The Committee on Elementary-Particle Physics, part of the U.S. National Research Council, presents this massive report on particle physics. It's a definitive document. Surprisingly readable, totally detailed. Start with the Table of...

Find out the basic characteristics and main properties of all matter.

A podcast tutorial describing the main characteristics of matter. [1:02]

Through a series of slide show presentations and a video lesson, strengthen your understanding of valence electrons. [2:46]

Play games to help you memorize information about the element silver. Play word seach, concentration and flashcards with questions about atom symbol, atomic number and more.

Kid's learn about the science of the molecules. Tiny chemistry and compounds of atoms and elements make up all matter.

[Free Registration/Login Required] This flipchart is a guided activity to help students compare different types of matter: atoms and molecules, elements and compounds, mixtures and solutions. It corresponds to Virginia science SOL 5.4.

This reading is an introduction to the great variety of steroids and their many different uses.

Explains the basic tenets of Dalton's atomic theory.

These notes from a Chemistry 101 class at Indiana University Northwest provide a simple description of atomic symbols and two examples of how to use those symbols in isotope notation.