2022 VS Chem Prelims P2

Class Register Number Name 6092/02 CHEMISTRY 22/4P/6092/2 PAPER 2 Tuesday 30 August 2022 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

2 © Victoria School 22/4P/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. CaCl2 C CO2 Cu(NO3)2 Na3PO4 SO2 ZnSO4 (a) Which substance is an acidic atmospheric pollutant from volcanic eruptions? …………………………………………...………………………………………………..[ 1] (b) Which substance is commonly used as an inert electrode? …………………………………………...………………………………………………..[ 1] (c) Which substance dissolves in water to form an aqueous solution that gives a n insoluble white precipitate on addition of excess aqueous sodium hydroxide? …………………………………………...………………………………………………..[ 1] (d) Which substance is likely to be a good catalyst? …………………………………………...………………………………………………..[ 1] (e) Which substance will decolourise when used as an electrolyte in an electrolytic cell with inert electrodes? …………………………………………...………………………………………………..[ 1] [Total: 5]

3 © Victoria School 22/4P/6092/2 A2 The nuclide notation of hydrogen and deuterium are shown. (a) Suggest a term to indicate the relationship between a hydrogen atom and a deuterium atom. …………………………………………...………………………………