2021 SASS 4E Chem MYE P1

1 SCI7015GD © SASS 2021 Mid–Year Examination 2021/4 Express/Chemistry/Paper 1 Candidate Name __________________________________ CHEMISTRY 6092/1 Paper 1 Tuesday 11 May 2021 1 hour READ THESE INSTRUCTIONS FIRST Do not open this question paper until you are told to do so. Write your name, index number and class in the spaces provided on this question paper and the Answer Sheet. Write in soft pencil. 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 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 question paper. A copy of the Periodic Table is printed on page 16. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 16 printed pages. Class Index Number [Turn over ST ANDREW’S SECONDARY SCHOOL MID-YEAR EXAMINATION 2021 SECONDARY 4 EXPRESS ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL

3 [Turn Over Mid–Year Examination 2021/4 Express/Chemistry/Paper 1 1 The diagram shows how the arrangement of particles changes during its change in state. What change in state is shown? A Boiling B Condensation C Evaporation D Sublimation 2 A paper chromatography experiment is carried out to separate and identify the mixture of amino acids produced from the hydrolysis of a protein. Which apparatus is needed? A chromatography paper, pencil, solvent B chromatography paper, locating agent, ruler, solvent C chromatography paper, locating agent, pencil. ruler, solvent D chromatography paper, locating agent, pencil, ruler, solvent, thermometer 3 A student investigated the diffusion of ammonia gas and hydrogen chloride gas. Two sets of apparatus were set up at room temperature and pressure. The damp blue litmus paper in apparatus 2 changed colour after 30 seconds.