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1 * * ambridg Intrnational Examinations ambridg Ordinary Lvl EMISTRY 5070/12 Papr 1 Multipl hoic Octobr/Novmbr 2014 dditional Matrials: Multipl hoic nswr Sht Soft clan rasr Soft pncil (typ or rcommndd) 1 hour RE TESE INSTRUTIONS FIRST Writ in soft pncil. o not us stapls, papr clips, glu or corrction fluid. Writ your nam, ntr numbr and candidat numbr on th nswr Sht in th spacs providd unlss this has bn don for you. O NOT WRITE IN NY ROES. 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 nswr Sht. Rad th instructions on th nswr 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. Elctronic calculators may b usd. This documnt consists of 13 printd pags and 3 blank pags. I14 11_5070_12/4RP ULES 2014 [Turn ovr

2 2 1 studnt wants to carry out an xprimnt to follow th rat of th raction btwn hydrochloric acid and marbl chips. ao 3 + 2l al 2 + O O Which diagrams show apparatus that is suitabl for this xprimnt? 1 2 hydrochloric acid and marbl chips masuring cylindr hydrochloric acid and marbl chips balanc 3 4 hydrochloric acid burtt gas syring marbl chips hydrochloric acid and marbl chips 1 and 2 only 1 and 3 only 1 and 4 only 1, 2 and 4 2 Solutions of lad(ii) nitrat and potassium iodid ar mixd togthr in th prparation of lad(ii) iodid. Which mthod can b usd to sparat th lad(ii) iodid from th mixtur? crystallisation distillation vaporation filtration ULES /12/O/N/14

3 3 3 small amount of aquous coppr(ii) sulfat is put into a tst-tub. fw drops of aquous ammonia ar addd to th tst-tub. Thn an xcss of aquous ammonia is addd to th sam tst-tub. What ar th two obsrvations? fw drops of aquous ammonia xcss aquous ammonia light blu prcipitat dark blu solution light blu prcipitat light blu prcipitat dark blu solution dark blu solution dark blu solution light blu prcipitat 4 n atom of lmnt Z has 14 nutrons and 13 protons. It forms a positiv ion. ow many lctrons dos th ion of Z hav? Which gas is nithr an lmnt nor a compound? ammonia chlorin air carbon monoxid 6 Why dos ammonia gas diffus fastr than hydrogn chlorid gas? mmonia has a highr boiling point than hydrogn chlorid. mmonia is a bas, hydrogn chlorid is an acid. Th ammonia molcul contains mor atoms than a hydrogn chlorid molcul. Th rlativ molcular mass of ammonia is smallr than that of hydrogn chlorid. 7 Th compound formd btwn lmnts X and Y is ionic. Which statmnt about lmnts X and Y is corrct? X and Y ar both at th lft-hand sid of th Priodic Tabl. X and Y ar both at th right-hand sid of th Priodic Tabl. X and Y ar both transition lmnts. X is at th opposit sid of th Priodic Tabl from lmnt Y. ULES /12/O/N/14 [Turn ovr

4 8 Th xprimnt shown is usd to tst potassium bromid crystals. 4 lamp bakr lctrods potassium bromid crystals Th lamp dos not light. istilld watr is thn addd to th bakr and th lamp lights. Which statmnt xplains ths rsults? Elctrons ar fr to mov in th solution whn potassium bromid dissolvs. Mtal ions ar fr to mov whn potassium bromid mlts. Mtal ions ar fr to mov whn potassium racts with watr. Oppositly chargd ions ar fr to mov in th solution whn potassium bromid dissolvs. 9 ow many lctrons ar usd in covalnt bonding in th N 2 molcul? Propn, 3 = 2, has a vry low boiling point bcaus of th waknss of th bond. = bond. bond. intrmolcular forcs. 11 What is th mpirical formula of a compound containing 12 g of carbon, 2 g of hydrogn and 16 g of oxygn only? O O 2 2 O 2 O ULES /12/O/N/14

