1. Minds On… List the following compounds in order from LOWEST boiling point to HIGHEST boiling point. Methanol (CH 3 OH)Propane (C 3 H 8 )Pentane (C 5 H 12 ) Give reasons for your choice

2. Nomenclature: Part II LG: I can name and write formulas for multivalents, polyatomics and hydrates

3. Multivalents: Classical Naming In the classical system, multivalent are named by adding different suffixes to the Latin name of an element – “-ic” indicates the higher charge – “-ous” indicates the lower charge Latin Names: – Iron: Ferric (3+)Ferrous (2+) – Copper: Cupric (2+) Cuprous (1+) – Tin: Stannic (4+)Stannous (2+) – Lead: Plumbic (4+)Plumbous (2+)

4. Practice Name each of the following with the IUPAC name and Classical name FeCl 2 PbO SnS 2 CuF 2

5. Polyatomic Compounds Naming Rules – Name the cation first – Name the anion second – Example: Mg(OH) 2 Formulas for compounds – Use “Teeter-Totter” to balance +ve and –ve charges – Example: Lead (IV) Sulfate

6. Oxyanions Oxyanions are polyatomic compounds that contain oxygen (ie. NO 3 -, SO 3 2- ) – Number of oxygens determines prefix and suffix of ion name – Example:

7. Hydrates A hydrate is a compound that contains water molecules within its crystal structure. When heat is applied, hydrates will decompose to produce water vapour and an ionic compound CuSO 4  5 H 2 O  CuSO 4 + 5 H 2 O When the water is removed, the remaining ionic compound is referred to as anhydrous.

8. Naming Hydrates The IUPAC name for hydrates uses Greek prefixes to indicate the number of water molecules. CuSO 4  5 H 2 O = Copper (II) Sulfate Pentahydrate

9. Homework Old Text: Pg 96-97 # 16-21