Metals and Non-Metals

• What are metals defined as in chemistry?

  Elements that can form positive ions
• How are non-metals defined in chemistry?

  Elements that don't generally form positive ions
• Why do atoms tend to react?

  To form full outer shells
• How do metals achieve a full outer shell?

  By losing electrons
• How do non-metals achieve a full outer shell?

  By gaining or sharing electrons
• When are metals more reactive?

  When they lose electrons more easily
• When are non-metals more reactive?

  When they gain electrons more easily
• Where are metals more reactive on the periodic table?

  Bottom left of the periodic table
• Where are non-metals more reactive on the periodic table?

  Top right of the periodic table
• What are the general properties of metals and non-metals?

  Metals:

  • Shiny appearance
  • Strong but malleable
  • High melting and boiling points
  • Good electrical and thermal conductors

  
  

  Non-metals:

  • Dull appearance
  • Brittle
  • Low melting and boiling points
  • Poor conductors