RI 2023 Y5 Timed Practice QP

1 This document consists of 29 printed pages and 1 blank page. RAFFLES INSTITUTION 2023 YEAR 5 TERM 3 COMMON TEST Higher 2 CANDIDATE NAME CLASS INDEX NUMBER CHEMISTRY 9729 6 July 2023 2 hours 15 minutes Additional Materials: Multiple Choice Answer (OMR) Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write your name, 6-digit exam index number and civics tutorial group in the spaces provided on the OMR sheet and the cover sheets on pages 1 and 19. Shade your 6-digit exam index number on the OMR sheet. This paper consists of three sections, A, B and C. Section A (15 marks) consists of 15 multiple-choice questions. Answer this section first. The OMR sheet will be collected after the first 30 minutes. 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 OMR sheet. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in the question paper. Section B (30 marks) consists of 3 structured questions. Answer all questions in the spaces provided in the question paper. If additional space is required, you should use the pages at the end of the booklet for Section B (pages 17 – 18). The question number must be clearly shown. Section C (35 marks) consists of 2 free-response questions. Answer all questions in the spaces provided in the question paper. Answers to this section are to be written in the spaces provided in the question paper. If additional space is required, you should use the pages at the end of the booklet for Section C (pages 29 – 30). The question number must be clearly shown. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. The number of marks is given in brackets [ ] at the end of each question or part question. Question Marks B1 / 11 B2 / 10 B3 / 9

2 © Raffles Institution 2023 9729/J/23 [Turn Over Section A (15 marks) For each question, there are four possible answers, A, B, C, and D. Choose the one you consider to be correct. 1 Which statement about relative molecular mass is correct? A It is the ratio of the mass of a molecule to the mass of a carbon-12 atom. B It is the ratio of the mass of one mole of molecules to 1 12 the mass of a carbon-12 atom. C It is the ratio of the average mass of a mole