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 May/June 2015 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. I15 06_0620_12/2RP ULES 2015 [Turn over
2 1 The diagram shows a sugar lump in a cup of tea. 2 Which two processes must happen to spread the sugar evenly in the tea? first process second process diffusion dissolving dissolving diffusion dissolving melting melting diffusion 2 The results of some tests on a colourless liquid X are shown. oiling point = 102 Universal Indicator turns green What is X? ethanol hydrochloric acid pure water sodium chloride (salt) solution 3 The atomic structures of four particles are shown. particle electrons neutrons protons W X Y Z Which two particles are isotopes? W and X W and Y X and Z Y and Z ULES /12/M/J/15
3 3 4 Q + is an ion of element Q. What has the highest value in the ion? the nucleon number the number of electrons the number of neutrons the proton number 5 Which statements comparing the properties of electrons, neutrons and protons are correct? neutrons and protons are both heavier than electrons only electrons and neutrons are charged 6 Graphite is a form of carbon. Why can graphite be used as a lubricant? Graphite contains delocalised electrons which move throughout the structure. Graphite contains weak covalent bonds so the atoms move easily. Graphite has a low melting point so it easily turns into a liquid. Graphite has weak forces of attraction between layers so they can move. 7 In which compounds are pairs of electrons shared between atoms? 1 methane 2 lead bromide 3 sodium chloride 1 only 2 only 1 and 3 1, 2 and 3 ULES /12/M/J/15 [Turn over
4 4 8 molecule, Z, contains two atoms of oxygen, six atoms of hydrogen and three atoms of carbon. What is the formula of Z? 3 2 O 3 O O O 2 9 opper and hydrogen can each be formed by electrolysis. t which electrodes are these elements formed? copper hydrogen anode anode anode cathode cathode anode cathode cathode 10 The diagram shows the electroplating of a steel object. + copper steel object copper(ii) sulfate solution student made the following statements. 1 The object turns a reddish-brown colour. 2 The copper sulfate solution changes to a paler blue colour. 3 The copper electrode becomes smaller. Which statements are correct? 1, 2 and 3 1 and 2 only 1 and 3 only 2 and 3 only ULES /12/M/J/15
5 5 11 The elements hydrogen and uranium are used as fuels. The compound ethanol is also used as a fuel. Which fuels require oxygen in order to produce heat energy? hydrogen uranium ethanol 12 In which equation does the oxidation of the underlined compound occur? 2uO + O 2 + u Fe 2 O 3 + 3O 2Fe + 3O 2 2Mg + O 2 2MgO MnO 2 + 4l Mnl O + l 2 13 When pink crystals of cobalt(ii) chloride are heated, steam is given off and the colour of the solid changes to blue. ol O ol O What happens when water is added to the blue solid? colour temperature changes to pink decreases changes to pink increases remains blue decreases remains blue increases ULES /12/M/J/15 [Turn over
6 6 14 simple way of making bread includes 1 Mixing flour with a small amount of yeast and some water to make a dough. 2 Leaving the dough in a warm place for the yeast to act on the dough to form carbon dioxide which increases the volume of the dough. Which factors affecting a reaction rate are involved in bread making? temperature use of an enzyme 15 Which statement is not correct? When a base reacts with an ammonium salt, ammonia is given off. When an acid reacts with a base, neutralisation takes place. When an acid reacts with a carbonate, carbon dioxide is given off. When the acidity of a solution increases, the p increases. 16 ydrochloric acid is used to clean metals. The acid reacts with the oxide layer on the surface of the metal, forming a salt and water. Which word describes the metal oxide? alloy base element indicator 17 Which method is used to make the salt copper sulfate? dilute acid + alkali dilute acid + carbonate dilute acid + metal dilute acid + non-metal oxide ULES /12/M/J/15
7 18 Two tests are carried out to identify an aqueous solution of X. 7 test 1 queous sodium hydroxide is added and a blue precipitate is produced. What is X? test 2 ilute nitric acid is added followed by aqueous silver nitrate and a white precipitate is produced. copper carbonate copper chloride iron(iii) carbonate iron(iii) chloride 19 The positions of four elements in the Periodic Table are shown. Which element does not form a compound with chlorine? 20 Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? can be used as a catalyst conducts electricity when solid has low density forms coloured compounds ULES /12/M/J/15 [Turn over
