NYGH 2022-S3EOY-IP Chem P1

Class Register Number Name End-of-Year Examination 2022 Secondary 3 IP CHEMISTRY Paper 1 Multiple Choice 45 minutes Wednesday 5 October 0845 – 0930 Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue, correction fluid or tape. Write your name, register number and class in the spaces at the top of this page and on the 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 11. The use of approved scientific calculators is expected, where appropriate. This document consists of 11 printed pages and 1 blank page. Setter(s): OWJ/CHG NANYANG GIRLS' HIGH SCHOOL [Turn over

2 Setters: OWJ/CHG Chemistry Paper 1 1 The diagrams below show how particles in a substance are arranged in three different states. Which statement is correct? A State 1 can be changed to state 2 by melting. B State 3 can be changed to state 2 by sublimation. C Particles in state 2 are sliding over each other. D Substance in state 3 can be compressed. 2 A solid sample of ammonium carbonate was heated in a test tube to form ammonia , carbon dioxide and water vapour. (NH4)2CO3  2NH3 + CO2 + H2O A moist blue litmus paper was placed at the mouth of the test tube. What colour changes will the piece of moist blue litmus paper undergo? A Moist blue litmus paper remains blue. B Moist blue litmus paper turns red. C Moist blue litmus paper turns red and is then bleached. D Moist blue litmus paper turns red and then turns blue. 3 Which row correctly shows the effect of impurities on melting and boiling points? effect on melting point effect on boiling point A decrease decrease B decrease increase C increase decrease D increase increase state 1 state 2 state 3

3 Setters: OWJ/CHG Chemistry Paper 1 [Turn Over 4 Hydrochloric acid was reacted with calcium carbonate to produce a gas that was passed through a drying agent before being collected. Which row shows an appropriate drying agent to use and an appropriate method of collection? drying agent collection method A concentrated sulfuric acid downward delivery B concentrated sulfuric acid upward delivery C calcium oxide downward delivery D calcium oxide upward delivery 5 Ammonium chloride, copper(II) chloride, and silver chloride are mixed together in a mixture. Which techniques sh