It's About Time
Metals and Nonmetals
Did you know you can melt the metal gallium with just the heat of your hand? Pupils observe and test materials in order to classify them as metal or non-metal. A reading passage and analysis questions wrap up the lesson.
Other
Especial Gas Inc.: Sulfur Properties and Compounds
This page from Especial Gas Inc. contains some very interesting information about the element sulfur, and some of its common compounds. The history and relative abudance of the element is discussed, as well as where it can be found. The...
Chemicool
Chemicool.com: Silicon
This site from Chemicool.com provides a very through set of tables summarizing many physical and chemical properties of silicon.
Amethyst Galleries
Amethyst Galleries: Mineral Gallery: Minerals by Class
This is a detailed reference list of minerals and mineral classes.