* * Cambridge International Examinations Cambridge Ordinary Level. CHEMISTRY 5070/11 Paper 1 Multiple Choice October/November 2017.

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1 * * ambridge International Examinations ambridge rdinary Level EMISTRY 5070/11 Paper 1 Multiple hoice ctober/november 2017 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, 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 16 printed pages. I17 11_5070_11/6RP ULES 2017 [Turn over

2 1 purple pill is placed in a beaker of water. The beaker is left for several hours. 2 The diagram shows the appearance of the water when the pill is added and several hours later. water several hours pale purple solution purple pill Which statement explains why this change occurs? iffusion occurs because the pill is coloured. iffusion occurs faster at higher temperatures. iffusion occurs from an area of high concentration to one of lower concentration. Gases diffuse faster than liquids. 2 The results of two tests on solution X are shown. reagent added observation on adding a few drops of reagent observation on adding an excess of reagent aqueous sodium hydroxide white precipitate precipitate dissolves aqueous ammonia white precipitate precipitate remains Which ion is present in solution X? l 3+ a 2+ u 2+ Zn 2+ 3 Which diagram shows the arrangement of particles inside a balloon containing a mixture of the gases nitrogen and oxygen? key nitrogen atom oxygen atom ULES /11//N/17

3 3 4 student follows the rate of the reaction between marble chips, a 3, and dilute hydrochloric acid. a 3 + 2l al Which diagrams show apparatus that is suitable for this experiment? hydrochloric acid marble chips 1 2 measuring cylinder water hydrochloric acid marble chips balance loose plug 3 4 hydrochloric acid burette hydrochloric acid burette gas syringe marble chips marble chips 1 and 2 only 1 and 3 1 and 4 only 1, 2 and 4 5 Equal masses of methane gas are stored under different conditions. Under which set of conditions does the methane gas occupy the smallest volume? 0 and atmospheric pressure 0 and twice atmospheric pressure 30 and atmospheric pressure 30 and twice atmospheric pressure ULES /11//N/17 [Turn over

4 6 particle of an isotope of sulfur contains 18 neutrons and 18 electrons. What is the symbol for this particle? S S S 16 S 7 When two elements react together, a compound is formed. Which statement is correct? Equal masses of the elements must be used. The compound shows similar chemical properties to those of the elements. The elements must both be non-metals. When the elements react together, ionic or covalent compounds form. 8 Which statement is correct for all ionic compounds? They dissolve in water. They are formed when metals share electrons with non-metals. They conduct electricity in the molten state. They conduct electricity in the solid state. 9 When a piece of sodium is heated in air, it reacts with oxygen to form the ionic compound sodium oxide, Na 2. In terms of electrons, which statement correctly explains what happens when sodium reacts with oxygen? n oxygen atom shares two electrons with two sodium atoms. sodium atom loses two electrons which are transferred to an oxygen atom. sodium atom shares its outer shell electron with two oxygen atoms. Two sodium atoms each lose one electron which are both transferred to one oxygen atom. 10 The relative atomic mass of chlorine is What is the mass of 2 moles of chlorine gas? g 35.5 g 71 g 142 g ULES /11//N/17

5 11 The empirical formula of a liquid compound is 2 4. To find the empirical formula, it is necessary to know 5 the density of the compound. the percentage composition by mass of the compound. the relative molecular mass of the compound. the volume occupied by 1 mole of the compound g of hydrated copper(ii) sulfate crystals are heated to produce anhydrous copper(ii) sulfate and water vapour. us (s) us 4 (s) (g) What is the mass of anhydrous copper(ii) sulfate formed? [M r : us 4, 160; 2, 18] 9.0 g 16.0 g 22.5 g 25.0 g 13 ne mole of an organic compound, Q, is completely burnt in oxygen and produces exactly three moles of water. Which compound is Q? butane, 4 10 ethanol, 2 5 propane, 3 8 propanol, luminium is produced by the electrolysis of molten aluminium oxide. What is the correct equation for the reaction at the positive electrode? l l e l e l 2 + 4e e ULES /11//N/17 [Turn over

