From Atoms to Materials

13.4A Physical changes or chemical changes? Explore l r A B C D E F A piggy bank is broken. Water vapour condenses. Iron pipes rust. Water boils. Charcoal burns. Sugar dissolves in coffee. 1. Are these processes physical changes or chemical changes? Write the letters in the correct box. Physical changes Chemical changes 2. F or the chemical changes in Q1, name the new substance(s) formed. Process New substance(s) formed 51 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