*4976831493* ambridge International Examinations ambridge Ordinary Level EMISTRY 5070/12 Paper 1 Multiple hoice May/June 2014 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or is recommended) 1 hour RE TESE INSTRUTIONS FIRST Write in soft pencil. o not use staples, paper clips, 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. O NOT WRITE IN NY ROES. 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. Electronic calculators may be used. This document consists of 15 printed pages and 1 blank page. I14 06_5070_12/5RP ULES 2014 [Turn over
1 Which process is suitable for obtaining the water from an aqueous solution of sugar? 2 crystallisation distillation filtration use of a separating funnel 2 Sulfur dioxide and oxygen react together. 2SO 2 (g) + O 2 (g) 2SO 3 (g) = -197 kj / mol Which change(s) will increase both the rate of reaction and the equilibrium concentration of SO 3? 1 adding a catalyst 2 increasing temperature 3 increasing pressure 1 only 2 1 and 3 3 only 3 The scheme shows a sequence of reactions starting from compound Y. compound Y excess NO 3 (aq) gas + colourless solution NaO(aq) white precipitate insoluble in excess NaO(aq) What could the compound Y be? aluminium sulfate calcium carbonate copper(ii) carbonate zinc carbonate ULES 2014 5070/12/M/J/14
4 The apparatus shown can be used to find the rate of some chemical reactions. 3 The rate of which reaction can be followed using this apparatus? gno 3 + KI Mg + l NaO + uso 4 NaO + l 5 rude oil is fractionally distilled in a fractionating column. The positions at which fractions X and Y are collected are shown. fractions X Y crude oil Which statement is correct? The temperature increases up the column. X condenses at a lower temperature than Y. X has a higher boiling point than Y. X has longer chain molecules than Y. ULES 2014 5070/12/M/J/14 [Turn over
4 6 n ion X + has 23 nucleons and 10 electrons. What does the nucleus of X contain? protons neutrons 9 14 10 13 11 12 13 10 7 Which element exists as a macromolecule? carbon hydrogen oxygen sodium 8 Which substance can conduct electricity by the movement of ions? copper graphite mercury sodium chloride 9 The diagram shows the molecule ethyl propanoate. O 3 2 O 2 3 onsider all the electrons in a molecule of ethyl propanoate. ow many electrons not involved in bonding are there in the molecule? 8 10 18 22 ULES 2014 5070/12/M/J/14
10 Sodium and magnesium are next to each other in the Periodic Table. 5 melting point / boiling point / Na 98 883 Mg 649 1103 Which statement explains the differences in the melting and boiling points of these elements? Na and Mg have different types of bonding. The electrostatic forces of attraction are stronger in Mg. The ionic bonds in Mg are stronger than those in Na. The Mg atoms are larger than the Na atoms. 11 Sulfuric acid and potassium hydroxide can react together to form potassium hydrogensulfate, KSO 4, and water only. Which amounts of the reactants are required? equal masses of sulfuric acid and potassium hydroxide equal numbers of moles of sulfuric acid and potassium hydroxide 1 mol of sulfuric acid to 2 mol of potassium hydroxide 2 mol of sulfuric acid to 1 mol of potassium hydroxide 12 The diagram shows the structures of the atoms of elements L and M. e e e e e 3p 4n e e 8p 8n e e p = proton n = neutron e = electron e e L M The elements combine to form a compound. What is the mass of one mole of this compound? 11 g 12 g 23 g 30 g ULES 2014 5070/12/M/J/14 [Turn over
13 concentrated aqueous solution of sodium chloride is electrolysed. 6 What are the equations for the reactions taking place at the cathode (negative electrode) and the anode (positive electrode)? cathode ( ve) anode (+ve) 2 + + 2e 2 2l l 2 + 2e 2 + + 2e 2 4O O 2 + 2 2 O + 4e Na + + e Na 2l l 2 + 2e Na + + e Na 4O O 2 + 2 2 O + 4e 14 What is observed during the electrolysis of aqueous copper(ii) sulfate using carbon electrodes? pink solid is deposited on the anode. ubbles form on the negative electrode. The colour of the solution fades. The negative electrode becomes smaller. ULES 2014 5070/12/M/J/14
