2023 HYSS Chem Prelims P1

Name: Index Number: Class: HUA YI SECONDARY SCHOOL Preliminary Examination CHEMISTRY Paper 1 24 August 2023 1 hour Candidates answer on the Multiple Choice Answer Sheet Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your Name, Index Number and Class on all the work you have done. 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 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 17. For Examiner’s Use Paper 1 This document consists of 17 printed pages including the cover page. © HYSS 2023 No part of this document may be reproduced in any form or transmitted in any form or by any means without the prior permission of Hua Yi Secondary School. [Turn Over 4E 4E 6092/1 Setter: Mrs Magdalena Sii

2 2023 4E Pure Chemistry Preliminary P1 Hua Yi Secondary School 1 Which apparatus is the most suitable to measure 37.7 cm3 of a solution accurately? A beaker B burette C measuring cylinder D pipette 2 The diagrams show the chromatograms of an ink sample P using two different solvents. Which substance does ink P contain? A X only B X and Z only C Y and Z only D X, Y and Z 3 The properties of some substances are shown in the table. T R S U melting point/ ⁰C 3600 -101 4000 714 boiling point/ ⁰C 4200 -34 4830 1412 electrical conductivity yes no no yes soluble in water no no no yes Which row identifies the correct substance? magnesium chloride diamond graphite chlorine A T U R S B T S U R C U T R S D U S T R developed with water developed with alcohol P X Y Z P X Y solvent front starting line Z

3 2023 4E Pure Chemistry Preliminary P1 Hua Yi Secondary School 4 Which diagram shows the correct way to obtain dry carbon dioxide, CO2, from a mixture of damp ammonia and carbon dioxide gas? A B C D