NYGH 2019-S3EOY-IP Chem P1

Class Register Number Name NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2019 Secondary Three Chemistry Paper 1 Multiple Choice 45 minutes Monday 14 October 2019 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 14. Setter: FKD This document consists of 14 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over]

2019 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setter: FKD Chemistry / Paper 1 [Turn Over] 1 The graph shows the change in temperature with time when ice is heated. At which region can you find a mixture of ice and water? A P to Q B Q to R C R to S D S to T 2 Four balloons are inflated with equal volumes of different gases and left in a room. Which balloon is most likely to deflate the fastest? temperature / °C P Q U time / s R S T 100 – 0 – X HCl SO2 F2 Ne A B C D

2019 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setter: FKD Chemistry / Paper 1 [Turn Over] 3 The graph gives the melting points (m.p.) of mixtures of lead and tin. What would be the melting range of a mixture of lead and tin? A Above the melting point of tin. B Below the melting point of lead. C Between the melting point of tin and lead. D Below the melting point of both tin and lead. 4 A student set up the apparatus as shown below. What is the identity of the gas that was collected? A ammonia B carbon dioxide C chlorine D oxygen melting point / oC % of tin in the mixture melting point / oC gas collected in inverted gas jar calcium oxide (drying agent) reaction mixture heat m.p. of pure tin m.p. of pure lead

2019 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School Setter: FKD Chemistry / Paper 1 [Turn Over] 5 Some physical properties of two substances X and Y are shown below. substance melting point (°C) boiling point (°C) solubility in water X −96.7 39.6 insoluble Y −114.5 78.5 soluble