From reactions to the world of acids and bases, the study of chemistry can present certain unique challenges to all types of students. Fortunately, there are helpful sites like ChemTutor. As their site mentions, ChemTutor "begins with the fundamentals and gives expert help with the most difficult phases of understanding your first course in chemistry." The site's layout is quite straightforward,...

Dr. Mark Ott, a professor at Jackson Community College in Wyoming, has created a set of compelling screencasts and accompanying audio tracks that are designed to complement his general chemistry lectures. Visitors can look over these materials at their leisure, and they will find very well-thought out lessons that cover such topics as unit conversion, molecular formulae, balancing chemical...

It can be tricky to remember the position of lanthanides within the periodic table of elements, but this interactive feature from Annenberg Media's "Interactive" series will keep students in the know about those so-called "rare earth" elements. This particular feature begins with "Atomic Basics", which provides an overview of the atom and its various functions. After completing this section,...