Soft clean eraser Soft pencil (type B or HB is recommended)

Size: px

Start display at page:

Download "Soft clean eraser Soft pencil (type B or HB is recommended)"

Gregory Price
6 years ago
Views:

1 * * ambridge International Examinations ambridge rdinary Level EMISTRY 5070/11 Paper 1 Multiple hoice May/June 2015 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or is recommended) 1 hour RE TESE INSTRUTINS 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. NT WRITE IN NY RES. 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 13 printed pages and 3 blank pages. I15 06_5070_11/3RP ULES 2015 [Turn over

2 2 1 The fractional distillation apparatus shown is being used to separate a mixture of two liquids. thermometer is missing from the apparatus. Where should the bulb of the thermometer be placed? water out cold water in heat 2 The table shows the results of two reactions of an aqueous solution of a salt. reagents excess aqueous sodium hydroxide dilute nitric acid and aqueous silver nitrate final observation white precipitate yellow precipitate What is the name of the salt? calcium chloride calcium iodide zinc nitrate zinc sulfate ULES /11/M/J/15

3 3 3 Limestone reacts with hydrochloric acid. hanging which reaction condition does not affect the rate of reaction? concentration of the acid limestone particle size pressure temperature 4 particle contains 34 protons, 45 neutrons and 36 electrons. Which symbol is correct for this particle? Se Se Se 79 34Se 2+ 5 Which molecule contains three shared pairs of electrons between two of its atoms? N 2 6 What happens when sodium chloride melts? ovalent bonds in a giant lattice are broken. Electrons are released from atoms. Electrostatic forces of attraction between ions are overcome. Molecules are separated into ions. 7 Which compound contains only eight covalent bonds? ULES /11/M/J/15 [Turn over

4 4 8 Which substance has metallic bonding? conducts electricity when solid when liquid state of product formed on reaction with oxygen solid gas no reaction solid 9 gas cylinder is placed in each of the four corners of a square room. Each cylinder contains a different gas stored under the same pressure. The gases are released at exactly the same time. Which gas will reach the centre of the room first? ammonia, N 3 argon, r carbon monoxide, chlorine, l 2 10 Powdered calcium carbonate reacts with dilute hydrochloric acid to produce calcium chloride, water and carbon dioxide. Which is the correct ionic equation, including state symbols, for this reaction? a 3 (s) + 2l (aq) al 2(aq) + 2 (l) + 2 (g) a 2+ (aq) (aq) (aq) a 2+ (aq) + 2 (l) + 2 (g) 2 3 (aq) (aq) 2 (l) + 2 (g) a 3 (s) (aq) a 2+ (aq) + 2 (l) + 2 (g) 11 What is the relative molecular mass, M r, of us 4.5 2? dm 3 of ammonia gas is passed over heated copper(ii) oxide. 3u(s) + 2N 3 (g) 3u(s) + N 2 (g) (l) What is the volume of nitrogen formed when measured at the same temperature and pressure as the ammonia? 0.25 dm dm dm dm 3 ULES /11/M/J/15

5 5 13 What are the correct anode (positive electrode) and cathode (negative electrode) products when aqueous copper(ii) sulfate is electrolysed using copper electrodes? anode product cathode product aqueous copper(ii) ions copper metal aqueous copper(ii) ions hydrogen gas oxygen gas copper metal oxygen gas hydrogen gas 14 oncentrated aqueous sodium chloride is electrolysed using inert electrodes. inert electrode +ve ve inert electrode concentrated aqueous sodium chloride Which statement about this electrolysis is correct? hloride ions travel through the solution to the negative electrode. Electrons travel through the solution to the sodium ions. Gases are given off at both electrodes. Sodium is formed at the negative electrode. ULES /11/M/J/15 [Turn over

6 6 15 The diagram shows the energy profile of a chemical reaction. Two energy changes are labelled X and Y. X energy reactants Y products reaction pathway Which statement about the reaction is correct? The activation energy of the reaction is X + Y. The enthalpy change of the reaction is X. The enthalpy change of the reaction is X + Y. The reaction is exothermic. 16 In the graph, curve 1 was obtained by observing the decomposition of 100 cm 3 of 1.0 mol / dm 3 hydrogen peroxide solution, catalysed by manganese(iv) oxide volume of oxygen formed time Which alteration to the original experimental conditions would produce curve 2? adding some 0.1 mol / dm 3 hydrogen peroxide solution lowering the temperature using less manganese(iv) oxide using a different catalyst ULES /11/M/J/15

7 17 The equation shows a redox reaction between iron(ii) chloride and chlorine gas. 7 2Fel 2 + l 2 2Fel 3 Which equation describes the reduction process in this reaction? 2l l 2 + 2e l 2 + 2e 2l Fe 2+ Fe 3+ + e Fe 3+ + e Fe Which row correctly describes the oxides? l 2 3 K 2 Mg S 2 basic acidic acidic amphoteric acidic basic amphoteric acidic amphoteric basic amphoteric acidic amphoteric basic basic acidic 19 Which substance is insoluble in water? ammonium carbonate ammonium nitrate calcium carbonate calcium nitrate 20 In which of these equilibria is the forward reaction favoured by an increase in pressure? 2I(g) 2 (g) + I 2 (g) N 2 4 (g) 2N 2 (g) 2N(g) + 2 (g) 2N 2 (g) Pl 5(g) Pl 3(g) + l 2(g) ULES /11/M/J/15 [Turn over

