Cambridge International Examinations Cambridge International General Certificate of Secondary Education

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1 * * ambridge International Examinations ambridge International General ertificate of Secondary Education HEMISTRY 0620/11 Paper 1 Multiple hoice (ore) May/June 2018 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or H is recommended) 45 minutes RE THESE INSTRUTIONS IRST 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. or 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. The syllabus is approved for use in England, Wales and Northern Ireland as a ambridge International Level1/Level 2 ertificate. This document consists of 14 printed pages and 2 blank pages. I18 06_0620_11/3RP ULES 2018 [Turn over

2 2 1 The diagrams show particles in a container Which two diagrams show the process of evaporation? Which piece of apparatus is used to measure exactly 26.3 cm 3 of a liquid? 3 The melting points and boiling points of pure substances W, X and Y are shown. W X Y melting point / boiling point / The substances are chlorine, ethanol and sulfur. Which row identifies W, X and Y? W X Y chlorine ethanol sulfur ethanol sulfur chlorine sulfur chlorine ethanol sulfur ethanol chlorine

3 4 In which atom is the number of protons equal to the number of neutrons? 3 40 r Na 16 O 5 Which row identifies an alloy, a pure metal and a non-metal? alloy pure metal non-metal brass carbon copper brass copper carbon copper brass carbon copper carbon brass 6 covalent molecule Q contains exactly six shared electrons. What is Q? ammonia, NH 3 chlorine, l 2 methane, H 4 water, H 2 O 7 The lead in a pencil is made of a mixture of graphite and clay. lead When the percentage of graphite is increased, the pencil slides across the paper more easily. Which statement explains this observation? Graphite has a high melting point. Graphite is a form of carbon. Graphite is a lubricant. Graphite is a non-metal. [Turn over

4 8 The equation for the reaction between magnesium and dilute sulfuric acid is shown. The M r of MgSO 4 is Mg + H 2 SO 4 MgSO 4 + H 2 Which mass of magnesium sulfate is formed when 12 g of magnesium completely reacts with dilute sulfuric acid? 5 g 10 g 60 g 120 g 9 What is observed at each electrode when molten lead(ii) bromide is electrolysed using platinum electrodes? negative electrode positive electrode bubbles of a colourless gas bubbles of a brown gas bubbles of a colourless gas bubbles of a colourless gas shiny grey liquid bubbles of a brown gas shiny grey liquid bubbles of a colourless gas 10 Which gas is used as a fuel? argon hydrogen nitrogen oxygen 11 urning fuels is an exothermic reaction. What is meant by the term exothermic? gas is produced. Energy is released. Heat is absorbed. The mass of the fuel decreases.

5 12 The diagram shows a rate of reaction experiment. 5 hydrogen magnesium excess dilute hydrochloric acid at 25 Increasing the concentration of the acid and increasing the temperature both affect the rate of reaction. Which row is correct? increase the concentration of acid increase the temperature decrease rate of reaction decrease rate of reaction decrease rate of reaction increase rate of reaction increase rate of reaction decrease rate of reaction increase rate of reaction increase rate of reaction 13 Water is added to anhydrous copper(ii) sulfate. What happens during the reaction? The copper(ii) sulfate turns blue and the solution formed gets colder. The copper(ii) sulfate turns blue and the solution formed gets hotter. The copper(ii) sulfate turns white and the solution formed gets colder. The copper(ii) sulfate turns white and the solution formed gets hotter. 14 Which equation shows an oxidation reaction? + O 2 O 2 ao 3 ao + O 2 ao + 2Hl al 2 + H 2 O N 2 O 4 2NO 2 [Turn over

6 6 15 ilute nitric acid is added to a solid,. gas, G, is produced which is denser than air and extinguishes a burning splint. What are and G? solid gas G calcium hydrogen calcium carbonate carbon dioxide calcium hydroxide hydrogen calcium oxide carbon dioxide 16 Which statement about oxides is correct? solution of magnesium oxide has a ph less than ph 7. solution of sulfur dioxide has a ph greater than ph 7. Magnesium oxide reacts with nitric acid to make a salt. Sulfur dioxide reacts with hydrochloric acid to make a salt. 17 Which methods are suitable for preparing both zinc sulfate and copper(ii) sulfate? 1 reacting the metal oxide with warm dilute aqueous sulfuric acid 2 reacting the metal with dilute aqueous sulfuric acid 3 reacting the metal carbonate with dilute aqueous sulfuric acid 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only

7 7 18 Two salt solutions, X and Y, are tested. The table shows the results. test X Y a few drops of aqueous sodium hydroxide are added a few drops of dilute nitric acid and a few drops of barium nitrate are added a few drops of dilute nitric acid and a few drops of silver nitrate are added green precipitate formed no change seen white precipitate formed red-brown precipitate formed white precipitate formed no change seen What are X and Y? X Y iron(ii) chloride iron(iii) sulfate iron(iii) chloride iron(iii) sulfate iron(ii) sulfate iron(iii) chloride iron(iii) sulfate iron(iii) chloride 19 Which element is in the same period of the Periodic Table as silicon? germanium scandium sodium strontium 20 Which statement about the halogens is correct? sample of bromine reacts with potassium chloride solution. sample of bromine reacts with potassium iodide solution. sample of chlorine has a higher density than a sample of bromine. sample of chlorine is a darker colour than a sample of bromine. [Turn over

