From Atoms to Materials

13.6 plastic 塑膠 crude oil 原油 Another name for crude oil is petroleum*. Fig. 13.28 Crude oil viscous 黏稠 pungent 難聞的 seabed 海床 petroleum 石油 Fig. 13.27 Plastic products are all around us. Most plastics are made from crude oil . Crude oil is a black, viscous* liquid with a pungent* smell. It is found underground or under the seabed*. It is a very important natural resource. Let’s learn some properties of crude oil now. Metals and alloys are materials commonly used today. Apart from them, another type of commonly used materials is plastics . Many objects around us are made of plastics. Crude oil and plastics Suppose you are a product designer. You are going to design some utensils (bowls, plates, cups and spoons) for children’s use. When choosing materials for making these utensils, what properties do you consider? Will you use metals, plastics, or other materials? Why? Share your ideas with your classmates. Safety? Mass? Durability? Resistance to heat? Warm up 13.6 What materials will you choose? © 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