1. Ionic Compound Names and Formulas Why is sodium acetate my favorite compound?

2. Ionic Compound Names and Formulas Goal: to unambiguously... go from a name to a formula go from a formula to a name

3. + -

4. Polyatomic Ions As the name implies, polyatomic ions are made of several atoms. These atoms are joined by strong covalent bonds (which we'll study in another unit). For now, just think of them as a group of atoms glued together that, as a group, have a charge.

5. Polyatomic Ions Polyatomic ions are everywhere and are important. The sooner you learn to recognize them, the easier your understanding of chemistry will be. You will need to memorize 10 of the most common (there are MANY more).

6. The ten you need to know are: AmmoniumNH4 +1 Nitrate NO3-1 ChlorateClO3 -1 PermanganateMnO4 -1 AcetateC2H3O2 -1 HydroxideOH -1 Sulfate SO4-2 CarbonateCO3 -2 ChromateCrO4 -2 PhosphatePO4 -3

8. C2H3O2Acetate -1 NH4Ammonium +1 CO3Carbonate -2 ClO3Chlorate -1 CrO4Chromate -2 OHHydroxide -1 NO3Nitrate -1 MnO4Permanganate-1 PO4Phosphate -3 SO4Sulfate -2 NameCharge

9. AcetateC2H3O2 -1 AmmoniumNH4 +1 CarbonateCO3 -2 ChlorateClO3 -1 ChromateCrO4 -2 HydroxideOH -1 NitrateNO3 -1 PermanganateMnO4 -1 PhosphatePO4 -3 SulfateSO4 -2 Formula Charge

11. Polyatomic ions act just like single-atom ions. They bond with ions of the opposite charge in the same way.

12. Ionic Compound Names and Formulas ALL ionic compounds are made of two ions: a positive ion (cation) a negation ion (anion)

13. To name a compound, simply list the cation name, then the anion name. Naming compounds Yes, it's that easy!

14. Binary Compound ( made of 2 elements) Ternary Compound ( made of more than 2 elements -- includes a polyatomic ion) Ca+2 Cl-1 with Illustration: Ca+2 Cl-1 Ca Cl2 Formula: Ca Ca+2 with NO3-1 (NO3)2

15. Cation (positive ion) can be: a metal: name is the same as the atom a polyatomic ion (NH4+1): NEVER change the name of a polyatomic ion. Naming compounds +

16. Cation (positive ion) can be: a metal: name is the same as the atom [If the metal can have more than one charge (many transition metals) use Roman numerals in the name to indicate the charge.] Naming compounds +

17. Anion (negative ion) can be: a non-metal: change the ending to -ide a polyatomic ion: NEVER change the name of a polyatomic ion. Naming compounds - (You never need Roman numerals for anions)

22. Ca(ClO3)2 NH4ClO3 NH4Br NH4NO3 NH4MnO4 Ca3N2 (NH4)3N2 CaSO4(NH4)2SO4 CaCO3 (NH4)2SO4 AlBr3 Al(MnO4)3Al(NO3)3 NH4OH CaOH (NH4)2CrO4CaCrO4 NH4C2H3O2 Ca(C2H3O2)2 (NH4)2SO4 CaSO4 C2H3O2

23. Binary compounds: those with only 2 elements (eg. NaCl) Ternary compounds: those with more than 2 elements, meaning they have a polyatomic ion (eg. NaClO3).

24. Naming binary compounds with a metal that has only one charge. Simply name the cation, then the anion (ending with -ide). NaCl MgO BaCl2 KI Li2F CaI2 CaS Ca3N2 BeBr2

25. Naming binary compounds with a metal that can have multiple charges. Name the cation, indicating the charge with a Roman numeral, then the anion (ending with -ide). CuCl FeO FeCl3 SnS CuF Fe2O3 CuS PbO2 PbO

26. Naming ternary compounds. Name compound as you would a binary, but NEVER change the name of the polyatomic ion. NaNO3 NH4Cl FeClO3 Ca3(PO4)2 Li2SO4 KMnO4 CaCO3 Pb(OH)2 (NH4)2O

29. Mini Quiz #1 Name the following compounds: 1. CaCl2 2.Na2O 3.MgO 4.AlCl3 Give the balanced formulas: 5.Sodium oxide 6.Lithium fluoride 7.Potassium sulfide Name the following compounds: 1. NaCl 2.CaS 3.Na2S 4.AlBr3 Give the balanced formulas: 5.Calcium chloride 6.Lithium oxide 7.Magnesum cloride A B

30. Mini Quiz #2 Name the following compounds: 1. FeCl2 2.Cu2O 3.SnO 4.FeCl3 Give the balanced formulas: 5.Copper II oxide 6.Lead IV fluoride 7.Iron II chloride Name the following compounds: 1. CuCl 2.FeS 3.PbCl2 4.FeBr3 Give the balanced formulas: 5.Lead II chloride 6.Copper I oxide 7.Iron III cloride A B

31. Mini Quiz #3 Name the following compounds: 1. (NH4)Cl 2.Cu2SO4 3.CaCO3 4.K3PO4 Give the balanced formulas: 5.Magnesium chlorate 6.Lithium carbonate 7.Calcium nitrate Name the following compounds: 1. Mg(C2H3O2)2 2.NaClO3 3.NH4NO3 4.Ca(OH)2 Give the balanced formulas: 5.Sodium hydroxide 6.Potassium sulfate 7.Calcium chromate A B

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