NYGH 2012-S3EOY-Chem P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2012 Secondary Three CHEMISTRY 45 minutes Paper 1 Multiple Choice 0800 to 0845 Thursday 11 October 2012 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, highlighters, 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 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 periodic table can be found on page 12. Setter: HSC This document consists of 12 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2012 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setter: HSC Chemistry / I 1 The diagram shows the arrangement of particles in three different states of substance X. state 1 state 2 state 3 Which statement best describes the physical states of substance X? A State 1 changes to state 2 by diffusion. B Particles in state 1 vibrate about fixed positions. C State 2 changes directly to state 3 by sublimation. D Substance in state 1 has a fixed volume. 2 The diagram shows the chromatogram obtained by analysis of a single dye. Three measurements are shown. What is the distance travelled by the dye? A y B z C x + y D y + z

2012 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setter: HSC Chemistry / I [Turn over 3 The table shows some information about three substances. Substance Melting point / oC Boiling point / oC Solubility in water P 6.5 178 Soluble Q − 14 85 Soluble R 125 350 Insoluble The following operations could be carried out to separate a mixture of P, Q and R. 1. filtration; 2. fractional distillation; 3. evaporation; 4. add water. In which order should the operations be carried out? A 4, 1, 2 (omit stage 3) B 2, 4, 3 (omit stage 1) C 2, 4, 1 (omit stage 3) D 4, 1, 2, 3 4 A balloon filled with gas X is placed inside a beaker. The beaker is filled with gas Y. The balloon shrinks in size after a few hours. Which pair of gases would give the observation as shown in the diagram? gas X gas Y A air nitrogen B argon carbon dioxide C oxygen nitrogen D ammonia methane 5 The bonding electrons of a compound formed between Y and fluorine is shown below: What is the formula of the compound formed betwe