6 6 15 When aqueous copper(ii) sulfate is electrolysed using copper electrodes, which observations are correct? positive electrode negative electrode intensity of blue colour of electrolyte electrode becomes smaller electrode becomes bigger constant electrode becomes smaller gas given off fades gas given off electrode becomes bigger fades gas given off gas given off constant 16 Three different solutions were electrolysed using inert electrodes. solution 1 solution 2 solution 3 aqueous sodium chloride concentrated hydrochloric acid dilute sulfuric acid Which solutions produce hydrogen at the negative electrode? 1, 2 and 3 1 and 2 only 1 only 2 and 3 only 17 Under certain conditions nitrogen reacts with oxygen to form N 2. 2N 2 (g) + 2 (g) 2N 2 (g) The energy profile diagram for this reaction is shown. energy 2N 2 (g) + 2 (g) +447 kj / mol 2N 2 (g) +164 kj / mol progress of reaction What is the activation energy for the reverse reaction? 447 kj / mol 283 kj / mol kj / mol +283 kj / mol ULES /11//N/17

7 7 18 The formation of liquid water from hydrogen and oxygen may occur in three stages (g) + 2 (g) 4(g) + 2(g) 2 4(g) + 2(g) 2 2 (g) (g) 2 2 (I) Which stages are endothermic? 1, 2 and 3 1 only 2 only 3 only 19 Sulfur trioxide is produced by the following reaction. 2S 2 (g) + 2 (g) 2S 3 (g) = 195 kj Which change in conditions would produce a greater amount of S 3 at equilibrium? adding a catalyst increasing the pressure increasing the temperature removing some S 2 and 2 20 chemist investigated the rate of the reaction between ethene and hydrogen using a nickel catalyst. 2 4 (g) + 2 (g) Ni 2 6 (g) The chemist carried out three experiments under different conditions. experiment number pressure / atmospheres particle size of catalyst 1 1 powder powder 3 1 large pieces Which row is correct? comparison of the rates of experiments 1 and 2 comparison of the rates of experiments 1 and 3 1 greater than 2 1 greater than 3 1 greater than 2 3 greater than 1 2 greater than 1 1 greater than 3 2 greater than 1 3 greater than 1 ULES /11//N/17 [Turn over

8 21 Which change always occurs when a metal atom is oxidised? 8 It becomes positively charged. It combines with oxygen. It gains an electron. It gains a proton. 22 Which statement is correct? mmonia is produced when an ammonium salt is warmed with a dilute acid. mphoteric oxides are oxides of certain metals. neutral solution does not contain hydroxide ions. Soil with a high p can be neutralised by adding lime, a() Which reagent can be used to react with dilute hydrochloric acid to prepare silver chloride? aqueous silver nitrate solid silver solid silver carbonate solid silver oxide 24 The table shows some symbols and their meanings. symbol cat cat meaning reaction goes to completion reaction is reversible catalyst required for reaction no catalyst is required for reaction Which symbols should be used in the equation for the aber process? and cat and cat and cat and cat ULES /11//N/17

9 9 25 Nitrogenous fertilisers can cause eutrophication to occur in rivers. Eutrophication involves the five stages listed. 1 The fertiliser is washed into the river. 2 xygen levels become depleted in the river. 3 Plants die. 4 Plants begin to decay. 5 Plants in the river grow at an increased rate. In which order do these five stages occur during eutrophication? first last Three suggested uses of sulfuric acid are listed. 1 as battery acid 2 to make ammonia from ammonium salts 3 to make fertilisers Which are correct uses of sulfuric acid? 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only 27 The total number of electrons in one atom of element Q is 17 and in one atom of element R is 19. Which statement about elements Q and R is correct? Q and R react together to form a covalent compound. Q forms positive ions. R has more outer shell electrons than Q. R is more metallic than Q. ULES /11//N/17 [Turn over

10 28 Which row shows the correct catalyst for each industrial process? 10 manufacture of sulfuric acid manufacture of ammonia manufacture of margarine nickel iron vanadium(v) oxide nickel vanadium(v) oxide iron vanadium(v) oxide iron nickel vanadium(v) oxide nickel iron 29 Which metal is attached to underground pipes made of iron, to provide sacrificial protection from corrosion? g u Mg Pb 30 The diagram shows a circuit used to test the electrical conductivity of strips of solid materials. If the material conducts, the bulb lights. Strips of brass, nylon and zinc are each tested separately by connecting them into the circuit. bulb For which strips does the bulb light? strip of solid material brass, nylon and zinc brass and nylon only nylon and zinc only zinc and brass only ULES /11//N/17