5 5 12 What is th corrct quation for th raction taking plac at th ngativ lctrod whn moltn magnsium chlorid is lctrolysd using inrt lctrods? l l + 2l l Mg + + Mg Mg Mg 13 Which frtilisr contains th gratst prcntag by mass of nitrogn? (N 4 ) 2 PO 4 M r = 132 (N 4 ) 2 SO 4 M r = 132 N 4 NO 3 M r = 80 O(N 2 ) 2 M r = volum of than, 2 6, at r.t.p. has a mass of 20 g. What is th mass of an qual volum of propn, 3 6, at r.t.p.? 20 g 21 g 28 g 42 g 15 Which of ths procsss ar both ndothrmic? combustion, cracking combustion, frmntation cracking, photosynthsis frmntation, photosynthsis 16 Ethanol is producd by th frmntation of glucos from sugar can. In som countris thanol is usd as a ful. Which statmnts ar corrct? 1 Sugar can is a non-rnwabl (finit) rsourc. 2 Whn sugar can is growing it rmovs carbon dioxid from th atmosphr. 1 only 2 only both 1 and 2 nithr 1 nor 2 ULES /12/O/N/14 [Turn ovr

6 6 17 Which row corrctly classifis th oxids in th tabl? carbon dioxid coppr(ii) oxid zinc oxid acidic amphotric basic acidic basic amphotric acidic nutral amphotric basic nutral nutral 18 Sulfur is burnt in air. Which statmnt about this raction is corrct? Th gas formd turns aquous potassium dichromat(vi) from grn to orang. Th product is usd as a food prsrvativ. Th raction is ndothrmic. Th raction is rvrsibl. 19 Which mthod is usd to obtain chlorin from aquous sodium chlorid? crystallisation distillation lctrolysis filtration 20 Th quation shows th raction for th formation of sulfur trioxid using a catalyst. 2SO 2 (g) + O 2 (g) 2SO 3 (g) = 197 kj / mol Which chang in raction conditions would produc mor sulfur trioxid? adding mor catalyst dcrasing th prssur incrasing th tmpratur rmoving som sulfur trioxid 21 ow many of ths salts ar solubl in watr? gl a(no 3 ) 2 (N 4 ) 2 SO 4 PbO ULES /12/O/N/14

7 22 Th positions of four lmnts ar shown on th outlin of part of th Priodic Tabl. Which lmnt is a solid non-mtal at r.t.p.? 7 23 Which statmnts about frtilisrs containing nitrats ar corrct? 1 Thy incras plant growth. 2 Nitrats dissolv in watr. 3 Eutrophication is causd by nitrats from farmland ntring rivrs. 4 If nitrats ar applid to alkalin soils thy produc ammonia gas. 1 and 3 only 1, 2 and 3 1, 2 and 4 2 and 3 only Which is a proprty of th lmnt molybdnum, 42 Mo? low dnsity low mlting point forms whit or colourlss compounds has mor than on oxidation stat 25 In th Priodic Tabl, how many priods ar ndd to accommodat th lmnts of atomic numbrs 1-18? Th diagram shows th arrangmnt of lctrons in th atoms of four diffrnt lmnts. Which is th last ractiv of th four lmnts? ULES /12/O/N/14 [Turn ovr

8 8 27 gas G 1 has no smll, 2 is not poisonous, 3 racts with hydrogn at high tmpratur and prssur. What is gas G? carbon monoxid hlium nitrogn chlorin 28 Substanc P racts with dilut hydrochloric acid to produc a gas. This gas rducs substanc Q. Q hat dilut hydrochloric acid P What ar substancs P and Q? P Q coppr coppr(ii) oxid lad lad(ii) oxid magnsium zinc oxid zinc coppr(ii) oxid ULES /12/O/N/14

9 29 Iron rusts whn xposd to oxygn in th prsnc of watr. Which mthod will not slow down th rat of rusting of an iron roof? 9 attaching strips of coppr to it coating it with plastic galvanising it with zinc painting it 30 Th solid carbonats of thr mtals, W, X and Y, ar hatd. rsult carbonat of W carbonat of X carbonat of Y carbon dioxid givn off solid changs colour from grn to black carbon dioxid givn off solid dos not chang colour carbon dioxid not givn off solid dos not chang colour Which statmnts ar corrct? 1 Mtal Y is mor ractiv than mtal X. 2 Mtal W is a transition mtal. 3 If dilut nitric acid is addd to all thr carbonats, carbon dioxid is givn off from th carbonats of W and X but not from th carbonat of Y. 1 and 2 only 1 and 3 only 2 and 3 only 1, 2 and 3 31 ond braking is an ndothrmic procss and bond making is an xothrmic procss. For which chang is it not possibl, from th quation, to dduc whthr th raction is ndothrmic or xothrmic? l 2(g) 2l (g) 2 (g) + l 2(g) 2l (g) 2 O(g) 2(g) + O(g) (g) + l (g) l (g) ULES /12/O/N/14 [Turn ovr

