CK-12 Foundation
Ck 12: Chemistry: Stock System Naming
[Free Registration/Login may be required to access all resource tools.] Explains Stock system and nomenclature of transition metal compounds.
California State University
Csudh Www Project for Chemistry: Nomenclature
This site from CSUDH WWW Project For Chemistrygives an interactive online nomenclature practice problems and drills. Click on star icon to start drill.
Other
Fernbank: Naming Chemical Compounds
Learn how to name chemical compounds. Scientist world over use a standard method for naming chemical compounds based on an international standard that makes working with chemicals not only precise but safe as well. Includes quiz.