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 EMISTRY 0620/12 Paper 1 Multiple hoice (ore) October/November 2017 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or is recommended) 45 minutes 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. The syllabus is approved for use in England, Wales and Northern Ireland as a ambridge International Level1/Level 2 ertificate. This document consists of 15 printed pages and 1 blank page. I17 11_0620_12/3RP ULES 2017 [Turn over

2 1 The melting points and boiling points of four elements are shown. 2 element melting point / boiling point / W 7 60 X Y Z In which elements do the particles vibrate about fixed positions at 0? W and X W and Z X and Y Y and Z 2 The apparatus used to separate a mixture is shown. mixture funnel filter paper What is the mixture? aqueous calcium chloride and aqueous calcium nitrate calcium carbonate and aqueous calcium chloride ethanol and water sand and calcium carbonate 3 uring an experiment a measurement is recorded in cm 3. Which apparatus is used? balance measuring cylinder stopclock thermometer ULES /12/O/N/17

3 3 4 Substance Q boils at 445 and is a yellow solid at room temperature. Which temperature could be the melting point of pure Q? 9 72 to to Which diagram shows a mixture of an element and a compound? 6 Which pair of atoms contains the same number of neutrons? 59 o and 28 Ni 64 u and 29 u 64 u and 30 Zn 65 u and 30 Zn 7 In which row do the properties described match the type of bonding? melting point electrical conductivity when liquid type of bonding high does not conduct ionic low conducts covalent low conducts ionic low does not conduct covalent ULES /12/O/N/17 [Turn over

4 8 Which statement explains why graphite is used a lubricant? 4 ll bonds between the atoms are weak. It conducts electricity. It has a low melting point. Layers in the structure can slide over each other. 9 What is the relative formula mass of magnesium nitrate, Mg(NO 3 ) 2? The diagram shows the electrolysis of two solutions using inert electrodes. P Q R S + + dilute sulfuric acid concentrated aqueous sodium chloride Which substance is made at each electrode? P Q R S hydrogen oxygen chlorine sodium hydrogen oxygen sodium chlorine oxygen hydrogen chlorine hydrogen oxygen hydrogen hydrogen chlorine ULES /12/O/N/17

5 5 11 Two chemical processes are described. uring the combustion of ethanol, energy is uring the electrolysis of aqueous sodium chloride, energy is Which words complete gaps 1 and 2? 1 2 given out given out given out taken in taken in given out taken in taken in 12 Water is added to anhydrous copper(ii) sulfate in a test-tube. The mixture becomes hot. Which type of reaction and energy level diagram apply to this reaction? type of reaction energy level diagram reactants endothermic energy products products endothermic energy reactants reactants exothermic energy products products exothermic energy reactants ULES /12/O/N/17 [Turn over

6 13 The mass of a beaker and its contents is plotted against time. 6 Which graph represents what happens when sodium carbonate reacts with an excess of dilute hydrochloric acid in an open beaker? mass mass mass mass 0 0 time 0 0 time 0 0 time 0 0 time 14 When blue copper(ii) sulfate is heated, a white solid and water are formed. The white solid turns blue and gives out heat when water is added to it. Which terms describe the blue copper(ii) sulfate and the reactions? the blue copper(ii) sulfate is reactions a mixture can be reversed a mixture cannot be reversed hydrated can be reversed hydrated cannot be reversed ULES /12/O/N/17

7 7 15 n experiment was carried out to find the rate of reaction when 1 g of solid X reacts with 100 cm 3 of solution Y. gas syringe solid X solution Y The experiment took place too quickly for measurements to be made. Which change could be made to slow down the reaction? add a catalyst decrease the concentration of solution Y decrease the particle size of solid X increase the temperature 16 The equations for two reactions P and Q are given. P 2NaNO 2 + O 2 2NaNO 3 Q 2gO 2g + O 2 In which of these reactions does oxidation of the underlined substance occur? P Q 17 What is not a typical characteristic of acids? They react with alkalis producing water. They react with all metals producing hydrogen. They react with carbonates producing carbon dioxide. They turn blue litmus paper red. ULES /12/O/N/17 [Turn over

