1. AP Chem Reminder: Lab Write-Up due Fri 10/5 What’s left in this unit
Naming compounds
Drawing structures for compounds
Unit 2 Test ~Mon 10/8 and Tues 10/9

2. Naming Covalent Compounds
2 or more nonmetals
Less electronegative element usually listed first
Prefix denotes # atoms of each element
Exception: mono is not used on the 1st element
Ending of 1st element is not changed.
Ending of 2nd element is changed to -IDE.
Drop last vowel on prefix if element starts with an “a” or an “o” (i.e. mono + oxide = monoxide)

4. 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. Charges of Ions

6. Polyatomic Ions

10. Acids
Hydrogen + 1 or more nonmetals.

11. Acid Nomenclature
If the anion in the acid ends in -ide, change the ending to -ic acid and add the prefix hydro- .
HCl: hydrochloric acid
HBr: hydrobromic acid
HI: hydroiodic acid
© 2009, Prentice-Hall, Inc.

12. Acid Nomenclature
If the anion in the acid ends in -ate, change the ending to -ic acid.
HClO3: chloric acid
HClO4: perchloric acid
© 2009, Prentice-Hall, Inc.

13. Acid Nomenclature
If the anion in the acid ends in -ite, change the ending to -ous acid.
HClO: hypochlorous acid
HClO2: chlorous acid
© 2009, Prentice-Hall, Inc.

16. Naming Organic Molecules
Organic compounds must contain carbon.

17. Organic Molecules: Functional Groups