Chemistry Lesson Plans, from the SMILE Project  
   About 200 lesson plans.
   http://www.iit.edu/~smile/cheminde.html

Chemistry I Index  
   Chemistry I resources, mainly demonstrations and labs. Includes some teaching tips, exercises and handouts.
   http://chem.lapeer.org/Chem1Docs/Index.html

Chemistry II Index  
   Chemistry II resources, mostly labs.
   http://chem.lapeer.org/Chem2Docs/Index.html

Chem Exam Page  
   Not exactly lesson plans, but there are nearly forty chemistry exams and quizzes available for download in pdf format.
   http://chem.lapeer.org/Exams/Index.html

Salt, the Essence of Life: A Multidisciplinary Curriculum for Students  
   Salt, sodium chloride, can be used to teach many subjects. The Salt Institute has prepared this high school curriculum for teachers, but students can use it independently.
   http://www.saltinstitute.org/42a.html

Middle School Science Lesson Plans  
   Includes number of lesson plans in chemistry.
   http://www.middleschoolscience.com/