8 21 Which row shows the catalytic activity of transition elements and their compounds? 8 catalytic activity of transition elements catalytic activity of compounds of transition elements good good good poor poor good poor poor 22 Which statement about the noble gases is not correct? Noble gases are diatomic molecules. Noble gases are unreactive gases. Noble gases have full outer electron shells. The noble gas argon is used in lamps. 23 The following statements are made about the metals copper, iron, magnesium and zinc. 1 Their oxides are acidic. 2 They all conduct electricity in the solid state. 3 They all have high melting points. 4 They all react with dilute acids to form hydrogen. Which statements are correct? 1 and 2 1 and 4 2 and 3 3 and 4

9 9 24 Three metals, X, Y and Z, were reacted with water. The oxides of the same three metals were also heated strongly with carbon. The results are shown. metal X reaction of the metal with water vigorous reaction with cold water reaction of the metal oxide with carbon no reaction Y no reaction metal and carbon dioxide produced Z no reaction observed with cold water but reaction observed with steam no reaction What is a correct conclusion about X, Y and Z? X is sodium and Y is magnesium. X is the least reactive and Y is the most reactive. Z is less reactive than Y. Z is magnesium and Y is copper. 25 In a blast furnace, iron ore is mixed with coke and limestone, and heated in hot air. ompound R is formed. ompound R then reduces the iron ore to iron. Which equation shows the formation of compound R? + O 2 O 2 O 2 + 2O ao 3 ao + O 2 ao + SiO 2 asio 3 26 Which statement explains why aluminium is used in the manufacture of aircraft? It conducts heat well. It has a low density. It is a good conductor of electricity. It is easy to recycle. [Turn over

10 27 ry air is passed over hot copper until all the oxygen has reacted. 10 dry air copper heat The volume of gas at the end of the reaction is 120 cm 3. What is the starting volume of dry air? 132 cm cm cm cm 3 28 steel bicycle which had been left outdoors for several months was starting to rust. What would not reduce the rate of corrosion? Remove the rust and paint the bicycle. Remove the rust and store the bicycle in a dry shed. Remove the rust and wipe the bicycle with a clean, damp cloth. Remove the rust and wipe the bicycle with an oily cloth. 29 Which statements about water are correct? 1 Household water contains dissolved salts. 2 Water for household use is filtered to remove soluble impurities. 3 Water is treated with chlorine to kill bacteria. 4 Water is used in industry for cooling. 1, 2, 3 and 4 1, 2 and 3 only 1, 3 and 4 only 2, 3 and 4 only 30 armers use fertilisers to replace minerals in the soil that have been removed by the crops they grow. Which elements in the soil are replaced by adding fertilisers? a, P, O K, O, S N, K, P N, O, S

11 11 31 Which statement is correct? tmospheric carbon dioxide is not a cause of climate change. tmospheric methane is produced by respiration. urning natural gas decreases the level of carbon dioxide in the atmosphere. ecomposition of vegetation causes an increase in atmospheric methane. 32 Which statement about sulfur and its compounds is not correct? Sulfur dioxide is used as a food preservative. Sulfur dioxide turns acidified aqueous potassium manganate(vii) from purple to colourless. Sulfur forms a basic oxide. Sulfur is used in the manufacture of sulfuric acid. 33 Which process is used to convert limestone (calcium carbonate) into lime? electrolysis fractional distillation incomplete combustion thermal decomposition 34 Lime is used to treat an industrial waste. untreated waste treated waste lime Which change occurs in the treatment? untreated waste treated waste acidic neutral alkaline acidic alkaline neutral neutral acidic [Turn over

12 12 35 What is not the correct use of the fraction named? name of fraction use fuel oil making waxes gas oil fuel in diesel engines kerosene jet fuel naphtha making chemicals 36 our organic compounds are listed. ethane ethanoic acid ethanol ethene Which bond do all four compounds contain? H O OH 37 The first three members of a homologous series are shown. Why do these molecules represent a homologous series? because they contain fluorine and carbon atoms because they have saturated bonds because they have the same functional group because they react differently from each other 38 Which substances can be obtained by cracking hydrocarbons? ethanol and ethene ethanol and hydrogen ethene and hydrogen ethene and poly(ethene)

13 13 39 Which reaction is used to make ethanol? adding steam to ethene addition polymerisation fractional distillation of petroleum reacting ethene with aqueous bromine 40 Polymers are long-chain molecules made from small molecules linked together. our polymers or types of polymer are listed. 1 carbohydrates 2 nylon 3 proteins 4 Terylene Which of these polymers or types of polymer are synthetic? 1 and 3 1 and 4 2 and 3 2 and 4 [Turn over

14 14 LNK PGE

15 15 LNK PGE 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.

16 16 Group The Periodic Table of Elements 1 H hydrogen 1 2 He 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 r 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 Hf 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 e iron Ru ruthenium Os osmium Hs 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 Hg mercury n copernicium 114 l flerovium 116 Lv livermorium 7 N nitrogen P phosphorus s arsenic Sb antimony i bismuth O oxygen S sulfur Se selenium Te tellurium Po polonium 9 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 Ho holmium Es einsteinium 68 Er erbium m fermium 69 Tm thulium Md mendelevium 70 Yb ytterbium No nobelium 71 Lu lutetium Lr lawrencium