UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level
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1 * * UNIVERSITY F MRIGE INTERNTINL EXMINTINS General ertificate of Education rdinary Level EMISTRY 5070/11 Paper 1 Multiple hoice ctober/november 2010 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or recommended) 1 hour RE TESE INSTRUTINS FIRST 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. This document consists of 16 printed pages. I10 11_5070_11/3RP ULES 2010 [Turn over
2 2 1 Substance X dissolves in water to form a colourless solution. This solution reacts with aqueous lead(ii) nitrate in the presence of dilute nitric acid to give a yellow precipitate. What is substance X? calcium iodide copper(ii) chloride iron(ii) iodide sodium chloride 2 The diagram shows a diffusion experiment. beaker porous pot oxygen Y water Which gas, when present in the beaker over the porous pot, will cause the water level at Y to rise? carbon dioxide, 2 chlorine, l 2 methane, 4 nitrogen dioxide, N 2 ULES /11//N/10
3 3 The diagram shows apparatus used to obtain carbon monoxide. 3 dilute hydrochloric acid lumps of charcoal carbon monoxide heat calcium carbonate What is the main purpose of Y? Y water to dry the gas to prevent water being sucked back on to the hot carbon to remove carbon dioxide from the gas to remove hydrogen chloride from the gas 4 The boiling points of various gases found in the air are shown below. argon 186 carbon dioxide 78 nitrogen 198 oxygen 183 If the air is cooled, the first substance to condense is water. If the temperature is lowered further, what is the next substance to condense? argon carbon dioxide nitrogen oxygen ULES /11//N/10 [Turn over
4 4 5 The fractional distillation apparatus shown is to be used for separating a mixture of two colourless liquids. thermometer is missing from the apparatus. Where should the bulb of the thermometer be placed? water out cold water in heat 6 ydrogen can form both + ions and ions. Which one of the statements below is correct? n + ion has more protons than an ion. n + ion has no electrons. n ion has one more electron than an + ion. n ion is formed when a hydrogen atom loses an electron. 7 dark, shiny solid, X, conducts electricity. xygen combines with X to form a gaseous oxide. What is X? graphite iodine iron lead ULES /11//N/10
5 8 The diagram shows the molecule ethyl propanoate ow many bonding pairs of electrons are there in the molecule? The conduction of electricity by metals is carried out by the movement of electrons only. electrons and positive ions. negative ions only. negative ions and positive ions. 10 Which substance could be sodium chloride? melting point / conduction of electricity when liquid in aqueous solution 114 nil good 180 nil nil (insoluble) 808 good good 3550 nil nil (insoluble) 11 What is the concentration of iodine molecules, I 2, in a solution containing 2.54 g of iodine in 250 cm 3 of solution? 0.01 mol / dm mol / dm mol / dm mol / dm 3 ULES /11//N/10 [Turn over
6 12 The diagram shows the results of an electrolysis experiment using inert electrodes. 6 liquid X + Which could be liquid X? aqueous copper(ii) sulfate concentrated aqueous sodium chloride dilute sulfuric acid ethanol 13 The energy profile for the forward direction of a reversible reaction is shown. energy activation energy progress of reaction Which row correctly shows the sign of both the activation energy and the type of the enthalpy change for the reverse reaction? sign of activation energy type of enthalpy change negative endothermic negative exothermic positive endothermic positive exothermic ULES /11//N/10
7 7 14 The equation shows the formation of sulfur trioxide in the ontact process. 2S 2 (g) + 2 (g) 2S 3 (g) = 95 kj / mol What would decrease the yield of sulfur trioxide in a given time? addition of more oxygen an increase in pressure an increase in temperature removal of S 3 (g) from the reaction chamber 15 Which graph represents how the rate of reaction varies with time when an excess of calcium carbonate reacts with dilute hydrochloric acid? rate rate 0 0 time 0 0 time rate rate 0 0 time 0 0 time 16 In which reaction is nitric acid acting as an oxidising agent? u + 4N 3 u(n 3 ) N 2 u + 2N 3 u(n 3 ) Na N 3 2NaN Na + N 3 NaN ULES /11//N/10 [Turn over
8 17 student mixed together aqueous solutions of Y and Z. white precipitate formed. Which could not be solutions Y and Z? 8 solution Y solution Z hydrochloric acid silver nitrate hydrochloric acid sodium nitrate sodium chloride lead(ii) nitrate sodium chloride silver nitrate 18 The tests below were carried out on a solution containing ions of the metal X. test add sodium chloride solution add sodium sulfate solution add sodium hydroxide solution observation no change no change a precipitate was formed, soluble in excess of the hydroxide What is metal X? calcium iron lead zinc 19 Which property is common to calcium, potassium and sodium? Their atoms all lose two electrons when they form ions. They all form carbonates which are insoluble in water. They are all less dense than water. They are all metallic. 20 Which set of the electronic structures are only found in metals? 2, 1 2, 8, 1 2, 8, 8, 1 2, 5 2, 6 2, 7 2, 7 2, 8, 7 2, 8, 18, 7 2, 8, 3 2, 8, 4 2, 8, 5 ULES /11//N/10
9 9 21 The position of metal M in the reactivity series is shown. decrease in reactivity K, Na, M, l, Zn, Fe, Pb, u, g Which method will be used to extract M from its ore? electrolysis of its aqueous sulfate electrolysis of its molten oxide reduction of its oxide by heating with coke reduction of its oxide by heating with hydrogen 22 When zinc is added to a solution of a metal sulfate, the metal is deposited and zinc ions are produced in solution. Which metal is deposited? calcium copper magnesium potassium 23 The diagram shows the structure of brass. zinc atom copper atom Why is brass harder than pure copper? The zinc atoms form strong covalent bonds with copper atoms. The zinc atoms prevent layers of copper atoms from slipping over each other easily. The zinc atoms prevent the sea of electrons from moving freely in the solid. Zinc atoms have more electrons than copper atoms. ULES /11//N/10 [Turn over
