UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education

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1 * * UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS International General ertificate of Secondary Education EMISTRY 0620/13 Paper 1 Multiple hoice October/November 2012 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. This document consists of 14 printed pages and 2 blank pages. I12 11_0620_13/3RP ULES 2012 [Turn over

2 2 1 Particles moving very slowly from an area of high concentration to an area of low concentration. Which process is being described above? a liquid being frozen a solid melting a substance diffusing through a liquid a substance diffusing through the air 2 Solid W melts at exactly 54 and boils at exactly 302. Solid X, when dissolved in water and examined using paper chromatography, shows a blue colour and a red colour. Which row is correct? contains only one substance contains more than one substance W and X W X X W W and X 3 Part of the instructions in an experiment reads as follows. What is the best piece of apparatus to use? Quickly add 50 cm 3 of acid. a burette a conical flask a measuring cylinder a pipette ULES /13/O/N/12

3 3 4 The nucleon number of an isotope of rubidium is 85. ow many protons, neutrons and electrons are present in an atom of this isotope? protons neutrons electrons Which row gives the number of electrons in the outer electron shell of fluorine and of neon? 19 F Ne In the molecules 4, l and 2 O, which atoms use all of their outer shell electrons in bonding? and l and l and and O 7 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 ULES /13/O/N/12 [Turn over

4 4 8 compound has the formula 3 O 2. ow should the relative molecular mass, M r, of this compound be calculated? (12 + 1) + 2( ) + 1 (4 12) + (2 1) + 16 (2 12) + (4 1) + (2 16) 9 In separate experiments, electricity was passed through concentrated aqueous sodium chloride and molten lead bromide. What would happen in both experiments? halogen would be formed at the anode. metal would be formed at the cathode. ydrogen would be formed at the anode. ydrogen would be formed at the cathode. 10 The diagram shows an electrolysis experiment using metals X and Y as electrodes. + aqueous solution X Y One of the metals becomes coated with copper. Which metal becomes coated and which aqueous solution is used? metal aqueous solution X rl 3 X ul 2 Y rl 3 Y ul 2 ULES /13/O/N/12

5 11 diagram for the energy change during an exothermic reaction is shown. 5 reactants energy products For which reactions would this be an appropriate diagram? O 2 O O O O 3 + O 2 O 2 none of them 1 and 2 only 2 and 3 only all of them 12 The diagram shows a match. y striking the match, a chemical reaction takes place. Which statements about the chemical reaction are correct? type of reaction reason endothermic because energy is used to strike the match endothermic because energy is given out as the match burns exothermic because energy is used to strike the match exothermic because energy is given out as the match burns ULES /13/O/N/12 [Turn over

6 6 13 Solid copper(ii) sulfate can exist in two different forms, anhydrous and hydrated. One of these forms is blue and the other is white. The change between these two forms is reversible. blue form white form Which is the blue form and how is the change from the blue form to the white form brought about? blue form change to white form anhydrous add water anhydrous heat hydrated add water hydrated heat 14 Which statement describes what happens in the reaction shown? 2Mg + O 2 2MgO + arbon and magnesium are both oxidised. arbon is oxidised and magnesium oxide is reduced. Magnesium is oxidised and carbon dioxide is reduced. Magnesium oxide and carbon dioxide are both reduced. 15 Which change does not increase the speed of reaction between zinc and hydrochloric acid? adding a catalyst decreasing the particle size of the zinc decreasing the temperature using more concentrated acid ULES /13/O/N/12

7 16 Salts X and Y are separately dissolved in water. 7 Samples of the solutions obtained are separately tested with dilute hydrochloric acid and with aqueous sodium hydroxide. In two of the tests, a gaseous product is formed. No precipitate is formed in any of the tests. What are salts X and Y? X Y gno 3 aso 4 aso 4 Na 2 O 3 Na 2 O 3 N 4 l N 4 l gno 3 17 Some reactions involving sodium are shown. Which reaction does not involve the formation of a base? sodium oxide sodium sodium hydroxide sodium chloride 18 arium hydroxide is an alkali. It reacts with hydrochloric acid. ow does the p of the hydrochloric acid change as an excess of aqueous barium hydroxide is added? The p decreases from 14 and becomes constant at 7. The p decreases from 14 to about 1. The p increases from 1 and becomes constant at 7. The p increases from 1 to about 14. ULES /13/O/N/12 [Turn over

8 8 19 compound is a salt if it can neutralise an acid. contains more than one element. dissolves in water. is formed when an acid reacts with a base. 20 The diagram shows an outline of the Periodic Table. W X Y Z Which ionic compound could be formed? W + Y W + Z X + Y X + Z 21 Element X is in Group VII of the Periodic Table. It reacts with aqueous potassium bromide as shown. Which statements about X are correct? X 2 + 2Kr 2KX + r 2 relative atomic mass reactivity greater than that of bromine less reactive than bromine greater than that of bromine more reactive than bromine less than that of bromine less reactive than bromine less than that of bromine more reactive than bromine ULES /13/O/N/12

