NYGH 2016-S3MYE-IP Chem

Class Register Number Name NANYANG GIRLS’ HIGH SCHOOL Mid-Year Examination 2016 Secondary Three CHEMISTRY 1 hour 30 minutes 0800-0930 Wednesday 11 May 2016 Additional materials: Writing papers READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your name, register number and class in the spaces at the top of this page. Section A (MCQ) 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. Section B (Structured) Answer All questions in the spaces provided on the Question Paper. Section C (Short Answer) Answer All questions in the spaces provided on the Question Paper. Submit Multiple Choice Answer Sheet and Question Paper separately. The intended number of marks is given in the brackets [ ] at the end of each question or part question. A copy of the Periodic Table is printed on page 17. Examiner’s Use Section A (20 marks) Section B (30 marks) Section C (10 marks) Total (60 marks) Setters: LSC, CJS This document consists of 17 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over]

2016 Mid-Year Examination Secondary Three 2 Nanyang Girls’ High School Setters: LSC, CJS Chemistry Section A (20 marks) 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. 1 Different metals were added to dilute sulfuric acid. In which beaker will a reaction not take place? 2 Alex was stung by an insect with an alkaline sting. Which of the following substance is the most suitable for treating the insect sting? A vinegar B ethanol C tooth paste D cooking oil 3 Which of the following statements correctly describe a strong acid? I It has a high pH value. II It ionizes completely in water. III It has a high concentration of hydrogen ions. IV It exists as molecules in water. A I and II only B II and III only C I and IV only D III and IV only iron wire magnesium ribbon copper turning zinc powder A B C D

2016 Mid-Year Examination Secondary Three 3 Nanyang Girls’ High School Setters: LSC, CJS Chemistry [Turn Over] 4 Which two substances react to give a salt and water only? A iron and hydrochloric acid B potassium oxide and water C calcium carbonate and nitric acid D magnesium hydroxide and ethanoic acid 5 Which of the following gas when bubbled into water will give a pH greater than 7? A chlorine B hydrogen C ammonia D carbon monoxide 6 Which of the following solutions a