Did you know matter is made up of atoms? In this article learn about the smallest unit of matter called the atom.

Learn the fundamental properties of atoms in this article. Understand the definition of atomic number, atomic mass, and isotopes. [6 min, 50 sec]

This lesson plan introduces students to scientific models. The students will learn how models of the atom have changed as new evidence is gathered. The students will also learn about the current model of the atom. Each student will make...

Kids learn about the element argon and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics.

Kids learn about the element nitrogen and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of nitrogen.

Kids learn about the element magnesium and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of magnesium.

A chemistry tutorial highlighting historical development of the atomic theory of matter and the periodic table of elements.

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the limits associated with classical physics. Topics covered include light and heat with additional information...

Study chemical bonding in chemistry including atoms, valence electrons, ionic and covalent bonding, and how molecules are formed on this site!