From Atoms to Materials

Using forceps, put a magnesium granule into the suction flask. Stopper the flask immediately, and start the stopwatch. Wait until 30 cm 3 of gas is produced, and stop the stopwatch. Record the time taken in the following table. Repeat the experiment using a calcium granule. 4 5 6 Experiment skill Make sure that there is no gas leakage at each connection. Caution DO NOT touch the calcium granule with your bare hands. Use forceps to handle it. Extension rubber tubing suction flask syringe magnesium granule Results Metal granule Time taken to produce 30 cm 3 of gas (s) Magnesium granule Calcium granule Analysis 1. Which element reacts with dilute hydrochloric acid at a higher rate? 39 13 From Atoms to Materials © United Prime Educational Publishing (HK) Limited 2024 All rights reserved; no part of this publication may be reproduced, photocopied, recorded or otherwise, without the prior written permission of the Publisher. Sample