2023 VS 6092 P2 Chemistry Prelim

Class Register Number Name 6092/02 CHEMISTRY 23/4P/6092/2 PAPER 2 Tuesday 29 August 2023 1 hour 45 minutes 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 READ THESE INSTRUCTIONS FIRST Write your name, class and index number on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions in the spaces provided. Section B Answer all three questions. The last question is in the form either/or. Answer all questions in the spaces provided. The number of marks is given in brackets [ ] at the end of each question or part question. The use of an approved scientific calculator is expected, where appropriate. A copy of the Periodic Table is printed on page 22. This question paper consists of 22 printed pages, including the cover page. [Turn Over Section A / 50 Section B / 30 Total / 80 Deductions Presentation Significant Figures Units 477

2 © Victoria School 23/4P/6092/2 Section A Answer all the questions in this section in the spaces provided. The total mark for this section is 50. A1 Select substances from the list to answer the following questions. You may use each substance once, more than once or not at all. CuO K CO2 Ca(OH)2 SO3 Ni Cl2 SO2 (a) Which substance is a product of respiration? ………………………………………………...………………………………………………..[1] (b) Which substance gives a lilac flame when added to water? ………………………………………………...………………………………………………..[1] (c) Which substance is a catalyst in the hydrogenation of alkenes? ………………………………………………...………………………………………………..[1] (d) Which substance can produce effervescence when reacted with ammonium chloride? ………………………………………………...………………………………………………..[1] (e) Which two substances when added together will form only one compound? ………………………………………………...………………………………………………..[1] (f) Which substance is emitted by volcanoes and lead to global warming and acid rain? ………………………………………………...………………………………………………..[1] [Total: 6] 478

3 © Victoria School 23/4P/6092/2 A2 Fig. 2.1 shows the structures of compound S and compound T. Fig. 2.1 (a) Compound S is a weak acid while compound T is a strong acid. (i) Explai