2022 GYSS Chem Prelims P1

2 Y Additional Materials: Multiple Choice Answer Sheet Periodic Table READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, centre number, index number, class and register number in the spaces above. There are forty questions on this paper. Answer all questions. For each question there are four possible answers, A, B, C and D. Read the instructions on the Answer Sheet 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 question paper consists of 16 printed pages, inclusive of this cover page / GUANGYANG SECONDARY SCHOOL PRELIMINARY EXAMINATION 2022 Secondary Four Express CANDIDATE NAME CENTRE NUMBER CLASS/ REG No. 6092/01 31 August 2022 1 hour CHEMISTRY Paper 1 Multiple Choice INDEX NUMBER ���

3 PAPER 1 (40 MARKS) This paper consists of 40 multiple-choice questions. For each question, there are four possible answers. Choose the best answer you consider correct and record your answer on the Answer Sheet provided. 1 Copper (II) nitrate is soluble in water. Copper (II) carbonate is insoluble in water. A mixture of solid copper (II) nitrate and copper(II) carbonate is added to a beaker of water. It is stirred until no more solid dissolves. How can separate samples of copper (II) nitrate and copper (II) carbonate be obtained from the resulting mixture? A B C D crystallisation followed by distillation evaporation followed by distillation evaporation followed by filtration filtration followed by crystallisation 2 A mixture of three liquids is separated by fractional distillation. Which statements are correct? 1 The mixture boils at constant temperature throughout the separation. 2 The temperature at which the mixture boils increases during the separation. 3 The liquid with the highest boiling point is collected first. 4 The liquid with the lowest boiling point is collected first. A B C D 1 and 3 1 and 4 2 and 3 2 and 4 3 It is possible to produce Ar2+ ions from argon atoms in a laboratory. Which statement is correct? A B C D Each argon atom gains two electrons and loses the electronic configuration of an inert gas. Each argon atom gains two electrons and obtains the electronic configuration of an inert gas. Each argon atom loses two electrons and loses the electronic configuration of an inert gas. Each argon atom loses two electrons and obtains the electronic configuration