1. Polyatomic Ions What they are and how to write their Chemical Formula Naming Ions, Ionic Compounds, Transition Metals and Writing their formulas.

2. Monatomic Ions Mono = one Thus monatomic ions are single atom ions. Na + Cl - Monatomic Ions Fe 3+ O 2- Cations Anions Ionic Compounds Cl - Na + Sodium Chloride

3. Polyatomic Ions poly = many Thus polyatomic ions are ions composed of more than one type of atom. We can represent polyatomic ions as single units when writing chemical formulas. OH - CO 3 2- Hydroxide Carbonate NH 4 + Ammonium SO 3 -2 Sulfite

4. Calcium has a +2 charge and phosphate has a -3 charge. Sodium Hydroxide OH - Ca 2+ PO 4 3- Na + NaOH Sodium has a +1 charge and hydroxide a -1 charge so they combine in a 1:1 ratio. Calcium Phosphate

5. PO 4 3- Calcium has a +2 charge and phosphate has a -3 charge. Sodium Hydroxide OH - Ca 2+ PO 4 3- Na + NaOH Sodium has a +1 charge and hydroxide a -1 charge so they combine in a 1:1 ratio. Calcium Phosphate Ca 2+ Ca 3 (PO 4 ) 2

6. Ammonium Chloride Calcium Hydroxide

7. Ammonium Chloride Cl - NH 4 + NH 4 Cl Ammonium has +1 charge and chloride has a -1 charge so they combine in a 1:1 ratio. Calcium Hydroxide

8. Ammonium Chloride Cl - NH 4 + NH 4 Cl Ammonium has +1 charge and chloride has a -1 charge so they combine in a 1:1 ratio. Calcium Hydroxide OH - Ca 2+

9. OH - Ammonium Chloride Cl - NH 4 + NH 4 Cl Ammonium has +1 charge and chloride has a -1 charge so they combine in a 1:1 ratio. Calcium Hydroxide OH - Ca 2+ Calcium +2 charge and Hydroxide has a -1 charge so they combine in a 1:2 ratio. Ca(OH) 2

10. Assignment [1] Analyze the common polyatomic ions, what is the general difference between ate and ite ions... [2] Write the Chemical formula for the following ionic compounds: a) Sodium Acetate (hot ice!) b) Potassium Chlorate (gummy bear) c) Iron (III) Bicarbonate d) Magnesium Oxalate e) Calcium Nitrate (fertilizer!) [3] Name these ionic compounds: a) Li 2 CrO 4 b) K 3 PO 4 c) AgNO 3 d) NaHCO 3 (baking soda!)