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

This essay, written for Teachers' Domain, describes the foresight and pattern recognition that Russian chemist Dmitri Mendeleyev used to develop the modern periodic table of elements.

Chemical composition is a section of a larger overview on Chemistry, covering a variety of aspects. This section focuses on elements, atoms, compounds, and structure. Examples, formulas, and pictures are provided.

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.

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...

In this activity, students construct models of molecules using marshmallows and gum drops.

Produce light by bombarding atoms with electrons. See how the characteristic spectra of different elements are produced, and configure your own element's energy states to produce light of different colors.

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses atomic electron configurations. Specifically, the Aufbau rules are discussed with information on energies of...

Students will use bags of beads with known quantities of electrons, neutrons and protons to identify the element that they represent.

Covering a range of eight topics related to chemistry, this resource provides a wealth of information complete with pictures, charts, graphs, and examples. Includes information on elements, compounds, atoms, molecules, structures,...

Atoms are very, very small. Atoms are so small that it is often said that there are as many atoms in a single grain of sand as there are grains of sand on all of the world's beaches - certainly a difficult thing to prove, but you get the...

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

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.

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

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...

An interactive website where students learn about the basics of an atom, periodic tables organization, and the structure and properties of matter. Module includes an introduction and five lessons that are followed by a quiz and an...

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site focuses specifically on the Periodic Table of Elements with information on the table's organization methods along with...

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

Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses shared chemical bonds between two elements resulting in electronegative and electropositive outcomes.

The ways in which an element or compound such as water moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. All of the atoms that are building blocks of living things are a...