Bonding: The Structure of Matter

• Element: substance that cannot be split into anything simpler, in a chemical reaction. Each element has a unique proton number.
• Mixture: two or more elements mixed together but not chemically combined
• Compound: substance in which two or more different elements are chemically combined
• Metals:

  • Strong
  • Good conductors of heat and electicity
  • High m.p and b.p
  • High Density
  • Form Basic oxides
  • Forms cations in reactions
  • Malleable and ductile
  • Sonorous
  • Some are magnetic
• Non Metals:

  • Brittle
  • Poor conductors of heat and electricity
  • Low m.p and b.p
  • Low density
  • Forms acidic oxides
  • Forms anions in a reaction
• Alloy: Mixture of two or more metals or mixture of one or more metal with a non-metal, to improve its properties