2023_HYSS_Prelim_ScChem_4NA_P3

1 4N Science (Chemistry) P3 Preliminary Examination Hua Yi Secondary School Name: Index Number: Class: HUA YI SECONDARY SCHOOL Paper 3 & 4: 1 hour 15 minutes 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 the Answer Sheet in the spaces provided. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. There are twenty 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. This document consists of 8 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 4NA 4NA For Examiner’s Use Paper 3 SCIENCE (CHEMISTRY) 5105/03 Paper 3 Multiple Choice 2 August 2023 Preliminary Examination 5107/03

2 4N Science (Chemistry) P3 Preliminary Examination Hua Yi Secondary School 1 The boiling point of liquid X is lower than that of water. A student places a mercury thermometer in boiling liquid X. The diagram represents part of the stem of this thermometer without numbers. What is the boiling point of liquid X? A 75.5 o C B 84.5 o C C 104.5 o C D 105.5 o C 2 A student is given a mixture of three substances P, Q and R. The table shows some of the properties of P, Q and R. substance state solubility in water solubility in ethanol P solid yes no Q liquid no yes R solid no no Which method describes how a pure sample of substance Q can be separated from the original mixture? A add ethanol, filter, distil the filtrate B add ethanol, filter, add water to residue, filter C add water, filter, dry the residue D add water, filter, add ethanol to residue, filter 3 Which of the following occurs when water vapour condenses? space between particles energy of particles A decreases increases B decreases decreases C increases decreases D increases increases mercury

3 4N Science (Chemistry) P3 Preliminary Examination Hua Yi Secondary School 4 Which diagram sho