Noblium Lu Luttium Lr Lawrncium 103 Th volum of on mol of any gas is 24 dm 3 at room tmpratur and prssur (r.t.p.). Univrsity of ambridg Intrnational Examinations is part of th Univrsity of ambridg Local Examinations Syndicat (ULES) which is itslf a dpartmnt of th Univrsity of ambridg. 0620/01/M/J/04

Molecules and Covalent Bond

Molecules and Covalent Bond Molculs and ovalnt ond Qustion Papr 1 Lvl IGSE Subjct hmistry (0620/0971) Exam oard ambridg Intrnational Examinations (IE) Topic toms, lmnts and compounds Sub-Topic Molculs and covalnt bonds ooklt Qustion