CCKSS 4E Physics (EOC) Prelim Practical 2022 Paper 3 Practical

Preliminary Examination 2022 Secondary Four Express Physics Paper 3 (6091/3) Date of Examination: 5 August 2022 Duration: 1 h 50 min Chua Chu Kang Secondary School Chua Chu Kang Secondary School Chua Chu Kang Secondary Schoo l Chua Chu Kang Secondary School Chua Chu Kang Secondary School Chua Chu Kang Secondary Schoo l Chua Chu Kang Secondary School Chua Chu Kang Secondary School Chua Chu Kang Secondary Schoo l Chua Chu Kang Secondary School Chua Chu Kang Secondary School Chua Chu Kang Secondary Schoo l Chua Chu Kang Secondary School Chua Chu Kang Secondary School Chua Chu Kang Secondary Schoo l Name: ______________________( ) Class: ____________ READ THESE INSTRUCTIONS FIRST Write your name, index number and class in the spaces provided and on any separate answer paper used. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions. Write your answers in the spaces provided on the question paper. Graph paper is provided in this question paper. Additional sheets of graph paper should only be used if it is necessary to do so. You will be allowed to work with the apparatus for a maximum of 55 minutes for each section. You are expected to record all your observations as soon as they are made. An account of the method of carrying out the experiment is not required. The use of an approved scientific calculator is expected, where appropriate. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Question Marks 1 2 Set by: Mr Neal Cooke 3 Vetted by: Ms Audrey Tan, Mdm Fiona Tay & Mdm Hartati TOTAL This Paper consists of 10 printed pages, including the cover page. 8 20 40 12

2 © CCKSS / SC DEPT 18 6091/Prelim 18/CCKSS [Turn over Section A 1 In this experiment, you will determine the specific latent heat of fusion of ice. You are provided with: • a supply of ice, • a styrofoam cup, • a supply of water at room temperature, • a measuring cylinder, • a plastic spoon, • a thermometer, • a stirrer, • some paper towels, • a retort stand with clamp and boss. (a) (i) Measure 80 cm3 of water from the supply, using the measuring cylinder. This water has a mass mw = 80 g. Pour the water into the styrofoam cup. Measure and record the temperature 1 of the water. 1 = …………………………………………. [1] (ii) Take a spoonful of ice, pour off the excess water and dry the ice with a paper towel. Place the ice into the cup. Stir the mixture and note the temperature when all the ice has melted. Continue adding spoonfuls of dried ice and keep stirring until the temperature of the water after the ice has melted completely is below 15 °C. Re