8 8 18 Elements Q and R both burn in air. The oxides formed both dissolve in water. The solution of the oxide formed from element Q turns Universal Indicator red. The solution of the oxide formed from element R turns Universal Indicator blue. What are Q and R? Q R carbon sulfur sodium magnesium sodium sulfur sulfur sodium 19 opper(ii) sulfate can be prepared by adding excess copper(ii) carbonate to sulfuric acid. Why is an excess of copper(ii) carbonate added? to ensure all the copper(ii) carbonate has reacted to ensure all the sulfuric acid has reacted to increase the rate of reaction to increase the yield of copper(ii) sulfate 20 ompound P reacts with hydrochloric acid to produce a gas that turns limewater milky. What is P? sodium carbonate sodium chloride sodium hydroxide sodium sulfate 21 Which statement about nitrogen and phosphorus is not correct? oth are in the same group of the Periodic Table. oth are in the same period of the Periodic Table. oth are non-metals. oth have the same number of electrons in their outer shell. ULES /12/O/N/17

9 22 Sodium and rubidium are elements in Group I of the Periodic Table. Which statement is correct? 9 Sodium atoms have more electrons than rubidium atoms. Sodium has a lower density than rubidium. Sodium has a lower melting point than rubidium. Sodium is more reactive than rubidium. 23 Which properties do the elements chromium, iron and vanadium have in common? 1 They all conduct electricity. 2 They, or their compounds, can act as catalysts. 3 They all form coloured compounds. 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only 24 Why is argon gas used to fill electric lamps? It conducts electricity. It glows when heated. It is less dense than air. It is not reactive. 25 What is a property of all metals? conduct electricity hard low melting points react with water 26 Which process is used to extract iron from hematite in the blast furnace? electrolysis reduction with carbon monoxide reduction with lime thermal decomposition ULES /12/O/N/17 [Turn over

10 10 27 Some reactions of three metals are listed in the table. metal metal reacts with dilute hydrochloric acid metal oxide is reduced by carbon P yes yes Q yes no R no yes What is the order of reactivity of the metals? most reactive least reactive P Q R P R Q Q P R R P Q 28 Which uses of the metals shown are both correct? aluminium copper aircraft bodies electrical wiring car bodies aircraft bodies chemical plant cooking utensils food containers chemical plant 29 The flow chart shows stages in the treatment of river water to produce drinking water. river water settling tank stage X stage Y drinking water What occurs at stages X and Y? X Y distillation chlorination distillation filtration filtration chlorination filtration distillation ULES /12/O/N/17

11 11 30 Which element in Group VI is a component of air? argon nitrogen oxygen sulfur 31 Iron is a metal that rusts in the presence of oxygen and water. Mild steel is used for and is prevented from rusting by Stainless steel does not rust. It is produced by iron with another metal. Which words complete gaps 1, 2 and 3? car bodies greasing covering car bodies painting mixing cutlery greasing covering cutlery painting mixing 32 chemical reaction is carried out on substance X. gas is produced that turns red litmus paper blue. What is this reaction? the reaction of an acid with a metal carbonate the reaction of an acid with an ammonium salt the reaction of an alkali with a metal carbonate the reaction of an alkali with an ammonium salt ULES /12/O/N/17 [Turn over

12 12 33 Some marble chips (calcium carbonate) are heated strongly and substances X and Y are formed. Substance X is a white solid that reacts with water, giving out heat. Substance Y is a colourless gas. What are substances X and Y? X Y calcium chloride oxygen calcium hydroxide carbon dioxide calcium oxide carbon dioxide calcium sulfate oxygen 34 The structures of four organic compounds are shown. S T U V Which compounds are unsaturated? S only T and U U only V only 35 Which statement is not correct? Petroleum is a mixture of hydrocarbons. The main constituent of natural gas is ethane. The naphtha fraction of petroleum is used for making chemicals. When natural gas burns in air, carbon dioxide and water are formed. 36 Which equation represents the complete combustion of butane, 4 10? O O O 2 8O O O 2 8O O O 2 4O ULES /12/O/N/17

13 13 37 X, Y and Z are three hydrocarbons. X 2 = 2 Y 3 = 2 Z 3 2 = 2 What do compounds X, Y and Z have in common? 1 They are all alkenes. 2 They are all part of the same homologous series. 3 They all have the same boiling point. 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only 38 The table shows bonds that are present and bonds that are not present in compound X. bond = O =O O What type of compound is X? a carboxylic acid an alcohol an alkane an alkene 39 The diagram shows a reaction sequence. X Y Z butane ethene ethanol carbon dioxide and water Which row names the processes X, Y and Z? X Y Z cracking fermentation respiration cracking hydration combustion distillation fermentation respiration distillation hydration combustion ULES /12/O/N/17 [Turn over

14 14 ULES /12/O/N/17 40 Molecules of a substance react together as shown. + + Which type of reaction has taken place? cracking oxidation polymerisation reduction

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. ULES /12/O/N/17

16 16 ULES /12/O/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 Os 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 O 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