10 32 Which row is corrct for th raction of th alkn with stam and a catalyst? 10 alkn product 3 = 2 3 (O) 3 only 3 2 = O only 3 = 3 3 (O) 2 3 only ( 3 ) 2 = 2 ( 3 ) 2 2 O only 33 Why is carbon usd in watr purification? It acts as a filtr to rmov insolubl solids. It dsalinats th watr. It disinfcts th watr. It rmovs tasts and odours. 34 Which of th statmnts about th prparation and proprtis of ammonia is corrct? mmonia is formd whn ammonium chlorid is hatd with an acid. mmonia racts with sodium hydroxid solution to form a salt and watr. mmonia racts with watr to form hydrogn ions. solution of ammonia in watr has a p gratr than 7. ULES /12/O/N/14

11 11 35 Which structur rprsnts that of an alloy? ky +, + positiv ions ngativ ions lctrons 36 Which statmnt is not corrct? arbohydrats, protins and fats ar all natural macromolculs. Tryln contains th sam linkags as a protin. Whn a carbohydrat is hydrolysd, sugars ar formd. Whn a protin is hydrolysd, amino acids ar formd. 37 Which statmnts would b tru of th compound which has th formula shown? O O O O 1 It would ract with xcss aquous sodium hydroxid in a 1 : 1 molar ratio. 2 In aquous solution, it would hav a p of It would ract with an alcohol to form an str. 1 only 1 and 2 2 and 3 3 only ULES /12/O/N/14 [Turn ovr

12 38 Whn butn racts with bromin, which compound could b mad? 12 r r r r r r r r 39 Mthan is th first mmbr of th alkan sris of hydrocarbons. Th scond mmbr is than. Which statmnts about than ar corrct? 1 Ethan has th formula Ethan has a highr boiling point than that of mthan. 3 Ethan has th sam molcular formula as mthan. 4 Ethan has chmical proprtis vry similar to thos of mthan. 1, 2 and 3 1 and 4 2 and 4 3 only 40 Whn thanol racts with thanoic acid, th str thyl thanoat is formd. 2 5 O + 3 O 2 3 O O What is th formula of th str formd whn mthanol racts with butanoic acid, 3 7 O 2? 2 5 O O O O 2 3 ULES /12/O/N/14

13 13 LNK PGE ULES /12/O/N/14

14 14 LNK PGE ULES /12/O/N/14

15 15 LNK PGE ULES /12/O/N/14

16 16 T SEET Th Priodic Tabl of th Elmnts Group I II III IV V VI VII ydrogn lium Li N O F N Lithium ryllium oron arbon Nitrogn Oxygn Fluorin Non Na Mg l Si P S l r Sodium Magnsium luminium Silicon Phosphorus Sulfur hlorin rgon K a Sc Ti V r Mn F o Ni u Zn Ga G s S r Kr Potassium alcium Scandium Titanium Vanadium hromium Mangans Iron obalt Nickl oppr Zinc Gallium Grmanium rsnic Slnium romin Krypton Rb Sr Y Zr Nb Mo Tc Ru Rh Pd g d In Sn Sb T Rubidium Strontium Yttrium Zirconium Niobium Molybdnum Tchntium Ruthnium Rhodium Palladium Silvr admium Indium Tin ntimony Tllurium Iodin Xnon I X s a La f Ta W R Os Ir Pt u g Tl Pb i Po t Rn asium arium Lanthanum afnium Tantalum Tungstn Rhnium Osmium Iridium Platinum Gold Mrcury Thallium Lad ismuth Polonium statin Radon * Fr Ra c Francium Radium ctinium *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 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.). Prmission to rproduc itms whr third-party ownd matrial protctd by copyright is includd has bn sought and clard whr possibl. Evry rasonabl ffort has bn mad by th publishr (ULES) to trac copyright holdrs, but if any itms rquiring claranc hav unwittingly bn includd, th publishr will b plasd to mak amnds at th arlist possibl opportunity. ambridg Intrnational Examinations is part of th ambridg ssssmnt Group. ambridg ssssmnt is th brand nam of Univrsity of ambridg Local Examinations Syndicat (ULES), which is itslf a dpartmnt of th Univrsity of ambridg. ULES /12/O/N/14