LVSS PRELIM 2023 4NA SCI CHEM P3

LOYANG VIEW SECONDARY SCHOOL Preliminary Examination 2023 Secondary Four Normal (Academic) CANDIDATE NAME : ……………………………………………………………….......... CLASS : …………………. INDEX NUMBER : ……………. SCIENCE (CHEMISTRY) 5105/03 Paper 3 Multiple Choice 3 Aug 2023 Papers 3 and 4: 1 hour 15 minutes Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are twenty 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. Answers to Paper 3 and Paper 4 must be handed in separately. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. You are advised to spend no more than 30 minutes on Paper 3. You may proceed to answer Paper 4 as soon as you have completed Paper 3. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 10. The use of an approved scientific calculator is expected, where appropriate. Setter: Mdm Elvina Abu Hasan This paper consists of 10 printed pages.

2 1 Students do an experiment that produces a soluble gas. Which apparatus allows them to measure the volume of the gas most accurately? A B C D 2 The table shows the boiling points of some of the elements present in air. element boiling point / oC argon −186 helium −269 neon −246 nitrogen −196 oxygen −183 Which elements are liquid at −200 oC? A argon, helium and neon B argon, nitrogen and oxygen C helium and neon only D nitrogen and oxygen only

3 3 Which changes occur when a liquid at 80 °C becomes a gas at 140 °C? distance between particles energy of particles A decreases decreases B decreases increases C increases decrease D increases increases 4 A chromatography test was carried out on the contents of a fizzy drink to find out which colourings it contains. The results of the chromatogram is shown below. Which two colourings are found in the fizzy drink? A 1 and 3 B 2 and 4 C 2 and 5 D 3 and 4 5 The structures of four atoms are given in the table below. atom number of protons number of electrons number of neutrons W 15 15 15 X 16 16 16 Y 15 15 17 Z 16 18 16 Which pair of atoms are isotopes? A W and X B W and Y C X and Y D X and Z fizzy drink 1 2 3 4 5 colouring

4 6 Magnesium metal reacts with chlorine gas to form magnesium chloride. Which substance could be magnesium