Edexcel GCE Chemistry - Past Papers
Write your name hereSurnameOther namesCentre NumberCandidate NumberEdexcel GCEChemistryAdvanced SubsidiaryUnit 1: The Core Principles of ChemistryThursday 14 January 2010 – MorningTime: 1 hour 30 minutesCandidates may use a calculator.Paper Reference6CH01/01Total MarksInstructionsblack ink or ball-point pen. UseFillinboxes at the top of this page with your name, centrethenumber and candidate number.all questions. Answerthe questions in the spaces provided Answer– there may be more space than you need.Informationtotal mark for this paper is 80. Themarks for each question are shown in brackets The– use this as a guide as to how much time to spend on each question.labelled with an asterisk (*) are ones where the quality of your Questionswritten communication will be assessed – you should take particular care with your spelling, punctuation and grammar, aswell as the clarity of expression, on these questions.A Periodic Table is printed on the back cover of this paper.Adviceeach question carefully before you start to answer it. Readan eye on the time. Keepto answer every question. TryCheck your answers if you have time at the end.Turn overN35131A 2010 Edexcel Limited.7/7/5/3/*N35131A0124*
SECTION AAnswer ALL the questions in this section. You should aim to spend no more than 20 minutes onthis section. For each question, select one answer from A to D and put a cross in the box .and then mark your new answer withIf you change your mind, put a line through the boxa cross .251 The isotopes of magnesium, 2412Mg and 12Mg, both form ions with charge 2 . Which ofthe following statements about these ions is true?ABoth ions have electronic configuration 1s2 2s2 2p6 3s2.B252 12MgCThe ions have the same number of electrons but different numbers of neutrons.DThe ions have the same number of neutrons but different numbers of protons.2 has more protons than 2412Mg .(Total for Question 1 1 mark)2 Chlorine has two isotopes with relative isotopic mass 35 and 37. Four m/z values aregiven below. Which will occur in a mass spectrum of chlorine gas, Cl2, from an ionwith a single positive charge?A35.5B36C71D72(Total for Question 2 1 mark)Use this space for any rough working. Anything you write in this space will gain no credit.2*N35131A0224*
3 The human body contains around 0.025 g of iodine molecules, I2. Which of thefollowing shows the number of iodine atoms in 0.025 g of I2?The Avogadro constant is 6.02 1023 mol–1.A0.025 6.02 1023126.9B0.025 6.02 1023253.8C253.8 6.02 10230.025D126.9 6.02 10230.025(Total for Question 3 1 mark)4 Which equation represents the reaction for which the enthalpy change is the standardenthalpy change of formation, Hf , of sodium nitrate, NaNO3?A2Na(s) N2(g) 3O2(g) 2NaNO3(s)BNa(s) ½N2(g) 1½O2(g) NaNO3(s)CNa(s) N(g) 3O(g) NaNO3(s)DNa(g) ½N2(g) 1½O2(g) NaNO3(g)(Total for Question 4 1 mark)5 Which equation represents the reaction for which the enthalpy change, H, is the meanbond enthalpy of the C–H bond?A¼CH4(g) ¼C(g) H(g)BCH4(g) C(s) 2H2(g)CCH4(g) C(g) 4H(g)DCH4(g) C(g) 2H2(g)(Total for Question 5 1 mark)*N35131A0324*3Turn over
6 The first ionization energies, in kJ mol–1, of four elements with consecutive atomicnumbers are shown below.A1680B2080C496D738(a) Which element could be an inert gas?(1)ABCD(b) Which element could be X in a covalent compound with formula HX?(1)ABCD(c) Which element could be Y in an ionic compound with formula YH2?(1)ABCD(Total for Question 6 3 marks)4*N35131A0424*
7 The graph below shows the second ionization energy of a series of elements withconsecutive atomic numbers.BSecond ionizationenergy / kJ mol–1ADCAtomic number increasing in steps of 1Which element could be lithium?ABCD(Total for Question 7 1 mark)8 The first five ionization energies, in kJ mol–1, of aluminium are5781817274511 57814 831The orbitals from which the first five electrons are removed during ionization, startingwith the first electron, areA1s 2s 2p 3s 3pB1s 1s 2s 2s 2pC3p 3s 2p 2s 1sD3p 3s 3s 2p 2p(Total for Question 8 1 mark)*N35131A0524*5Turn over
