UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY

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1 UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS International General ertificate of Secondary Education EMISTRY 0620/01 Paper 1 Multiple hoice October/November 2006 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, 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. You may use a calculator. I06 11_0620_01/2RP ULES 2006 This document consists of 16 printed pages. [Turn over

2 1 In which change of state do the particles become more widely separated? 2 gas to liquid gas to solid liquid to gas liquid to solid 2 student mixes 25 cm 3 samples of dilute hydrochloric acid with different volumes of aqueous sodium hydroxide. Each time, the student measures the change in temperature. Which piece of apparatus is not needed? beaker clock measuring cylinder thermometer 3 Which piece of apparatus should be used for the accurate measurement of 30.0 cm 3 of a liquid? a beaker a burette a conical flask a measuring cylinder 4 Which number is different for isotopes of the same element? number of electrons number of full shells number of nucleons number of protons ULES /01/O/N/06

3 3 5 The table shows the nucleon numbers and proton numbers of some atoms. nucleon number proton number ow many are atoms of non-metallic elements? The table shows the electronic structures of four atoms. atom electronic structure W 2,1 X 2,7 Y 2,8,4 Z 2,8,8 Which two atoms combine to form an ionic compound? W and X W and Y X and Y X and Z 7 Element X forms an acidic, covalent oxide. Which row in the table shows how many electrons there could be in the outer shell of an atom of X? Which atom has twice as many neutrons as protons? e ULES /01/O/N/06 [Turn over

4 9 Magnesium and sulphur each form a chloride. What could be the formulae of these chlorides? 4 magnesium sulphur Mg 2 l S 2 l Mg 2 l Sl 2 Mgl 2 S 2 l Mgl 2 Sl 2 10 gas has the molecular formula NOl. Which diagram could show molecules of the pure gas NOl? key l N O ULES /01/O/N/06

5 11 The electrolysis of concentrated aqueous sodium chloride makes three products. Which products are shown at the correct electrodes? 5 anode (+ve) cathode ( ve) chlorine sodium hydroxide sodium hydroxide chlorine hydrogen sodium sodium hydrogen 12 luminium is extracted from its oxide by electrolysis. To do so, the oxide is dissolved. Which substance is used to dissolve aluminium oxide and where is aluminium deposited during the electrolysis? substance used to dissolve aluminium oxide where aluminium is deposited cryolite anode (+ve) cryolite cathode ( ve) water anode (+ve) water cathode ( ve) 13 Which piece of apparatus is essential to measure the speed of a reaction? accurate balance gas syringe stopwatch thermometer ULES /01/O/N/06 [Turn over

6 14 Equations for two changes P and Q are shown. 6 P Q 2 O(s) 2 O(l) 4 (g) + 2O 2 (g) O 2 (g) O(l) Which of these changes are exothermic? P Q 15 The decomposition of glucose, in aqueous solution, to form ethanol and carbon dioxide is catalysed by an enzyme in yeast. Which change increases the rate of this decomposition? add more water to the solution cool the solution heat the solution to boiling point heat the solution to Which equation shows an oxidation reaction? + O 2 O 2 ao 3 ao + O O O + O 2 N 2 O 4 2NO 2 17 cids react with bases, carbonates and metals. Which of these reactions produce a gas? reaction of acid with a base carbonate metal ULES /01/O/N/06

7 7 18 Which properties does an acid have? 1 reacts with ammonium sulphate to form ammonia 2 turns red litmus blue The diagrams show two experiments, one to make barium chloride and the other to make barium sulphate. dilute hydrochloric acid dilute sulphuric acid aqueous barium hydroxide aqueous barium hydroxide In each experiment, the acid is run into the conical flask until the resulting liquid has p7. What are the next steps to obtain samples of the solid salts? barium chloride barium sulphate crystallisation crystallisation crystallisation filtration filtration crystallisation filtration filtration ULES /01/O/N/06 [Turn over

8 20 Which piece of equipment can be used to show that a gas is hydrogen? 8 glowing flame limewater damp litmus paper splint splint 21 The statements are about metals and their oxides. Metals X electrons to form ions. The oxides of metals are Y. Which words correctly complete the statements? X Y gain acidic gain basic lose acidic lose basic 22 The diagram shows one stage in the manufacture of nitric acid from ammonia. heated platinum gauze ammonia and air products What could be the use of the platinum gauze in this process? as a base as a catalyst as a filter as a fuel ULES /01/O/N/06

