AJC_H2_CHEM_P1

AJC JC2 PRELIM 2014 9647/01/H2 [Turn over ANDERSON JUNIOR COLLEGE 2014 JC2 PRELIMINARY EXAMINATIONS CHEMISTRY 9647/01 Higher 2 22 September 2014 Paper 1 Multiple Choice 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. 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 Multiple Choice Answer Sheet. 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. This document consists of 19 printed pages. Multiple Choice Answer Sheet Write your name, PDG and NRIC / FIN number, including the reference letter. Shade the NRIC / FIN number. Exam Title: JC2 Prelim Exam Details: H2 Chemistry / Paper 1 Date: 22/09/2014

2 AJC JC2 PRELIM 2014 9647/01/H2 [Turn over Section A For each question there are four possible answers, A, B, C and D. Choose the one you consider to be correct.   1 Dilute sulfuric acid was added to aqueous barium hydroxide until the acid was present in excess. How will the total number of ions present in solution in the reacting mixture vary? A B C D     2 When iron reacts with aqueous iron(III) ions, iron(II) ions are formed as the only product. A final mixture, after the reaction has taken place, contains equal numbers of moles of Fe 2+(aq) and Fe3+(aq). Assuming the reaction has gone to completion, how many moles of Fe(s) and Fe3+(aq) were in the starting mixture? moles of Fe(s) moles of Fe 3+(aq) A 1 2 B 1 3 C 1 5 D 2 3       number of ions amount of acid added 0 number of ions amount of acid added 0 number of ions amount of acid added 0 number of ions amount of acid added 0

3 AJC JC2 PRELIM 2014 9647/01/H2 [Turn over energy energy energy energy   3 A sample of the element Americium (Am) was vaporised, ionised and passed through an electric field. It was observed that a beam of 241Am+ particles gave an angle of deflection of +2. Assuming an identical set of experimental conditions, by what angle would a beam of 32S– particles be deflected? A +15.1 B –15.1 C +30.1 D –30.1 4 Which diagram best shows the shapes and relative energies of the valence orbitals of carbon in a molecule of ethene? A 2s sp3 B sp3   2s   C sp2 2p D 2p sp2 241Am+ +2 + –

4 AJC JC2 PRELIM 2014 9647/01/H2 [Turn over 5 Which of the following diagrams correctly describes the behaviour of a fixed mass of an ideal