10 24 The diagram shows processes that take place in the manufacture of ammonia. 10 substance W substance X cracking fractional distillation hydrogen nitrogen catalyst Y ammonia What are substances W and X and catalyst Y? W X Y air oil iron air oil vanadium(v) oxide oil air iron oil air vanadium(v) oxide 25 Sulfur is burnt in air. Which statement about this reaction is correct? Sulfur is oxidised to sulfur trioxide. The gas formed turns aqueous potassium dichromate(vi) from orange to green. The reaction is reversible. The reaction needs a catalyst. ULES /11//N/10
11 26 Using the apparatus shown, chlorine is passed through the tube. 11 potassium bromide potassium iodide P Q R chlorine gentle heat fter a short time, coloured substances are seen at P, Q and R. What are these coloured substances? at P at Q at R green gas red brown vapour violet vapour green gas violet vapour black solid red brown vapour violet vapour black solid violet vapour red brown vapour red brown vapour 27 Which equation in the blast furnace extraction of iron is not a redox reaction? a 3 a Fe Fe In the electrolysis of molten aluminium oxide for the extraction of aluminium, the following three reactions take place. 1 l e l e Which reactions take place at the anode? 1 only 2 only 1 and 3 2 and 3 ULES /11//N/10 [Turn over
12 29 Which statement about the material used for aircraft bodies is correct? ircraft bodies are made from 12 an aluminium alloy because pure aluminium is too soft. pure aluminium because of its high melting point. pure aluminium because of its low density. pure aluminium because of its resistance to corrosion. 30 catalytic converter in a car exhaust system speeds up the change of pollutants into less harmful products. Which change does not occur in a catalytic converter? carbon dioxide carbon carbon monoxide carbon dioxide nitrogen oxides nitrogen unburned hydrocarbons carbon dioxide and water 31 Which natural process can cause nitrogen oxides to be formed in the atmosphere? bacterial decay of plants lightning activity photosynthesis respiration 32 Which type of water in the left hand column is linked correctly to a statement in the right hand column? distilled water may contain fertilisers washed off from the fields drinking water contains no dissolved substances river water contains dissolved sodium chloride sea water can be desalinated by treatment with chlorine ULES /11//N/10
13 13 ULES /11//N/10 [Turn over 33 n organic compound has an empirical formula 2 4. What is the compound? butanoic acid butanol ethanoic acid ethanol 34 Which formula represents a compound likely to undergo addition polymerisation? N 35 The diagrams show two organic compounds. S T Which statement about the compounds S and T is correct? oth S and T react with sodium carbonate. S and T react together to form the ester ethyl propanoate. T can be changed into S using acidified potassium dichromate(vi). They are in the same homologous series.
14 14 36 Five structures are shown Which structures represent identical molecules? 1 and 3 only 2 and 3 only 1, 3 and 4 only 1, 3 and 5 only 37 Which statement about ethanol is correct? It is an unsaturated compound. It is formed by the catalytic addition of steam to ethene. It is formed by the oxidation of ethanoic acid. It reacts with ethyl ethanoate to form an acid. 38 In which reaction is water produced? manufacture of ethanol from ethene manufacture of margarine from vegetable oils manufacture of poly(ethene) from ethene manufacture of Terylene from a carboxylic acid and an alcohol ULES /11//N/10
15 39 The results of tests on compound Z are shown. 15 test add bromine water add aqueous sodium carbonate result turns colourless carbon dioxide formed What is compound Z? 40 Polymer X has the structure shown. N N N N The list shows four terms that can be applied to polymers. 1 addition polymer 2 condensation polymer 3 polyamide 4 polyester Which two terms can be applied to polymer X? 1 and 3 1 and 4 2 and 3 2 and 4 ULES /11//N/10
16 16 T SEE T The Periodic T able of the Element s Group I II III IV V VI VII e ydrogen elium Li e N F Ne Lithium eryllium oron arbon Nitrogen xygen Fluorine Neon Na Mg l Si P S l r Sodium Magnesium luminium Silicon Phosphorus Sulfur hlorine rgon K a Sc T i V r Mn Fe o Ni u Zn Ga Ge s Se r Kr Potassium alcium Scandium T itaniu m V anadiu m hromium Manganese Iron obalt Nickel opper Zinc Gallium Germanium rsenic Selenium romine Krypton Rb Sr Y Zr Nb Mo T c Ru Rh Pd g d In Sn Sb T e Rubidium Strontium Yttrium Zirconium Niobium Molybdenum T echnetiu m Ruthenium Rhodium Palladium Silver admium Indium T i n ntimony T elluriu m Iodine Xenon I 131 Xe s a La f T a W Re s Ir Pt u g T l Pb i Po t Rn aesium arium Lanthanum afnium T antalu m T ungste n Rhenium smium Iridium Platinum Gold Mercury Thallium Lead ismuth Polonium statine Radon * Fr Ra c Francium Radium ctinium * 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 59 Pa Protactinium Nd Neodymium U Uranium Pm Promethium Np Neptunium Sm Samarium Pu Plutonium Eu Europium m mericium Gd Gadolinium m urium Tb T erbiu m 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 2 4 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 /11//N/10
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level
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