From Atoms to Materials

gold gold atom graphite 石墨 Fig. 13.7 Some common elements (atoms are not drawn to scale) How are atoms and elements related? We have learnt about atoms and elements. Different elements consist of different kinds of atoms. Some examples are shown below. B oxygen oxygen atoms carbon (in the form of graphite*) carbon atom helium atom helium Some elements exist as molecules. For example, each oxygen molecule consists of two oxygen atoms (atoms of the same kind). Can you think of other examples of elements that exist as molecules? 14 © 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