9 Going across the Periodic Table from sodium to aluminium,Athe melting temperature increases.Bthe radius of the atom increases.Cthe radius of the metal ion increases.Dthe bonding in the element changes from metallic to covalent.(Total for Question 9 1 mark)10 Going down Group 1 from lithium to rubidiumAthe radius of the atom decreases.Bthe radius of the ion decreases.Cthe first ionization energy decreases.Dthe polarizing power of the ion increases.(Total for Question 10 1 mark)11 A drop of concentrated nickel(II) sulfate solution, which is green, is placed on moistfilter paper on a microscope slide and the ends of the slide are connected to a 24 V DCpower supply. After ten minutes,Aa blue colour has moved towards the negative terminal and a yellow colourtowards the positive terminal.Ba blue colour has moved towards the positive terminal and a yellow colourtowards the negative terminal.Ca green colour has moved towards the negative terminal but there is no othervisible change.Da green colour has moved towards the positive terminal but there is no othervisible change.(Total for Question 11 1 mark)Use this space for any rough working. Anything you write in this space will gain no credit.6*N35131A0624*
12 The bonding in magnesium oxide, MgO, isAionic.Bmetallic and ionic.Cionic and covalent.Dmetallic and covalent.(Total for Question 12 1 mark)13 Which of the following mixtures could not form when octane, C8H18, is cracked?Apropane penteneBbutane buteneCpentane propeneDheptane ethene(Total for Question 13 1 mark)Use this space for any rough working. Anything you write in this space will gain no credit.*N35131A0724*7Turn over
14 This question is about the organic compounds with skeletal formulae as shown:ABCD(a) Which compound is 2-methylpropane?(1)ABCD(b) Which compound has the molecular formula C5H12?(1)ABCD(c) Which compounds are isomers?(1)8Acompound A and compound CBcompound B and compound CCcompound B and compound DDcompound C and compound D*N35131A0824*
(d) Which compound reacts with acidified potassium manganate(VII) to form a diol?(1)ABCD(Total for Question 14 4 marks)15 The structural formula of 5-chloro-2,2-dimethylhexane isHACH3CH3 C CH2 C CH3HCH3ClClCCH3CH2CH3CH2C CH3CH3(Total for Question 15 1 mark)TOTAL FOR SECTION A 20 MARKS*N35131A0924*9Turn over
SECTION BAnswer ALL the questions. Write your answers in the spaces provided.16 Magnesium chloride can be made by reacting solid magnesium carbonate, MgCO3, withdilute hydrochloric acid.(a) Write an equation for the reaction, including state symbols.(2)(b) Give TWO observations you would make when the reaction is taking place.(2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(c) In an experiment to make crystals of hydrated magnesium chloride, MgCl2.6H2O,magnesium carbonate was added to 25 cm3 of hydrochloric acid with concentration2.0 mol dm–3. The molar mass of magnesium carbonate is 84.3 g mol–1.(i) How many moles of acid are used in the reaction?(1)(ii) What mass of magnesium carbonate, in grams, reacts with this amount of acid?(1)(iii) Suggest why slightly more than this mass of magnesium carbonate is used inpractice.(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(iv) How would you separate the magnesium chloride solution from the reactionmixture in (iii)?(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10*N35131A01024*
(v) The magnesium chloride solution was left to crystallise. The crystals wereseparated and dried carefully. A sample of 3.75g of hydrated crystals,MgCl2.6H2O, which have molar mass 203.3 g mol–1, was obtained.Calculate the percentage yield of this reaction.(2)(vi) Give ONE reason why the yield of crystals is less than 100%, even when purecompounds are used in the preparation.(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*N35131A01124*11Turn over
(d) Lattice energies can be measured using the Born-Haber cycle, or calculated fromelectrostatic theory. Lattice energies of magnesium chloride and magnesium iodideare shown below.Lattice energy fromBorn-Haber cycle usingexperimental data/ kJ mol–1Lattice energy fromelectrostatic theoryMgCl2–2526–2326MgI2–2327–1944Salt/ kJ mol–1(i) What does this data indicate about the bonding in magnesium chloride?(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*(ii) Explain why there is a greater difference between the experimental(Born-Haber) and theoretical lattice energies for magnesium iodide, MgI2,compared with magnesium chloride.(2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12*N35131A01224*
