CHIJ St Nicholas Secondary 3 EOY MCQ Paper & Answers

This document consists of 13 printed pages and 1 blank page [Turn over Name: _______________________________ ( ) Class:___________ YEAR THREE INTEGRATED PROGRAMME END-OF-YEAR ASSESSMENT Chemistry Paper 1 30 September 2022 45 mins _____________________________________________________________________ READ THESE INSTRUCTIONS FIRST Write your name, register number and class on the Answer Sheet using a soft pencil. There are 30 questions in 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. Amendments may be done using a soft eraser. 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. For Examiner’s Use Total (30)

2

3 Topics Tested: Atomic Structure, Compounds, Elements and Mixtures, Bonding and Structure, Kinetic Particle Theory, Redox, Periodic Table, Mole Concept, Acids and Bases, Preparation of Salts, Qualitative Analysis. 1 Which statement is true? A Ne has more electrons than F-. B F- has more electrons than Na+. C Cu2+ has more electrons than Cu+. D O2- has more electrons than O. 2 The rate of diffusion of gas P (Mr = 32) and gas Q (Mr = 64) was compared at 30 °C and 60 °C. Which would have the slowest rate of diffusion? A gas P at 30 °C B gas P at 60 °C C gas Q at 30 °C D gas Q at 60 °C 3 In which species are the numbers of electrons and neutrons equal? A Beସ ଽ B Fଽ ଵଽ C Naଵଵ ଶଷ + D O଼ ଵ଼2-

4 4 The isotope cobalt-60 (Coଶ଻ ଺଴ ) is used to destroy cancer cells in the human body. Which statements about an atom of cobalt-60 is/are correct? 1 It contains 33 neutrons. 2 Its nucleus has a relative charge of 27+. 3 It has different number of neutrons from the other isotopes of cobalt. A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3 5 Which of the following pairs consists of two pure substances? A diamond and aqueous iodine B hydrogen and bronze C hydrogen chloride and water D lithium and air 6 Which of the following best describes the arrangement of particles present in dilute aqueous ammonia? NH3 molecules OH- ions A Not present Close together B Not present Far apart C Close together Close together D Far apart Far apart

5 7 Study the molecule below: In which group of the Periodic Table are elements W, X, Y and Z likely to be found? W X Y Z A Group III Group V Group VI Group I B Group