American
Chemical Society
High School Chemistry Resources http://www.acs.org
Virtual Chemistry Club or VC2
has a mix of chemistry resources of interest to high school
students-careers, science project ideas, forensic mysteries,
sample
Olympiad
Test questions, etc.
ChemMatters magazine
shares full text from selected articles as well as a free
Teacher's Guide with a wealth of in-depth information and
classroom materials suggested by the topics in the current issue
of the magazine. There's an extensive archive as well.