From Atoms to Materials

Snapshot molten 熔融的 Checkpoint 13.5A By heating iron oxide with carbon to a high temperature, we get iron. 1. (a) O nly a few metals, e.g. gold and platinum, exist as (i) in their ores. Most metals exist as (ii) in their ores. (b) Methods of metal extraction can be classified into two types: (i) methods and (ii) methods. (c) Some metals, such as copper and lead, can be extracted from their oxides by heating with . 2. Write a word equation for the reaction shown below. Methods of metal extraction There are many methods of metal extraction. You may search for more information about these methods. Metal Extraction method Ease of extraction Sodium breaking down the molten* ores using electricity most difficult least difficult Magnesium Aluminium Zinc heating the ores with carbon Iron Lead Copper Mercury heating the ores alone Silver Platinum physical methods Gold 71 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