Although I am from Australia - teaching the Australian chemistry syllabus I am sure that this is applicable and relevant to the US syllabus too.
If you would like me to present any chemistry theory please feel free to contact me. There will be an international Academy Plus Education
site coming soon - with a lot of free goodies so keep tuned. http://www.youtube.com/user/AcademyPlus#p/a
Thankyou & enjoy!!!!!!