7 15 Nitrogen monoxide is an atmospheric pollutant that is formed in car engines by the reaction between nitrogen and oxygen. N 2 (g) + O 2 (g) 2NO(g) = +66 kj / mol Which diagram represents the energy profile for this reaction? enthalpy enthalpy E a E a reaction pathway reaction pathway enthalpy E a enthalpy E a reaction pathway reaction pathway 16 Which substance does not react with hydrochloric acid? zinc carbonate zinc hydroxide zinc metal zinc nitrate ULES 2014 5070/12/M/J/14 [Turn over
8 17 The table shows the energy released by the complete combustion of some compounds used as fuels. compound formula M r in kj / mol benzene 6 6 78 3270 heptane 7 16 100 4800 octane 8 18 114 5510 propane 3 8 44 2200 Which fuel releases the least energy when 1 g of the compound is completely burned? benzene heptane octane propane 18 In which circuit does the bulb light? key = bulb u u uso 4 (aq) g Nal (s) Zn u 2 5 O(l) Zn g 2 SO 4 (aq) u ULES 2014 5070/12/M/J/14
9 19 mmonia is made by a reversible reaction between nitrogen and hydrogen. N 2 (g) + 3 2 (g) 2N 3 (g) = 92 kj / mol What is the effect of increasing the pressure in this process? Less heat is produced. More ammonia is formed. More nitrogen is present at equilibrium. The reaction slows down. 20 Which change involves reduction? calcium carbonate to calcium oxide copper to brass ethene to poly(ethene) sand to silicon 21 Samples of three oxides, X, Y and Z, were added separately to dilute hydrochloric acid and to dilute sodium hydroxide. X and Y react with dilute hydrochloric acid but Z does not react. Y and Z react with aqueous sodium hydroxide but X does not react. Which type of oxide are each of X, Y and Z? type of oxide acidic amphoteric basic X Y Z Y X Z Z X Y Z Y X 22 Which process does not involve the use of a transition element? the manufacture of margarine from vegetable oil the manufacture of sulfuric acid in the ontact process the purification of river water to produce drinking water the removal of combustion pollutants from car exhaust gases ULES 2014 5070/12/M/J/14 [Turn over
23 Element Q is in Period 3 of the Periodic Table. It can form ions with the formula Q 3. Which element is most likely to be Q? 10 aluminium arsenic phosphorus sulfur 24 Which property would all the hydrogen compounds of the Group VII elements possess? be covalent be solids at room temperature form alkaline aqueous solutions conduct electricity when molten 25 student mixed together aqueous solutions of Y and Z. white precipitate formed. Which could not be Y and Z? Y Z hydrochloric acid silver nitrate hydrochloric acid sodium nitrate sodium chloride lead(ii) nitrate sodium chloride silver nitrate 26 luminium is extracted from its molten oxide ore by electrolysis whereas zinc is extracted by reduction of its oxide when heated with coke. Which statement explains this? luminium is very high in the reactivity series. luminium ores are very rare. Electrolysis is a cheaper method than reduction of the oxide with coke. Zinc oxide has a higher melting point than aluminium oxide. ULES 2014 5070/12/M/J/14
11 27 In which solid can layers of atoms slide over each other? diamond graphite haematite silica 28 Which ion causes the acidity in dilute hydrochloric acid? l + 2 + O 29 Which metal can react rapidly with steam but reacts only very slowly with cold water? calcium copper iron potassium 30 Which gas turns moist blue litmus paper red and produces a precipitate when bubbled through calcium hydroxide solution? O O 2 l N 3 31 The diagram shows three steps in the manufacture of sulfuric acid. sulfur step P sulfur step Q sulfur step R dioxide trioxide sulfuric acid In which steps is a catalyst used? step Q only step R only steps Q and R only steps P and Q and R 32 Which property of compounds in a homologous series is correct? They all have the same general formula. They all have the same molecular formula. They all have the same number of isomers. They all have the same physical properties. ULES 2014 5070/12/M/J/14 [Turn over