(e) Blood plasma typically contains 20 parts per million (ppm) of magnesium, by mass.(i) Calculate the mass of magnesium, in grams, present in 100 g of plasma.(1)(ii) Magnesium chloride can be used as a supplement in the diet to treat patientswith low amounts of magnesium in the blood. Suggest ONE property whichmakes it more suitable for this purpose than magnesium carbonate.(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(Total for Question 16 16 marks)*N35131A01324*13Turn over
17 Sulfamic acid is a white solid used by plumbers as a limescale remover.(a) Sulfamic acid contains 14.42% by mass of nitrogen, 3.09% hydrogen and33.06% sulfur. The remainder is oxygen.(i) Calculate the empirical formula of sulfamic acid.(3)(ii) The molar mass of sulfamic acid is 97.1 g mol–1. Use this information to deducethe molecular formula of sulfamic acid.(1)(b) A solution of sulfamic acid contains hydrogen ions. The hydrogen ions react withmagnesium to produce hydrogen gas. In an experiment, a solution containing5.5 10–3 moles of sulfamic acid was reacted with excess magnesium. The volumeof hydrogen produced was 66 cm3, measured at room temperature and pressure.(i) Draw a labelled diagram of the apparatus you would use to carry out thisexperiment, showing how you would collect the hydrogen produced andmeasure its volume.(2)14*N35131A01424*
(ii) Calculate the number of moles of hydrogen, H2, produced in this reaction.[The molar volume of a gas is 24 dm3 mol–1 at room temperature and pressure](1)(iii) Show that the data confirms that each mole of sulfamic acid produces one moleof hydrogen ions in solution.(2)(c) Plumbers use sulfamic acid powder for descaling large items such as boilers.Sulfamic acid acts as a descaler because the hydrogen ions react with carbonate ionsin limescale.(i) Write an ionic equation for the reaction of hydrogen ions with carbonate ions.State symbols are not required.(1)(ii) Suggest ONE reason why sulfamic acid is considered less hazardous thanhydrochloric acid as a descaler.(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(Total for Question 17 11 marks)*N35131A01524*15Turn over
18 This question is about hexane, C6H14, and hex-1-ene, C6H12.(a) What test would you use to distinguish between hexane and hex-1-ene? Give theresults of the test for each substance.(2)Test: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Edexcel GCE Chemistry Advanced Subsidiary Unit 1: The Core Principles of Chemistry Candidates may use a calculator. Centre Number Candidate Number Write your name here Surname Other names Total Marks 6CH01/01 Thursday 14 January 2010 – Morning Paper Reference Time: 1 hour 30 minutes Turn over N35131A 2010
University of Cambridge International Examinations London GCE AS/A-Level / IGCSE / GCSE Edexcel International. 6 Examination Date in 2011 Cambridge IGCSE Oct/Nov X 9 Cambridge GCE / May/Jun 9 9 London GCE London GCSE May/Jun 9 X Chinese London IGCSE Jan X 9 Cambridge IGCSE / May/Jun 9 9 London IGCSE London GCE Jan 9 9 Cambridge GCE Oct/Nov X 9 Private Candidates School Candidates Exam Date. 7 .
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Chemistry Advanced Subsidiary Unit 1: The Core Principles of Chemistry Friday 9 January 2009 – Afternoon . Edexcel GCE N34410A 2009 Edexcel Limited. 7/7/7/7/2/3 *N34410A0128* Candidates may use a calculator. 2 *N34410A0228* SECTION A Answer ALL the questions in this se
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webpage on the Edexcel website. More past papers can be found by searching the Edexcel website under the term ‘past papers’. You will also find lots of tips on preparing for your exam in the student area of the Edexcel website. Edexcel’s Scheme of Assessment (specification 4HI1) This Edexcel International GCSE in History comprises two .
Chemistry ORU CH 210 Organic Chemistry I CHE 211 1,3 Chemistry OSU-OKC CH 210 Organic Chemistry I CHEM 2055 1,3,5 Chemistry OU CH 210 Organic Chemistry I CHEM 3064 1 Chemistry RCC CH 210 Organic Chemistry I CHEM 2115 1,3,5 Chemistry RSC CH 210 Organic Chemistry I CHEM 2103 1,3 Chemistry RSC CH 210 Organic Chemistry I CHEM 2112 1,3
Organization 67 SECTION 2: ORGANIZATIONAL BEHAVIOR IN GROUP LEVEL Chapter 6 Organizational Communication in Islamic Management 91 Chapter 7 Organizational Conflict Management in Islamic Management 111. SECTION 3: ORGANIZATIONAL BEHAVIOR IN ORGANIZATION LEVEL Chapter 8 Influence and Leader–Follower Relations in Hereafter-oriented Organizations 137 Chapter 9 Leadership Styles in Islamic .
