0620 s08 qp_1

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w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education 0620/01 CHEMISTRY Paper 1 Multiple Choice May/June 2008 45 Minutes Additional Materials: *8469352397* Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 16. You may use a calculator. This document consists of 15 printed pages and 1 blank page. IB08 06_0620_01/RP © UCLES 2008 [Turn over

2 1 A yellow precipitate is formed in the experiment shown. flat dish containing distilled water five drops of aqueous potassium iodide five drops of aqueous lead(II) nitrate yellow precipitate forms after a few minutes How is the precipitate formed? A B Particles collide, react and then diffuse. C Particles diffuse, collide and then react. D 2 Particles collide, diffuse and then react. Particles diffuse, react and then collide A student is asked to measure the time taken for 4.00 g of magnesium carbonate to react completely with 25.0 cm3 (an excess) of dilute hydrochloric acid. Which pieces of apparatus does the student need? A B balance, clock, thermometer C balance, pipette, thermometer D 3 balance, clock, pipette clock, pipette, thermometer Chromatography and fractional distillation can be used to separate compounds. In which type of separation is a thermometer needed for checking that complete separation has occurred? A chromatographic separation of two colourless solids B chromatographic separation of two solids of different colours C fractional distillation of two colourless liquids D fractional distillation of two liquids of different colours © UCLES 2008 0620/01/M/J/08

3 4 The nucleon number and proton number of the lithium atom are shown by the symbol 7 Li . 3 What is the correct symbol for the lithium ion in lithium chloride? 6 2 A 5 Li− 6 3 B Li+ C 7 3 Li+ 7 3 D Li− The table shows the numbers of particles present in the nuclei of four atoms or ions. protons neutrons electron structure 1 18 22 2,8,8 2 19 20 2,8,8 3 19 21 2,8,8,1 4 20 20 2,8,8,2 Which two particles belong to the same element? A 6 B 1 and 2 C 1 and 4 D 2 and 4 What are the nucleon numbers for carbon and magnesium? carbon magnesium A 6 12 B 6 24 C 12 12 D 7 2 and 3 12 24 Which of the following can be used as a lubricant? graphite a liquid fraction from petroleum A   B   C   D   © UCLES 2008 0620/01/M/J/08 [Turn over

4 8 The diagram shows the outer shell electron arrangement of compound J that contains the elements Y and Z. Y Y Z Y What type of compound is J? A B a macromolecule C covalent D 9 an alloy ionic The electronic structures of atoms P and Q are shown. key P Q = electron P and Q react to form an ionic compound. What is the formula of this compound? A PQ2 B P2Q C P2Q6 10 For which compound is the formula correct? compound formula A ammonium chloride NH3Cl B copper(II) sulphide CuS C iron(II) sulphide Fe3S D silver nitrate Ag2NO3 © UCLES 2008 0620/01/M/J/08 D P6Q2

5 11 The diagram shows a molecule of vinyl chloride (used to make pvc). key a carbon atom a chlorine atom a hydrogen atom What is the formula of vinyl chloride? A B CH2Cl3 CH3Cl2 C D C2HCl3 C2H3Cl 12 Which apparatus could be used to electroplate an iron nail with copper? A +ve B –ve +ve key –ve copper sheet iron nail aqueous copper(II) sulphate C +ve D –ve +ve –ve aqueous iron(II) sulphate © UCLES 2008 0620/01/M/J/08 [Turn over

6 13 Two elements X and Y form ionic compounds, XBr2 and Y2O3. The compounds are separately melted and electricity is passed through the liquids. What are the products at the cathodes? A bromine and oxygen B bromine and Y C oxygen and X D X and Y 14 Which change can take place during electrolysis? A lead(IV) oxide → lead(II) oxide + oxygen B concentrated hydrochloric acid → hydrogen + chlorine C sodium hydroxide + nitric acid → sodium nitrate + water D lead(II) nitrate + sulphuric acid → lead(II) sulphate + nitric acid 15 The diagram shows an experiment. zinc oxide powder dilute hydrochloric acid 20 °C pH2 aqueous zinc chloride 22 °C pH7 before after Which terms describe the experiment? endothermic neutralisation A   B   C   D   © UCLES 2008 0620/01/M/J/08

7 16 Charcoal and uranium are used as sources of energy. Which of them are oxidised when used in this way? charcoal uranium A   B   C   D   17 Magnesium reacts with acids to produce hydrogen gas. Under which set of conditions is hydrogen formed the most slowly? magnesium acid temperature / °C A ribbon concentrated 40 B ribbon dilute 20 C powder concentrated 40 D powder dilute 20 18 When written as formulae, which compound has the greatest number of oxygen atoms? A calcium oxide B copper(II) oxide C iron(III) oxide D potassium oxide © UCLES 2008 0620/01/M/J/08 [Turn over