12 33 Which compound, on combustion, never forms carbon? carbon monoxide ethanol ethene methane 34 Which process is an example of cracking? 2 4 + 2 O 2 5 O 3 6 + 2 3 8 3 8 + 5O 2 3O 2 + 4 2 O 4 10 2 4 + 2 6 35 hydride is a compound containing only two elements, one of which is hydrogen. Which element can form the greatest number of different hydrides? carbon chlorine nitrogen oxygen 36 liquid reacts with each of sodium carbonate, potassium hydroxide and ethanol. What is the liquid? aqueous ammonia ethanoic acid ethyl ethanoate sodium hydroxide ULES 2014 5070/12/M/J/14
13 37 ompound X and compound Y combine to form a polymer. OO OO 2 N N 2 compound X compound Y Which of the statements about the polymer and its formation is not correct? mmonia is formed during the production of the polymer. ydrolysis of the polymer produces X and Y. The polymer is a polyamide. The polymer is formed by a condensation reaction. 38 The structural formulae of some organic compounds are shown below. O O 1 2 O O O O 3 4 Which compounds are alcohols? 1 only 1 and 2 only 1, 2 and 3 4 ULES 2014 5070/12/M/J/14 [Turn over
14 ULES 2014 5070/12/M/J/14 39 What is the partial structure of the polymer formed by the polymerisation of propene, 3 = 2? 3 3 3 3 3 3 3 3 3 3 3 3 3 3 40 When a volcano erupts, which gas is produced in significant amounts? carbon monoxide methane ozone sulfur dioxide
15 LNK PGE ULES 2014 5070/12/M/J/14
16 T SEET The Periodic Table of the Elements Group I II III IV V VI VII 0 1 4 e ydrogen elium 1 2 7 9 11 12 14 16 19 20 Li e N O F Ne Lithium eryllium oron arbon Nitrogen Oxygen Fluorine Neon 3 4 5 6 7 8 9 10 23 24 27 28 31 Na Mg l Si P 32 35.5 40 S l r Sodium Magnesium luminium Silicon Phosphorus Sulfur hlorine rgon 11 12 13 14 15 16 17 18 39 40 45 48 51 52 55 56 59 59 64 65 70 73 75 79 80 84 K a Sc Ti V r Mn Fe o Ni u Zn Ga Ge s Se r Kr Potassium alcium Scandium Titanium Vanadium hromium Manganese Iron obalt Nickel opper Zinc Gallium Germanium rsenic Selenium romine Krypton 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 85 88 89 91 93 96 101 103 106 108 112 115 119 122 128 127 131 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd g d In Sn Sb Te Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver admium Indium Tin ntimony Tellurium Iodine Xenon 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 I Xe 133 137 139 178 181 184 186 190 192 195 197 201 204 207 209 s a La f Ta W Re Os Ir Pt u g Tl Pb i Po t Rn aesium arium Lanthanum afnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead ismuth Polonium statine Radon 55 56 57 * 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 226 227 Fr Ra c Francium Radium ctinium 87 88 89 *58-71 Lanthanoid series 90-103 ctinoid series Key b a X a = relative atomic mass X = atomic symbol b = proton (atomic) number 58 90 140 e erium 232 Th Thorium 141 Pr Praseodymium 59 Pa Protactinium 91 144 Nd Neodymium 60 92 238 U Uranium Pm Promethium 61 93 Np Neptunium 62 94 150 Sm Samarium Pu Plutonium 63 95 152 Eu Europium m mericium 64 96 157 Gd Gadolinium m urium 65 97 159 Tb Terbium k erkelium 66 98 162 y ysprosium f alifornium 67 99 165 o olmium Es Einsteinium 68 100 167 Er Erbium Fm Fermium 69 169 Tm Thulium Md Mendelevium 101 70 102 173 Yb Ytterbium No Nobelium 71 175 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. 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 2014 5070/12/M/J/14