Chemistry: Metals + Reactions

• Metals / non-metals + oxygen

  Compounds called oxides
• Metal oxides

  Bases - can neutralise an acid, producing a salt + water
• Some metal oxides


  Dissolve in water to make alkalis (pH>7)
• Non-metal oxides


  Usually dissolve in water to make acidic solutions (pH<7)
• Properties of metals


  • Shiny
  • Hard
  • Sonorous
  • Malleable
  • Good conductors of heat and electricity
  • High density
• Compounds


  Substances made of two or more types of atoms chemically bonded together
• All oxides are compounds, and contain a single element bonded with oxygen
• Naming non-metal oxides

  Include a prefix at the beginning of the word 'oxide' to show how many oxygen atoms are in the oxide
• Non-metal oxides

  Often gases
• Metal oxides

  Act as bases - can neutralise acids, producing a salt and water
• Acid + base reaction


  Produces salt + water