9 23 n element does not conduct electricity but it does exist as diatomic molecules. In which area of the Periodic Table is the element to be found? 9 24 Which properties of helium explain its use in filling balloons? low density its unreactivity 25 The diagram shows apparatus used to test the reactivity of calcium, copper and magnesium with steam. steam gas metal heat Which metals react with steam to form hydrogen? calcium copper magnesium ULES /01/O/N/06 [Turn over

10 26 Which types of steel are used in chemical plants and machinery? 10 chemical plant machinery mild steel mild steel mild steel stainless steel stainless steel mild steel stainless steel stainless steel 27 In separate experiments, mixtures of uo/ and of MgO/ are strongly heated in the apparatus shown. metal oxide and carbon tube heat limewater What happens to the limewater in these experiments? uo/ MgO/ goes cloudy goes cloudy goes cloudy stays clear stays clear goes cloudy stays clear stays clear 28 Which raw materials are used in the manufacture of iron? bauxite and lime bauxite and limestone hematite and lime hematite and limestone ULES /01/O/N/06

11 11 29 The diagram represents the composition of dry air. Which part shows the percentage of nitrogen in the air? 30 The diagram shows some uses of water in the home For which of these uses is it important for the water to have been purified? 1 only 2 only 3 only 1, 2 and 3 31 The listed pollutants are sometimes found in car exhaust fumes. 1 carbon monoxide 2 nitrogen oxides 3 sulphur dioxide Which of these pollutants are products of the combustion of the fuel? 1 and 2 only 1 and 3 only 2 and 3 only 1, 2 and 3 ULES /01/O/N/06 [Turn over

12 12 32 shopkeeper stores iron nails in an airtight container, as shown in the diagram. tight lid plastic jar air iron nails The nails begin to rust after a few days. ow can the rusting of the nails be prevented? leave the lid off put a drying agent in the jar put the jar in a warm place seal the jar in a bag 33 Two uses of oxygen are 1 burning acetylene in welding, 2 helping the breathing of hospital patients. Which of these uses form carbon dioxide? use 1 use 2 ULES /01/O/N/06

13 13 34 The diagram shows a kiln used to heat limestone. limestone waste gases gas burners product air What is the product and what waste gas is formed? product waste gas lime carbon monoxide lime carbon dioxide slaked lime carbon monoxide slaked lime carbon dioxide 35 The structures of three compounds are shown. O O 3 What are X, Y and Z? X Y Z X Y Z alkane alkene alcohol alkane alkene carboxylic acid alkene alkane alcohol alkene alkane carboxylic acid ULES /01/O/N/06 [Turn over

14 36 ow many oxygen atoms and double bonds are there in one molecule of ethanoic acid? 14 number of oxygen atoms number of double bonds ompounds R and S occur naturally. R is 6 14 and S is 6 12 O 6. Which of the terms hydrocarbon and occurs in crude oil describe R and S? hydrocarbon occurs in crude oil R only R only R only S only S only R only S only S only 38 The diagram shows an ethane molecule. Which compound has chemical properties similar to those of ethane? O O O ULES /01/O/N/06

15 39 The diagram shows the first four members of a homologous series. 15 What is the difference in molecular formula between one member and the next in the series? The diagram shows part of a polymer. Which compound is used as the monomer? ULES /01/O/N/06 [Turn over

16 16 T SEET The Periodic Table of the Elements Group I II III IV V VI VII ydrogen 2 4 e elium 3 7 Li Lithium 4 9 e eryllium 5 11 oron 6 12 arbon 7 14 N Nitrogen 8 16 O Oxygen 9 19 F Fluorine Ne Neon Na Sodium Mg Magnesium l luminium Si Silicon P Phosphorus S Sulphur l hlorine r rgon K Potassium a alcium Sc Scandium Ti Titanium V Vanadium r hromium Mn Manganese Fe Iron o obalt Ni Nickel u opper Zn Zinc Ga Gallium Ge Germanium s rsenic Se Selenium r romine Kr Krypton Rb Rubidium Sr Strontium Y Yttrium Zr Zirconium Nb Niobium 96 Mo Molybdenum Tc Technetium Ru Ruthenium Rh Rhodium Pd Palladium g Silver d admium In Indium Sn Tin Sb ntimony Te Tellurium I Iodine Xe Xenon s aesium Fr Francium a arium 226 Ra Radium 139 La Lanthanum 57 * c ctinium f afnium Ta Tantalum W Tungsten Re Rhenium Os Osmium Ir Iridium Pt Platinum u Gold g Mercury Tl Thallium Pb Lead i ismuth 84 Po Polonium 85 t statine 86 Rn Radon *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 Pa Protactinium Nd Neodymium 238 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.). 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 University of ambridge Local Examinations Syndicate (ULES), which is itself a department of the University of ambridge. ULES /01/O/N/06