11 11 31 ctane, 8 18, is a hydrocarbon that undergoes combustion in a petrol engine....w X Y Z... 2 Which row shows the figures needed to balance the equation? W X Y Z The diagram shows part of the carbon cycle. carbon dioxide in the air P Q R giraffe What are processes P, Q and R? tree power station using wood chips as fuel P Q R combustion photosynthesis respiration photosynthesis combustion respiration respiration combustion photosynthesis respiration photosynthesis combustion ULES /11//N/17 [Turn over

12 12 33 F compounds were used as aerosol propellants. The structure of one F compound is shown. F l F F Which element in this compound causes a depletion of ozone in the atmosphere? carbon chlorine fluorine hydrogen 34 What is removed or destroyed when water is desalinated to make it drinkable? bad odours harmful bacteria sodium chloride solid particles 35 ompounds S and T both contain two elements only. The compounds have the following properties. They both burn in air to form carbon dioxide and water only. They both react with chlorine by substitution. S has a higher boiling point than T. What could compounds S and T be? S T ethane propane ethene propene propane ethane propene ethene ULES /11//N/17

13 13 36 Which row correctly describes alkenes? general formula result when shaken with aqueous bromine n 2n+2 no change n 2n+2 the aqueous bromine is decolourised n 2n no change n 2n the aqueous bromine is decolourised 37 The table contains statements about processes by which ethanol is produced on a large scale from ethene and from glucose. from ethene from glucose Which rows are correct? 1 reaction is faster at 300 than at 200 reaction is faster at 100 than at 30 2 produces pure ethanol produces a dilute aqueous solution of ethanol 3 uses a catalyst uses a catalyst 4 uses steam produces carbon dioxide 1, 2 and 3 1 and 4 2, 3 and 4 2 and 3 only 38 The structure of an ester is shown. What is the name of this ester? ethyl propanoate methyl propanoate propyl ethanoate propyl methanoate ULES /11//N/17 [Turn over

14 14 ULES /11//N/17 39 Which compound has a p of less than 7 in aqueous solution?

15 15 40 The diagram shows the repeat unit of a polymer. 2 3 n Which row correctly identifies the monomer and type of polymerisation involved in making this polymer? monomer type of polymerisation addition 2 5 condensation 2 5 addition 3 condensation 3 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. 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. 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/17

16 16 ULES /11//N/17 Group The Periodic Table of Elements 1 hydrogen 1 2 e helium 4 I II III IV V VI VII VIII 3 Li lithium 7 4 e beryllium 9 atomic number atomic symbol Key name relative atomic mass 11 Na sodium Mg magnesium K potassium a calcium Rb rubidium Sr strontium s caesium a barium Fr francium 88 Ra radium 5 boron l aluminium Ga gallium In indium Tl thallium carbon Si silicon Ge germanium Sn tin Pb lead Ti titanium Zr zirconium f hafnium Rf rutherfordium 23 V vanadium Nb niobium Ta tantalum b dubnium 24 r chromium Mo molybdenum W tungsten Sg seaborgium 25 Mn manganese Tc technetium 75 Re rhenium h bohrium 26 Fe iron Ru ruthenium s osmium s hassium 27 o cobalt Rh rhodium Ir iridium Mt meitnerium 28 Ni nickel Pd palladium Pt platinum s darmstadtium 29 u copper g silver u gold Rg roentgenium 30 Zn zinc d cadmium g mercury n copernicium 114 Fl flerovium 116 Lv livermorium 7 N nitrogen P phosphorus s arsenic Sb antimony i bismuth oxygen S sulfur Se selenium Te tellurium Po polonium 9 F fluorine l chlorine r bromine I iodine t astatine 10 Ne neon r argon Kr krypton Xe xenon Rn radon 21 Sc scandium Y yttrium lanthanoids actinoids 57 La lanthanum c lanthanoids actinoids The volume of one mole of any gas is 24 dm 3 at room temperature and pressure (r.t.p.). actinium 58 e cerium Th thorium Pr praseodymium Pa protactinium Nd neodymium U uranium Pm promethium 93 Np neptunium 62 Sm samarium Pu plutonium 63 Eu europium m americium 64 Gd gadolinium m curium 65 Tb terbium k berkelium 66 y dysprosium f californium 67 o holmium Es einsteinium 68 Er erbium Fm fermium 69 Tm thulium Md mendelevium 70 Yb ytterbium No nobelium 71 Lu lutetium Lr lawrencium

This resource contains three different versions of the periodic table, including a blank one for colouring!

Teaching notes This resource contains three different versions of the periodic table, including a blank one for colouring! It also contains tables of the Group 0, 1 and 7 elements with a few columns for