Ionic vs. Molecular Compounds

• ionic have high boiling points
• molecular = low boiling points
• ionic are solid at room temp.
• molecular an be any state at room temp
• ionic are soluble
• molecular have low solubility
• ionic are conductive
• molecular are okay conductors
• ionic = one metal, one non metal
• molecular= 2 non metals
• metal + non-metal = ionic bonding
• non-metal + non-metal = covalent bonding
• Write formula for hydroxide ion

  OH-
• Write formula for acetate ion

  C2H3O2-
• Name ion: NH4+

  Ammonium
• Name ion: NO3-

  Nitrate
• Name HC2H3O2

  Acetic acid
• Write the formula for sulfuric acid

  H2SO4 (trick: take sulfate ion, and turn into acid -- this is a hard one)
• Write the formula for hydrofluoric acid

  HF (aq)
• Name HCl (aq)

  Hydrochloric acid
• Write the formula for dinitrogen pentoxide

  N2O5
• Is P4O10 ionic or molecular? Name it.

  Molecular -- tetraphosphorus pentaoxide
• Name SF6

  Sulfur hexafluoride
• Do ionic compounds share electrons?

  NO -- there is transfer of electrons in ionic bonds.
• Is carbon dioxide ionic or molecular?

  Molecular
• Write the formula for sulfur dioxide

  SO2
• Write the formula for mercury (II) oxide

  HgO
• Name FeCl3

  Iron (III) chloride
• Name KC2H3O2

  Potassium acetate
• Name (NH4)Cl

  Ammonium chloride
• Name CaSO4

  Calcium sulfate
• Is sodium bicarbonate ionic? Write the formula.

  Yes -- NaHCO3
• What is the formula for sodium oxide?


  Na2O
• What is the formula for potassium bromide?


  KBr
• LiCl -- what kind of compound? Name it.

  Ionic -- lithium chloride
• Is NaCl ionic or molecular?

  Ionic