From Atoms to Materials

contains aluminium oxide bauxite* malachite* contains copper carbonate contains iron sulphide pyrite* haematite* rock salt* contains sodium chloride cerargyrite* contains silver chloride haematite 赤鐵礦 pyrite 黃鐵礦 bauxite 鋁土礦 malachite 孔雀石 rock salt 岩鹽 cerargyrite 角銀礦 Fig. 13.22 Some metal ores in which the metals exist in the form of compounds (The metals obtainable from these ores are shown in the circles.) How do we obtain metals? Metals ores in the Earth’s crust The metals we use are mainly obtained from rocks in the Earth’s crust. Such rocks are called metal ores*. Most metals exist as compounds in their ores. B contains iron oxide iron iron copper aluminium sodium silver 65 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. Sam le