WDL 4NA Science Chemistry P3 Question Booklet 2023

1 5105 and 5107/03/Prelim/2023 NORMAL (ACADEMIC) NORMAL (ACADEMIC) NORMAL (ACADEMIC) Name: ........................................................................ ( ) Class: ................ WOODLANDS SECONDARY SCHOOL PRELIMINARY EXAMINATIONS 2023 Level: Secondary Four Normal (Academic) Marks: 20 Subject: Science (Chemistry) Day: Wednesday Paper: 5105/03 and 5107/03 Date: 2 August 2023 Duration: 1 hour 15 minutes (Papers 3 and 4) Time: 1145 – 1300 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided. 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 12. The use of an approved scientific calculator is expected, where appropriate. DO NOT TURN THE PAGE UNTIL YOU ARE TOLD TO DO SO. This document consists of 11 printed pages and 1 blank page.

2 5105 and 5107/03/Prelim/2023 NORMAL (ACADEMIC) NORMAL (ACADEMIC) NORMAL (ACADEMIC) 1 Two methods of collecting gas X are shown. X What can you infer about the properties of X? solubility of X in water density of X A high higher than air B high lower than air C low higher than air D low lower than air 2 The diagram shows a paper chromatogram. Which brand of drink is made by mixing dyes X and Y? A M B N C P D Q water X M N P Q X Y dye brand of drink

3 5105 and 5107/03/Prelim/2023 NORMAL (ACADEMIC) NORMAL (ACADEMIC) NORMAL (ACADEMIC) 3 Which diagram represents a mixture of hydrogen chloride gas, hydrogen gas and chlorine gas? A B C D 4 A gaseous substance was allowed to cool. The graph of its temperature against time is shown. Which letter denotes the boiling point of the substance?

4 5105 and 5107/03/Prelim/2023 NORMAL (ACADEMIC) NORMAL (ACADEMIC) NORMAL (ACADEMIC) 5 The table gives information about four atoms E, F, G and H. atom number of protons number of neutrons E 10 10 F 10 12 G 12 12 H 14 1