From Atoms to Materials

Extension Using a pair of tongs, remove the lid of crucible. Put the crucible on a heatproof mat. Wait for one to two minutes. 4 After the reaction product has cooled down, pour the product onto a white cardboard, and observe it. 5 Repeat steps 2 to 5 with iron oxide. 6 crucible heatproof mat For easier extraction of iron from iron oxide, another experiment ‘Extraction of iron from iron oxide using a match’ can also be done. More to discuss How can we know the extraction product from iron oxide is iron? Results Observation Copper oxide Iron oxide Colour of metal oxide Colour of product Any metal pieces found? (yes / no) Analysis and conclusion 1. Can the metals be extracted by heating their oxides with carbon, using a Bunsen flame? 2. I t is known that carbon dioxide is produced in the reactions involved. Based on this information, write a word equation for each successful extraction of metal. 69 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