NYGH 2012-S3BT1-Chem

Class Register Number Name 南洋女子中学校 NANYANG GIRLS' HIGH SCHOOL BLOCK TEST 1 Secondary Three CHEMISTRY 1 hour Monday 02 April 2012 1115-1215 h 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 (Multiple Choice) Section A (15 MCQ) This section consists of 15 multiple choice questions. Choose the best answer and write its letter in the space provided on page 2 of the Question Paper. Section B (Structured) Answer all questions in the spaces provided on the Question Paper. Section C (Free-Response) Answer all questions in the spaces provided on the Question Paper. Submit Sections A, B and C together. INFORMATION FOR CANDIDATES 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 12. Topics to be tested: Acids and Bases Salt preparation Ionic equations Qualitative analysis Examiner’s Use Section A (15 marks) Section B (20 marks) Section C (10 marks) Total (45 marks) Setter: Z.J. This document consists of 12 printed pages. NANYANG GIRLS' HIGH SCHOOL [ Turn over]

2012 Block Test 1 Nanyang Girls’ High School Secondary Three Setter: Z.J. Chemistry 2 Section A (15 Marks) Answer the questions (1-15) by filling the answer in the table below. 1 6 11 2 7 12 3 8 13 4 9 14 5 10 15 Section B (20 marks) Answer all questions in this section in the spaces provided B1 Choose from the following list of substances and write the chemical name of the substance that best match the identities of substances L-Q. You may choose to use any substance only once, more than once, or not at all. ammonia carbon dioxide copper(II) nitrate iron(III) carbonate hydrogen nitrogen monoxide potassium carbonate sodium hydroxide zinc (a) Upon addition of aqueous L to aqueous M, a blue precipitate which is soluble in excess aqueous M was observed. [2] L: M: (b) An acidic oxide N was produced upon reaction of insoluble O and dilute hydrochloric acid. [2] N: O: (c) The ionic equation for the reaction of aqueous P with aqueous calcium chloride is: Ca2+(aq) + CO3 2-(aq) → CaCO3(s) [1] P:

2012 Block Test 1 Nanyang Girls’ High School Secondary Three Setter: Z.J. Chemistry [Turn Over] 3 B2 (a) The following reactions were carried out according to the following pathway: + +