From Atoms to Materials

+ + Chapter Exercise True-or-false Circle T for a true statement and F for a false one. 1. Elements can only be metals or non-metals. T / F 2. All atoms of the same element have the same number of neutrons. T / F 3. A cation carries a positive charge. T / F 4. In the modern Periodic Table, elements are arranged in order of increasing atomic mass. T / F 5. A mixture is formed by two or more elements chemically joined together. T / F 6. Polyvinyl chloride is a hydrocarbon. T / F 7. Some fractions of crude oil are used to produce fuels. T / F Fill-in-the-blank Write down the missing words on the lines. 8. Label the following parts of the atom. Name of particle: (c) Charge: (d) (positive / negative / neutral) Name of particle: (e) Charge: (f) (positive / negative / neutral) Particles in this area: (a) Charge: (b) (positive / negative / neutral) 9. Name two metals in the following alloys. (a) Bronze (b) Solder (c) Carat gold (d) Brass 112 Chapter Exercise © 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