NYGH 2014-S3MYE-Chem P1

Class Register Number Name NANYANG GIRLS’ HIGH SCHOOL Mid-Year Examination 2014 Secondary Three CHEMISTRY 1 hour 30 minutes Section A Multiple Choice Tuesday 6 May 2014 1145- 1315 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 twenty 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 8. Setter: NHK This document consists of 8 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2014 Mid-Year Examination Secondary Three 2 Nanyang Girls’ High School Setter: NHK Chemistry/MCQ 1 Which of the following diagram represents the change in the arrangement of particles during the condensation process? A B C D 2 Which apparatus is most suitable to obtain water from a mixture of sand and water? A B C D 3 The diagram below shows the apparatus used to separate hexane (boiling point. 70oC) and heptane (boiling point, 98oC). sand and water sand and water sand and water sand and water T

2014 Mid-Year Examination Secondary Three 3 Nanyang Girls’ High School Setter: NHK Chemistry / MCQ [Turn over Which graph would be obtained if the temperature at point T was plotted against the total volume of distillate collected? A B C D 4 Which sub-atomic particle do atoms of 27 13Al and 28 14Si have the same number? A electrons B protons C neutrons D nucleons 5 The elements X and Y form the compound with a chemical formula of X2Y3. What is the correct electron arrangement of the atoms of X and Y? atom of X atom of Y A 2, 8, 2 2, 8, 3 B 2, 8, 6 2, 8, 3 C 2, 8, 3 2, 8, 6 D 2, 8, 2 2, 8, 6 6 Which of the following molecules contains six shared electrons? A CH4 B CO2 C H2S D NCl3 7 Which oxide has a simple molecular structure? A MgO B Al2O3 C SiO2 D P2O5 temperature/oC 100 90 80 70 total volume of distillate temperature/oC 100 90 80 70 total volume of distillate temperature/oC 100 90 80 70 total volume of distillate temperature/oC 100 90 80 70 total volume of distillate

2014 Mid-Year Examination Secondary Three 4 Nanyang Girls’ High School S