The document discusses naming conventions and rules for molecular and ionic compounds. It describes how to determine the formula mass from atomic masses and how to write formulas based on the order of elements. It provides rules for naming binary ionic compounds, acids, and compounds containing polyatomic ions based on their formulas.

1. Molecular View of Elements and Compounds

3. Example 5.1—Show that Two Samples of Carbon Dioxide Are Consistent with the Law of Constant Composition. Since both samples have the same proportion of elements, carbon dioxide shows constant composition. Compare: Solution: composition = mass O : mass C Solution Map: Relationships: Sample 1: 4.8 g O, 1.8 g C; Sample 2: 17.1 g O, 6.4 g C proportion O:C Given: Find: compound composition element masses

15. Some Common Polyatomic Ions PO 3 3 – Phosphite HPO 4 2 – Hydrogen phosphate PO 4 3 – Phosphate Cr 2 O 7 2 – Dichromate CrO 4 2 – Chromate NO 2 – Nitrite NO 3 – Nitrate OH – Hydroxide HCO 3 – Hydrogencarbonate (bicarbonate) CO 3 2 – Carbonate C 2 H 3 O 2 – Acetate Formula Name CN – Cyanide NH 4 + Ammonium MnO 4 – Permanganate HSO 3 – Hydrogen sulfite ( bisulfite) HSO 4 – Hydrogen sulfate (bisulfate) SO 3 2 – Sulfite SO 4 2 – Sulfate ClO 4 – Perchlorate ClO 3 – Chlorate ClO 2 – Chlorite ClO – Hypochlorite Formula Name

16. Periodic Pattern of Polyatomic Ions -ate Groups 3A 4A 5A 6A 7A BO 3 -3 NO 3 -1 SiO 3 -2 PO 4 -3 SO 4 -2 ClO 3 -1 AsO 4 -3 SeO 4 -2 BrO 3 -1 TeO 4 -2 IO 3 -1 CO 3 -2

22. Formula-to-Name Flowchart