From Atoms to Materials

13.5A Comparing the properties of some metals Experiment metal strips of the same dimensions aluminium strip 1 iron strip 1 copper strip 1 metal rods of the same dimensions (with a pin fixed on its tip by wax) aluminium rod 1 iron rod 1 copper rod 1 dry cells 2 battery holder 1 Materials and ap p a r a t u s connecting wires (with crocodile clips) 4 light bulb 1 hammer 1 Bunsen burner 1 tripod 1 heatproof mat 1 gas lighter 1 ammeter 1 chopping board 1 Set up the circuit as shown. 1 Connect the metal strips to the circuit one by one. Record the ammeter reading for each metal strip. 2 H ow are the uses of metals related to their properties? Although metals have common properties, the properties of different metals can vary. These variations make each metal suitable for some particular uses. We shall get a clearer idea about this from the following experiment. A Metals are so widely used because of their particular properties, which distinguish them from glass, plastics, wood and other non-metallic materials. After learning some physical properties of metals in section 13.2, we shall now discuss the variations in these physical properties. 2 1 3 4 5 0 1 6 A metal strip ammeter light bulb Video Comparing the properties of some metals Steps A. Electrical conductivity 60 © 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