1. Arrangement
   1. increasing atomic number
   2. electrons in outer energy levels
      1. similar chemical properties
      2. ion formed
         1. group1 : 1+
         2. group2 : 2+
         3. group3 : 3+
         4. group4 : x
         5. group5 : 3-
         6. group6 : 2-
         7. group7 : 1-
         8. group8 : x
   3. Periods
      1. Rows
      2. 1 to 7
   4. Groups
      1. columns
      2. 1 to 7
      3. group 8 = 0
   5. families
      1. group 1
         1. alkali metals
         2. more reactive down the group
      2. group 2
         1. alkaline earth metals
      3. group 7
         1. halogens
         2. more reactive moving up the table
2. Metals
   1. left and middle
   2. properties
      1. good conductor of electricity
      2. high melting point
         1. !mercury low melting point!
      3. good cvonductor of heat
      4. shiny
      5. malleable
         1. hammered into shape
      6. ductile
         1. drawn into wire
      7. sonorous
         1. ring when struck
         2. !alkali metals with low melting point not sonorous!
   3. metalic character
      1. increases down groups
      2. outer atom further form nucleus
         1. removed more easily
         2. react to form ions
3. Non-metals
   1. right
   2. properties
      1. poor conductor of electricity
         1. !carbon-graphite good conductor!
      2. low melting point
         1. !high melting point!
            1. carbon
            2. silicon
      3. poor conductor of heat
      4. brittle
4. Metalloid
   1. metal properties
   2. non-metal properties
   3. antimony
   4. germanium
   5. polonium