8 8 21 The ontact process, the aber process and the hydrogenation of fats all involve the use of a catalyst. Which row correctly describes whether the catalyst used in each process is an element or a compound? ontact process aber process hydrogenation of fats compound compound compound compound element element element element compound element element element 22 Which element is sodium? melting point in electrical conduction density in g / cm good good poor good non-metal element forms oxides of the type X 2 and X 3. What is X? aluminium carbon hydrogen sulfur 24 luminium reacts with chromium(iii) oxide as shown. aluminium + chromium(iii) oxide chromium + aluminium oxide Which statements are correct? 1 luminium is more reactive than chromium. 2 similar reaction would also take place between aluminium and iron(iii) oxide. 3 Iron(III) oxide is reduced by another metal in the blast furnace. 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only ULES /11/M/J/15

9 9 25 Using the Periodic Table for the relative atomic masses, which has the least mass? 0.1 moles of silicon dioxide, Si moles of oxygen, moles of lithium, Li 1.0 moles of ammonia, N 3 26 The diagram shows how an underwater iron pipe can be protected from rusting. water metal Z iron pipe Metal Z can be because it is reactive than iron. Which words correctly complete gaps 1 and 2? 1 2 copper less copper more magnesium less magnesium more 27 rass is an alloy. Which statement about brass is correct? It contains a sea of electrons. It contains positive and negative ions which are free to move. It is a compound of a metal and a non-metal. It is a compound of two or more metals. 28 Which item is made from mild steel? a car body a container to store gas in a chemical plant a scalpel for use in an operating theatre a set of cutlery ULES /11/M/J/15 [Turn over

10 29 The table shows the composition of exhaust gases from an internal combustion engine. 10 gas % of the gas in the exhaust fumes gas Y 71 carbon dioxide 14 water vapour 13 carbon monoxide 1 hydrocarbons 0.3 nitrogen oxides 0.2 sulfur dioxide less than What is gas Y? ammonia argon chlorine nitrogen 30 Which two gases do not damage limestone buildings? nitrogen and carbon monoxide nitrogen dioxide and carbon monoxide nitrogen dioxide and carbon dioxide sulfur dioxide and carbon dioxide 31 Iron(III) oxide can be reduced to iron by carbon. Which other element can reduce iron(iii) oxide to iron? copper lead magnesium silver 32 n ammonium salt was added to excess hot aqueous sodium hydroxide. mmonia gas was evolved. When no more ammonia was evolved, aluminium was added to the solution remaining and more ammonia gas was given off. What was the ammonium salt? N 4 l N 4 N 3 (N 4 ) 2 3 (N 4 ) 2 S 4 ULES /11/M/J/15

11 11 33 Two esters have the same molecular formula, What are the names of these two esters? 1 methyl ethanoate 2 ethyl propanoate 3 ethyl methanoate 4 propyl methanoate 1 and 2 1 and 3 2 and 4 3 and 4 34 Which statement is correct? arboxylic acids contain the functional group. Ethanoic acid will react and fizz when copper is added. Ethanol will decolourise acidified potassium manganate(vii). The structure of ethyl ethanoate is. 35 When cracked, one mole of a compound, X, produces one mole of propene and one mole of hydrogen. What type of compound is X? X an alcohol an alkane an alkene a carboxylic acid 36 Which is a correct definition of isomers? atoms with the same relative atomic mass and different structures compounds with the same molecular formula and different structures compounds with the same molecular mass and different structures elements with the same molecular mass and the same structures ULES /11/M/J/15 [Turn over

12 37 Which of the following has not been prepared by reacting a carboxylic acid with an alcohol? 12 n 38 Which of these polymers is a protein? ( 2 3 l ) n ( ) n ( ) n ( 2 3 N) n 39 In the addition polymer poly(propene), what is the simplest ratio of carbon atoms to hydrogen atoms? carbon atoms hydrogen atoms Which statement about vegetable oil and the margarine made from it is correct? oth are liquids at room temperature. oth occur naturally. Margarine has the higher melting point. Vegetable oil has fewer carbon-carbon double bonds than margarine. ULES /11/M/J/15

13 13 LNK PGE ULES /11/M/J/15

14 14 LNK PGE ULES /11/M/J/15

15 15 LNK PGE ULES /11/M/J/15

16 16 T SEET The Periodic Table of the Elements 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 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 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 I Xe s a La f Ta W Re s Ir Pt u g Tl Pb i Po t Rn aesium arium Lanthanum afnium Tantalum Tungsten Rhenium smium Iridium Platinum Gold Mercury Thallium Lead ismuth Polonium statine Radon * Fr Ra c Francium Radium ctinium *58-71 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 Terbium 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 24 dm 3 at room temperature and pressure (r.t.p.). To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the ambridge International Examinations opyright cknowledgements ooklet. This is produced for each series of examinations and is freely available to download at after the live examination series. ULES /11/M/J/15

Cambridge International Examinations Cambridge Ordinary Level

Cambridge International Examinations Cambridge Ordinary Level ambridge International Examinations ambridge rdinary Level EMISTRY 5070/12 Paper 1 Multiple hoice ctober/november 2015 dditional Materials: RE TESE INSTRUTINS FIRST Multiple hoice nswer Sheet Soft clean