Abstract
- Periodic Table of Videos (http://www.periodicvideos.com)- MIT Open Courseware (http://www.ocw.mit.edu)- Cambridge Chemistry Challenge (www.c3l6.org)
- Periodic Table of Videos (http://www.periodicvideos.com)- MIT Open Courseware (http://www.ocw.mit.edu)- Cambridge Chemistry Challenge (www.c3l6.org)