ionic&covalent compounds

----- Ionic Compounds
1.composed of 2 or more particles (oppositely charges)
2.held together by electrostatics forming
3.electrons are transferred from a metal ---non metal
Ex

   AgI--Silver(metal) Iodide(non metal)
   Li2O--Lithium(metal)Oxide(non metal)
   Lead(II) nitrate--Pb(NO3)2

Complex Anions: a group of atoms that behave as are atom

  Na2SO4---Sodium Sulphate
  Calcium Hydroxide---Ca(OH)2

------------------------------------------------------------------------------------------------
----Covalent Compounds
-share electrons
-non metal+ non metal
*diatomic molecules: H O F Br N Cl I
-use Greeks prefixes to indicate the number of atoms
1mono  2di   3tri   4tetra    5penta     6hexa    7hepta   8octa    9nona    10deca

Ex CO2--Carbon dioxide
     N2O--Dinitrogen monoxide
     Sulphur trioxide--SO3