Sec 1 2024 Meridian Secondary School Science EOY

1 MSS 1G3 End-of-Year Examination 2024 Lower Secondary Science [Turn over[Turn over Name: Class: Sec _____ Index No.: _______MERIDIAN SECONDARY SCHOOLEND-OF-YEAR EXAMINATION 2024 LOWER SECONDARY SCIENCE SECONDARY 1 G3 9 October 2024BOOKLET A1 hour 30 minutes(for Booklets A and B)Additional Material:OTASREAD THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the OTAS. Section A: Multiple Choice Questions [30 marks]There are thirtyquestions in this booklet. Answer allquestions. For each question there are four possible answers A,B,Cand D.Choose the one you consider correct and record your choice in soft pencil on the separate OTAS. Read the instructions on the OTAS very carefully.Each correct answer will score one mark.Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate.A copy of the Periodic Table is printed on page 13 of Booklet A.At the end of the exam, hand in Booklet A, Booklet B and OTAS separately.For Examiner’s UseSection AThis question paper consists of 13printed pages. www.KiasuExamPaper.com 160

2 MSS 1G3 End-of-Year Examination 2024 Lower Secondary Science Section AAnswer all questions in the OTAS.1A student needs to use the Bunsen burner to heat a beaker of water. The steps for using the Bunsen burner are listed below but not in the correct order.I. Open the air-hole.II. Close the air-hole.III. Turn on the gas tap.IV. Light up the Bunsen burner.What is the correct order of the steps?AI, III, II, IVBII, III, IV, ICIII, I, IV, IIDIII, II, IV, I2A liquid chemical reacts violently with metals. When it comes into contact with bare skin, it causes severe burning sensation and damage to the skin.What hazard symbol should be used to label this chemical?A BCD www.KiasuExamPaper.com 161

3 MSS 1G3 End-of-Year Examination 2024 Lower Secondary Science [Turn over[Turn over 3In an experiment, Min Dee and Nabil took multiple measurements of the mass of an object. Their results are shown below.Min Dee’s measurements:mass / g 10 10.2 10.5 9.7Nabil’s measurements:mass / g 9.1 9.2 9.2 9.3Given that the actual mass of the object is 10.0 g, which statement is correct about the measurements obtained by Min Dee and Nabil?ANabil’s measurements are more accurate because they are closer to one another.BMin Dee’s measurements are more precise because they are closer to the actual mass.CNabil’s measurements are more precise because they are closer to one another.DMin Dee’smeasurements are more accurate because they are closer to one another.4Electrical wires are commonly made of copper.Which properties of copper make it a suitable material?Alow electrical conductivity, easily malleableBhigh electrical conductivity, easily malleableClow e