Environmental Chemistry
Environmental chemistry.com: Anatomy of an Atom
Explains the basics of atomic structure, from simple definitions to information about quantum theory. Accurate and helpful basics whether or not you need the more advanced information.
Science Education Resource Center at Carleton College
Serc: Investigating Isotopes and Average Atomic Mass Using Pennies
In this activity, students apply what they have learned about weighted averages, isotopes, and systems of equations to a new situation - coins in a sealed container. They learn some historical information regarding the composition of...
CK-12 Foundation
Ck 12: Chemistry Simulation: Atom Builder Challenge
[Free Registration/Login Required] Learn what makes each element unique by building the mystery atoms in the periodic table.
Department of Defense
Do Dea: Chemistry Review
Review atoms with this slideshow. You can choose to listen to the review or read the accompanying text. At the end, play the game to review the basics of atoms that you have just learned about. You may play the game as many times as...
Vision Learning
Visionlearning: Atomic Theory and Structure: The Mole: Its History and Use
An introduction to the mole, a unit of measurement that quantifies atoms and molecules.
Wikimedia
Wikipedia: Atomic Number
Wikipedia provides the definition of the term, "Atomic number," a term used in chemistry and physics to represent the number of protons in the nucleus of an atom.
Science Education Resource Center at Carleton College
Serc: The Mole in Chemistry: Determining the Number of Atoms in Everyday Items
Students explore the concept of the mole as a measure of quantity. They build spreadsheets that allow them to convert between moles, grams, and atomic mass units for given quantities of everyday items, elements, and simple chemical...
Mocomi & Anibrain Digital Technologies
Mocomi: Structure of an Atom
An atom is made of three parts - protons, neutrons, and electrons. Here you can explore these different parts.
Annenberg Foundation
Annenberg Learner: Isotopes, a Weighty Matter: Isotope Quiz
You will be presented with three different isotopes of the same element. See if you can calculate the atom's average relative mass.
Other
Characteristics of Energy and Matter
A lengthy page from the Fundamentals of Physical Geography site. Energy is distinguished from matter, and the different forms of energy are identified and discussed. Four types of heat transfer (convection, advection, conduction,...