ChemPRIME
ChemPRIME is a free, online General Chemistry Text with a unique wiki format: Exemplars from many fields are presented as a means of learning chemical principles.
The NSF full Proposal has all the details.
Abstract: :http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0837607
ChemPRIME is briefly described in ChemPRIME Awaits Your Contribution which appeared in the CHED Newsletter for Fall 2009.
...and in Justin Shorb's presentation at the Fall 2009 Meeting.
...But it's easiest just to visit the JCE Chemistry Collective wiki site and see how it works:
http://wiki.chemprime.chemeddl.org/index.php/Main_Page
ChemPRIME may use Moodle to administer quizzes. The NSDL/ChemEdDL Moodle site, which can be used to explore the Moodle CMS and even use it for a class, is
http://moodle.chemeddl.org/login/index.php
KU ChemPRIME Introductory PowerPoint