8 8 21 The table shows some properties of the Group I metals. metal melting point / hardness reaction with water lithium 181 moderately soft steady effervescence sodium 98 soft vigorous effervescence potassium 63 very soft very vigorous effervescence rubidium??? What are the properties of rubidium? melts below 63, very soft, reacts explosively with water melts below 63, very soft, reacts slowly with water melts above 181, very soft, reacts explosively with water melts above 181, very soft, reacts slowly with water 22 In the outline of the Periodic Table below, some elements are shown as numbers Which two numbers are metals in the same period? 1 and 2 1 and 7 3 and 5 5 and 6 ULES /12/M/J/15
9 9 23 Which diagram represents an alloy? 24 Which statement is not correct? luminium is used in food containers because of its resistance to corrosion. luminium is used in the manufacture of aircraft because of its strength and low density. Mild steel is used in car bodies because of its strength and low density. Stainless steel is used in chemical plant because of its strength and resistance to corrosion. 25 Which row describes the conditions used to make steel from the iron produced by a blast furnace? calcium oxide (lime) oxygen heat ULES /12/M/J/15 [Turn over
10 10 26 Samples of five different metals, E, F, G, and J were reacted with dilute sulfuric acid using the apparatus shown. gas syringe bung metal dilute sulfuric acid The volume of hydrogen gas collected after one minute was measured. The results are shown on the bar chart volume of gas collected / cm E F G J metal What is the order of reactivity of the metals (most reactive first)? E, F, G,, J G, E,, F, J J, F,, E, G J,, G, F, E 27 The diagram shows stages in producing drinking water. In which tank is chlorine added to the water? reservoir sedimentation tank filtration tank anti-bacterial treatment tank storage tank mains supply ULES /12/M/J/15
11 11 28 Which gas is not present in a sample of clean air? carbon dioxide chlorine oxygen water vapour 29 Which combination of chemical compounds could be used to produce the fertiliser shown? N P K 21 : 16 : 8 SUPERGROW (N 4 ) 3 PO 4, Kl N 4 NO 3, a 3 (PO 4 ) 2 N 4 NO 3, O(N 2 ) 2 N 4 NO 3, K 2 SO 4, (N 4 ) 2 SO 4 30 arbon monoxide is given out from the exhaust of vehicles that burn fossil fuels. Which row shows why carbon monoxide is a pollutant? acidic toxic no no no yes yes no yes yes 31 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. ULES /12/M/J/15 [Turn over
12 32 arbon dioxide and methane are greenhouse gases which contribute to global warming. 12 Which process does not increase global warming? burning fossil fuels decay of organic waste farming cattle for beef growing crops such as sugar cane 33 zinc compound forms carbon dioxide in two different reactions. 1 It is heated strongly. 2 It is added to hydrochloric acid. Which type of reaction occurs in 1 and 2? 1 2 combustion neutralisation combustion oxidation thermal decomposition neutralisation thermal decomposition oxidation 34 Substance X is used to treat industrial waste. X industrial waste p 4 treated waste p 7 What is X and which type of reaction occurs during the treatment? X type of reaction calcium oxide (lime) neutralisation calcium oxide (lime) redox carbon neutralisation carbon redox ULES /12/M/J/15
13 13 35 n organic compound has the molecular structure shown. O Which type of organic compound is this? alcohol alkane alkene carboxylic acid 36 Which statement about petroleum is not correct? It can be separated into useful substances by fractional distillation. It consists mainly of hydrocarbons. It is found underground in many parts of the world. Its main use is for making lubricants and polishes. 37 The structures of four different organic compounds are shown. O O O O ow many different homologous series are represented by these compounds? ULES /12/M/J/15 [Turn over
14 14 38 The structure of a compound, Y, is shown. O O Which row describes some of the physical properties of Y? colourless characteristic smell dissolves in water no no no no no yes yes yes no yes yes yes 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 row correctly describes the production of ethanol and its properties? can be made from glucose can be made from ethene is used as a fuel is used as a solvent ULES /12/M/J/15
15 15 LNK PGE ULES /12/M/J/15
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.). 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. ULES /12/M/J/15
Soft clean eraser Soft pencil (type B or HB is recommended)
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