NYGH 2017-S3EOY-IP Chem P1

Class Register Number Name NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2017 Secondary Three Chemistry Paper 1 Multiple Choice 45 minutes Wednesday 4 October 2017 0845-0930 Additional materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and register number on the Multiple Choice Answer Sheet provided. There are thirty questions in 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. INFORMATION FOR CANDIDATES 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 approved scientific calculators is allowed. A copy of the Periodic Table is found on page 11. Setters: OWJ This document consists of 10 printed pages and 2 blank page. NANYANG GIRLS’ HIGH SCHOOL [Turn over]

2017 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setters: OWJ Chemistry [Turn Over] 1 Which of the following accurately describes the arrangement of particles in a dilute aqueous solution of ethanol? water particles ethanol particles A close together close together B close together far apart C far apart close together D far apart far apart 2 The diagram below shows an experimental set-up involving gases X and Y. After some time the water level at Z becomes lower. Which of the following could be the identities of X and Y? X Y A carbon monoxide oxygen B fluorine argon C nitrogen nitrogen monoxide D nitrogen dioxide carbon dioxide 3 Which of the following is a set of two mixtures? A air, carbon dioxide B bronze, hydrogen C D hydrogen chloride, seawater steel, sodium chloride solution 4 Which of the following is true for covalent and ionic substances? covalent ionic A compound only compound only B compound only element or compound C element or compound compound only D element or compound element or compound porous pot inverted beaker water initial water level Z Y X

2017 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setters: OWJ Chemistry [Turn Over] 5 Which of the following properties provide the basis for separation using fractional distillation? A boiling points B colours C densities D solubilities in the same solvent 6 The properties of three unknown substances A, B and C are shown below. substance solubility in water melting point/°C boiling point/°C A insoluble 5 93 B insoluble 82 438 C soluble –13 67 When substances A, B, C and water are mixed together at room temperature and pressure, which of the following sequence of steps should be conducted to obtain sub