Stephen Lower, a retired professor at Simon Fraser University, created this expansive and instructive website as a supplement to formal chemistry education for undergraduate students. Visitors will find in-depth descriptions along with several diagrams dealing with chemical bonding issues including their properties, shared-electron covalent bonds, hybrid orbitals, coordination complexes, and...

The Catalyst is a Web site dedicated to providing online chemistry resources for the secondary education teacher. The resource links page contains dozens of links organized by subject such as organic chemistry, periodic tables, history of chemistry, experiments, teaching, and supplies. Other highlights of the site include a teacher's forum, links to other high school chemistry pages, a question...