2017 RVHS H2 Chemistry P1

River Valley High School 9729/01 [Turn over 2017 Preliminary Examinations II RIVER VALLEY HIGH SCHOOL YEAR 6 PRELIMINARY EXAMINATION II CANDIDATE NAME CLASS 6 CENTRE NUMBER S 3 0 4 4 INDEX NUMBER 0 0 H2 CHEMISTRY 9729/01 Paper 1 Multiple Choice 21 Sep 2017 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the Optical Answer Sheet in the spaces provided. There are thirty questions on 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 Optical Answer Sheet. Read the instructions on the Answer Sheet very carefully. 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 an approved scientific calculator is expected, where appropriate. _____________________________________________________________________________ This document consists of 16 printed pages and 0 blank pages.

2 River Valley High School 9729/01 2017 Preliminary Examinations II For each question there are four possible answers, A, B, C and D. Choose the one you consider to be correct. 1 Use of the Data Booklet is relevant to this question. At room temperature and pressure, a sample of 2 dm3 of polluted air wa s passed through limewater so that all the carbon dioxide present wa s precipitated as calcium carbonate. The mass of calcium carbonate formed was 0.05 g. What is the percentage, by volume, of carbon dioxide in the air sample? A 0.30% B 0.57% C 0.60% D 1.20% 2 When Tl+(aq) reacts with VO3–(aq), Tl3+(aq) and V2+(aq) are formed. Assuming the reaction goes to completion, how many moles of T l+(aq) and VO3–(aq) would result in a mixture containing equal number of moles of VO 3–(aq) and V 2+(aq) once the reaction had taken place? Moles of Tl+(aq) Moles of VO3–(aq) A 1 2 B 1 3 C 2 3 D 3 4 3 Which of the following statements about the carbonate ion, CO32, are correct? 1 The carbon atom is sp2-hybridised. 2 The carbon in CO32 has an octet electronic configuration. 3 It has the same bond angle as the nitrate ion, NO3. A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3 only

3 River Valley High School 9729/01 [Turn over 2017 Preliminary Examinations II 4 The diagram represents the melting points of four consecutive elements in the third period of the Periodic Table. . The sketches below represent another two properties, m and n, of the elements. What are the properties m and n? Property m Property n A third ionisation energy electronegativity B number