ACJC_H1_CHEM_P1_Qns___ans

ANGLO-CHINESE JUNIOR COLLEGE DEPARTMENT OF CHEMISTRY Preliminary Examination CHEMISTRY 8872/01 Higher 1 Paper 1 Multiple Choice 29 August 2016 50 minutes Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluids. Write your name, index number and tutorial class on the Answer Sheet in the spaces provided unless this has been done for you. There are thirty 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. The use of an approved scientific calculator is expected, where appropriate. This document consists of 14 printed pages. 8872/01/ Prelim/16 ANGLO-CHINESE JUNIOR COLLEGE © ACJC 2016 Department of Chemistry [Turn over

2 © ACJC 2016 8872/01/Prelim/2016 [Turn over Section A For each question there are four possible answ ers, A, B, C, and D. Choose the one you consider to be correct. 1 Which statement about one mole of a metal is always true? A It contains the same number of atoms as one mole of hydrogen atoms. B It contains the same number of particles as 1 12 mole of 12C. C It has the same mass as one mole of hydrogen atoms. D It is liberated by one mole of electrons. 2 The discharge of the nickel-cadmium rechargeable battery is based upon the following overall reaction. Cd + 2NiOOH + 4H2O Cd(OH)2 + 2Ni(OH)2.H2O What is the oxidation number of nickel at the beginning and at the end of the reaction? beginning end A +1.5 +2 B +2 +3 C +3 +2 D +3 +4 3 Elements J and Q have the following successive ionisation energies in kJ mol –1 1st 2nd 3rd 4th 5th 6th 7th J 587 1817 2745 11577 14842 18379 23326 Q 870 1790 2698 3610 5668 6820 13200 What is the likely formula of the compound that is formed when J reacts with Q? A JQ3 B J2Q3 C J3Q2 D J2Q

3 © ACJC 2016 8872/01/Prelim/2016