Chem S3 EOY PLMGS P1 2023 with ans

1 CANDIDATE NAME CLASS CLASS INDEX NUMBER CHEMISTRY Modified 6092/01 Paper 1 Multiple Choice 4 October 2023 Additional Materials: Multiple Choice Answer Sheet 45 minutes READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name and class index number on the separate Answer Sheet in the spaces provided. There are thirty 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 booklet. A copy of the Periodic Table is printed on page 2. The use of an approved scientific calculator is expected, where appropriate. This paper consists of 14 printed pages, including this cover page. Paya Lebar Methodist Girls’ School (Secondary) End of Year Examination 2023 Secondary 3 Express [Turn over

3 1 “Particles moving very slowly from an area of higher concentration to an area of lower concentration.” Which process is being described? A a liquid freezing B a solid melting C a substance diffusing through a liquid D a substance diffusing through a gas 2 Diagrams of the three states of matter for carbon dioxide are shown below. Which two diagrams show the states of matter before and after the sublimation of carbon dioxide? A 2 to 1 B 3 to 1 C 2 to 3 D 3 to 2 3 The table shows information about four different particles. What are the values of W, X, Y and Z? [Turn over

4 4 An atom of one isotope of bromine is represented by the symbol 𝐵𝑟.35 81 Which row is correct for an atom of a different isotope of bromine? number of neutrons number of protons nucleon number A 44 35 44 B 79 44 79 C 44 35 79 D 47 35 82 5 Two elements, P and Q are in the same period of the Periodic Table. P and Q react together to form an ionic compound. Part of the lattice of this compound is shown. Which statement is correct? A An ion of P has more electrons than an ion of Q. B P is to the left of Q in the Periodic Table. C Element P is non-metallic. D The formula of the compound is P4Q4. 6 Iron is a metal. Its structure consists of a giant lattice of positive ions in a ‘sea of electrons’. Which statements about solid iron are correct? 1 Iron conducts electricity because the electrons are free to move. 2 Iron conducts heat because the positive metal ions are free to move. 3 Iron has a high melting point due to the strong ioni