9 22 The table gives information about four elements. Which element is a transition metal? 9 colour of element electrical conductivity of element colour of oxide black high colourless colourless low white grey high red yellow low colourless 23 Why are weather balloons filled with helium rather than hydrogen? elium is found in air. elium is less dense than hydrogen. elium is more dense than hydrogen. elium is unreactive. 24 The three statements below about aluminium are all correct. 1 luminium has an oxide ore. 2 luminium is extracted from its ore by electrolysis. 3 luminium is used to make cooking utensils. In which of these statements can aluminium be replaced by iron and still be correct? ULES /13/O/N/12 [Turn over

10 10 25 Statement 1: n aluminium alloy containing a small amount of copper is stronger than pure aluminium. Statement 2: lloys are made by mixing molten metals together and allowing them to cool. Which of the following is true? oth statements are correct and statement 2 explains statement 1. oth statements are correct but statement 2 does not explain statement 1. Statement 1 is correct but statement 2 is not correct. Statement 2 is correct but statement 1 is not correct. 26 Iron is extracted from its ore in a last Furnace. ematite, coke, limestone and hot air are added to the furnace. Which explanation is not correct? oke burns and produces a high temperature. ematite is the ore containing the iron as iron oxide. ot air provides the oxygen for the burning. Limestone reduces the iron oxide to iron. 27 ow does the reactivity of potassium compare with that of sodium and how does the reactivity of calcium compare with that of magnesium? reactivity of potassium and sodium reactivity of calcium and magnesium K greater than Na a greater than Mg K greater than Na Mg greater than a Na greater than K a greater than Mg Na greater than K Mg greater than a 28 Untreated water can spread diseases such as cholera. What can be added to drinking water to reduce the spread of such diseases? carbon monoxide chlorine nitrogen monoxide sulfur ULES /13/O/N/12

11 29 Statement 1: The burning of fossil fuels containing sulfur is a cause of acid rain. 11 Statement 2: cid rain contains sulfur dioxide which is formed when sulfur compounds burn in the air. Which of the following is true? oth statements are correct and statement 2 explains statement 1. oth statements are correct, but statement 2 does not explain statement 1. Statement 1 is correct but statement 2 is incorrect. Statement 2 is correct but statement 1 is incorrect. 30 rgon is a noble gas used to fill light bulbs. What is the approximate percentage of argon in air? 1 % 20 % 79 % 99 % 31 The experiment shown was set up to investigate the rusting of iron. iron nails water Rusting occurs in this experiment because of the presence of hydrogen and oxygen. nitrogen and oxygen. nitrogen and water. oxygen and water. 32 What are X and Y in the reaction shown? ammonium chloride + solution X alkaline gas Y X Y hydrochloric acid ammonia hydrochloric acid chlorine sodium hydroxide ammonia sodium hydroxide chlorine ULES /13/O/N/12 [Turn over

12 12 33 Which process does not produce carbon dioxide? combustion of petrol reaction between an acid and a metal hydroxide reaction between an acid and a carbonate respiration 34 Two industrial processes that involve heating are extracting iron from its ore using a blast furnace, making lime. In which of these processes is calcium carbonate used? extracting iron making lime 35 Which structure shows a carboxylic acid? O O O 36 Which method is used to obtain petrol from petroleum? crystallisation diffusion filtration fractional distillation ULES /13/O/N/12

13 13 37 Which group of compounds is part of a homologous series? 4, 2 4, , 3 8, 3 7 O 3 O, 2 5 O, 3 7 O 3 O 2, 3 2 O, O 2 38 itumen is a substance obtained from the fractional distillation of petroleum. Which row describes its boiling point and the size of its molecules? boiling point size of molecules high large high small low large low small 39 hydrocarbon is cracked to make and hydrogen. ompound is formed by the addition polymerisation of. To which homologous series do, and belong? alkene alkane and and and and 40 Which statement about ethanol is not correct? It can be used as a fuel. It can be used as a solvent. It is formed by reaction between steam and ethane. Its functional group is O. ULES /13/O/N/12

14 14 LNK PGE ULES /13/O/N/12

15 15 LNK PGE ULES /13/O/N/12

16 16 T SEET The Periodic Table of the Elements Group I II III IV V VI VII e ydrogen elium Li e N O F Ne Lithium eryllium oron arbon Nitrogen Oxygen 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 Os Ir Pt u g Tl Pb i Po t Rn aesium arium Lanthanum afnium Tantalum Tungsten Rhenium Osmium 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.). 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 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 /13/O/N/12