8 19 The equation explains the colour change that occurs when aqueous potassium hydroxide is added to aqueous potassium dichromate(VI). + K2Cr2O7 potassium dichromate(VI) 2KOH → 2K2CrO4 potassium chromate(VI) orange + H2O yellow As a result of adding an excess of aqueous potassium hydroxide to aqeous potassium dichromate(VI), what happens to the oxidation state of the chromium and the pH of the reaction mixture? oxidation state of the chromium pH of the mixture A decreases decreases B decreases increases C stays the same decreases D stays the same increases 20 An oxide of element X dissolves in water to form a solution of pH 5. Which line in the table is correct? type of element type of oxide A metallic acidic B metallic basic C non-metallic acidic D non-metallic basic 21 Which statement describes a test for carbon dioxide gas? A It bleaches damp litmus paper. B It relights a glowing splint. C It turns cobalt(II) chloride paper pink. D It turns limewater cloudy. © UCLES 2008 0620/01/M/J/08

9 22 A solution of zinc sulphate can be made by adding an excess either of zinc carbonate or of zinc hydroxide to dilute sulphuric acid. In which forms are these zinc compounds added to the acid? zinc carbonate zinc hydroxide A aqueous aqueous B aqueous solid C solid aqueous D solid solid 23 Which aqueous ion causes a white precipitate to form when acidified aqueous silver nitrate is added to it? A chloride B iodide C nitrate D sulphate 24 What is the colour of gaseous chlorine and of solid sodium chloride? chlorine sodium chloride A colourless yellow-green B colourless white C yellow-green yellow-green D yellow-green white 25 The Group I elements lithium and potassium are tested. Which element has the higher melting point and which element reacts more vigorously with water? higher melting point more vigorous reaction with water A lithium lithium B lithium potassium C potassium lithium D potassium potassium © UCLES 2008 0620/01/M/J/08 [Turn over

10 26 The proton numbers of four elements are shown. Which element forms a singly charged positive ion in its salts? element proton number A 34 B 35 C 36 D 37 27 The table gives information about four elements. Which element is a transition metal? melting point in °C electrical conductivity density g / cm3 A good 0.97 98 B good 7.86 1535 C poor 2.33 1410 D poor 3.12 –7 28 Which diagram best represents the structure of a solid alloy? A B C 29 Element E • forms an alloy; • has a basic oxide; • is below hydrogen in the reactivity series. What is element E? A carbon B copper C sulphur D zinc © UCLES 2008 0620/01/M/J/08 D

11 30 The position of metal X in the reactivity series is shown. K Na Mg Fe (H) X Which statements about X and its oxide are correct? reaction of X with dilute hydrochloric acid reaction of oxide of X with carbon A hydrogen formed no reaction B hydrogen formed oxide reduced C no reaction no reaction D no reaction oxide reduced 31 The diagram shows a blast furnace used to extract iron from iron ore. iron ore + coke + limestone waste gases hot air slag molten iron Why is limestone added to the furnace? A to cause the furnace to heat up B to change the ore into iron C to convert impurities in the ore into slag D to produce oxygen for the coke to burn © UCLES 2008 0620/01/M/J/08 [Turn over

12 32 Which uses of the metals shown are both correct? aluminium stainless steel A aircraft bodies car bodies B car bodies aircraft bodies C chemical plant food containers D food containers chemical plant 33 In which industrial process is water essential? A the production of aluminium from bauxite B the production of calcium oxide from limestone C the production of ethanol from ethene D the production of petrol from crude oil 34 Some students are asked to suggest why acetylene, rather than ethanol, is the fuel used for welding metals. Two suggestions are 1 acetylene is a gas but ethanol is a liquid; 2 acetylene burns with a hotter flame. Which suggestions are correct? 1 2 A   B   C   D   © UCLES 2008 0620/01/M/J/08

13 35 The diagrams show four sacks which a farmer has in his barn. 1 2 LIME NITRAM calcium oxide ammonium nitrate 3 4 NITRE SUPER potassium nitrate superphosphate Which sacks should be mixed to make a complete fertiliser, containing all the essential elements needed by plants? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4 36 Which of the following does not produce carbon dioxide? A adding hydrochloric acid to carbon B adding hydrochloric acid to potassium carbonate C burning coke D burning petrol © UCLES 2008 0620/01/M/J/08 [Turn over

14 37 Cholesterol occurs naturally in the body. Its name indicates that it has the same functional group as A B H C C H H H H H H H C C H H C H D H C H C H O H H H H C H 38 Which fuel is a mixture of hydrocarbons? A coal B methane C petroleum D wood 39 In the diagram, which substance could be ethene? State at room temperature gas liquid Is it saturated? Is it saturated? yes yes no A B C 40 Which properties do butane, propene and ethanol all have? burn polymerise A   B   C   D   © UCLES 2008 0620/01/M/J/08 no D O C O H

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