2023 VS Chem Prelims P1

Class Register Number Name 6092/01 CHEMISTRY 23/4P/6092/1 PAPER 1 Tuesday 12 September 2023 1 hour VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR Additional materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Write your name, class and index number on all the work you hand in. Do not use staples, paper clips, glue or correction fluid. There are forty questions on this paper. Answer all questions. For each question, there are four possible answers A, B, C and D. Choose the one that you consider correct and record your choice in soft pencil on the separate 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. A copy of Periodic Table is printed on page 15. This question paper consists of 15 printed pages, including the cover page. [Turn Over

2 © Victoria School 23/4P/6092/1 1 Some information on these gas particles are given below. gas helium neon argon relative atomic mass, Ar 4 20 40 average speed / m/s 1.36 x 103 0.70 x 103 0.43 x 103 What is the average speed of the particles of oxygen gas? A 0.39 x 103 m/s B 0.63 x 103 m/s C 1.08 x 103 m/s D 1.47 x 103 m/s 2 Which of the following substances can be condensed when it passes through a water-cooled condenser? melting point / C boiling point / C A B C D -150 -39 2 5 -120 12 15 79 3 The catalytic cracking of nonane (C9H20) produces the following mixture. compound C7H16 C4H8 C2H6 CH4 percentage composition by mass / % 28 47 16 9 Which method can be used to separate the constituents of the mixture? A chromatography B evaporation C fractional distillation D separating funnel

3 © Victoria School 23/4P/6092/1 4 The heating curve of an impure sample of substance X is shown below. What are the melting point and boiling point of pure substance X? melting point / C boiling point / C A B C D 45 47 48 49 129 128 127 130 5 A student needs to measure four different volumes of a solution accurately. The volumes are 10.0 cm3, 25.