1. HMSA Get Polarity pgs 14-15 stamped Today: get through page 22
Ionic Compounds EXIT QUIZ end of next class period.

2. Charges of Ions

3. Ionic Compounds
Ionic Compounds: in general, made up of metal and nonmetal
Charges of ions MUST balance out to 0
Simple Binary Compounds:
(name of metal) + (name of nonmetal with –ide ending)
Transition Metal Cations (and Sn and Pb)
Must include charge of the cation using (roman numerals)
Exceptions: Zn and Cd are always +2, Ag is always +1

5. Polyatomic Ions: MUST MEMORIZE!
Ammonium
NH4+1 
Hydroxide
OH-1 
Carbonate
CO3-2 
Nitrate
NO3-1 
Phosphate
 PO4-3
Sulfate
SO4-2 

6. no no Li2S Li+1 S-2 no no CaBr2 Ca+2 Br -1 yes no Pb3N2 Pb+2 N-3 yes
Cr(OH)3
Cr+3
OH-1
yes no
Titanium (III) Bromide
Ti+3
Br -1
Copper (I) Phosphide
yes no
Cu+1
P-3
Aluminum Phosphate no
yes
Al+3
PO4 -3
Iron (III) Nitrate
yes
yes
Fe+3
NO3 -1
Lead (IV) Sulfate
yes
yes
Pb+4
SO4 -2