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Matter and materials

Chemistry

After this lesson, you should be able to:

  • Follow guidelines to draw Lewis and Couper diagrams of simple covalent molecules
  • Write the names and formulae of covalent compounds
  • Distinguish between non-polar and polar covalent bonds
  • Describe, using Lewis diagrams, the formation of ions and ionic bonds and represent cations and anions
  • Predict the ions formed by atoms of metals and non-metals using information from the PT
  • Name ionic compounds
  • Describe the structure of an ionic crystal
  • Describe the simple model of metallic bonding in terms of positive ions in a sea of electrons

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