From Atoms to Materials

13.5 Metals in a smartphone Warm up transistor 晶體管 soldering 焊接 Metals are very important materials in the modern world. Many objects around us are made of metals, or contain metal parts: Gold wire coating in circuit boards Copper in transistors* Aluminium a major material of outer case Tungsten in vibrating components Tin soldering* material in circuit boards Fig. 13.21 Objects made of metals Give some more examples of daily objects made of metals. Guess what properties of these metals make them suitable for these purposes. Share your ideas with your classmates. In a smartphone, many components may contain metals. 2 Water 13.5 Metals and alloys © 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