YIJC 2025 Prelim P1 (for exchange)_H2 Chem

©YIJC 9729/01/JC2/PE/2025 [Turn over YISHUN INNOVA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION Higher 2 CANDIDATE NAME CG INDEX NO CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Data Booklet 9729/01 18 September 2025 1 hour 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 unless this has been done for you. 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. The use of an approved scientific calculator is expected, where appropriate. This document consists of 17 printed pages and 3 blank pages.

©YIJC 9729/01/JC2/PE/2025 2 1 Three different charged particles are fired with equal velocity into an electric field. The diagram below shows how each particle is deflected. Which row gives the correct identities of D, E and F? D E F A 14N+ 28Si2– 14C2– B 14N– 28Si2+ 14C2+ C 16O2+ 16O2– 28Si– D 16O2– 16O2+ 28Si+ 2 Use of the Data Booklet is relevant to this question. The graph shows the first thirteen successive ionisation energies for element G. What can be deduced about element G from the graph? A It is aluminium. B It is a d-block element. C It is in Period 3 of the Periodic Table. D The outermost electronic configuration is ns2. ionisation energy number of electrons removed + – D E F

3 ©YIJC 9729/01/JC2/PE/2025 [Turn over 3 Which statement describes a phenomenon caused by intermolecular hydrogen bonding? A The boiling point of an alcohol increases with increasing carbon chain length. B Hydrochloric acid forms H3O+ when dissolved in water. C CH3CHO has a higher boiling point than CH3CH2CH3. D Ice has a lower density than water at 0 °C. 4 In certain microwave ovens, the wave energy produced is absorbed by polar molecules. Which molecules would absorb microwave energy? 1 CH3CH2OH 2 AlCl3 3 CO2 4 CH3F A 1 and 2 only B 1 and 4 only C 2 and 3 only D 3 and 4 only 5 Element J is in Period 3 of the Periodic Table. The four statements below describe the properties of element J or its compounds. Three statements are correct descriptions. One of the statements is not correct because it does not fit with the other three. Which statement is not correct? A Element J is a solid at room temperature which conducts electricity. B The oxide of element J dissolves in wa