University of St. Andrews (UK)
University of St. Andrews: The Quantum Age Begins
This University of St. Andrews page provides an interesting discussion of the beginning of the age of quantum physics. (Quantum physics/mechanics is thought to govern the energy levels of electrons in atoms.) There is a references link...
American Chemical Society
Middle School Chemistry: Represent Bonding With Lewis Dot Diagrams
Students draw and interpret Lewis dot diagrams for individual atoms and both covalent and ionic compounds.
American Chemical Society
Middle School Chemistry: Protons, Neutrons, and Electrons
Investigate why a charged object is attracted or repelled by another charged object. Explore the concept that the attraction between positive protons and negative electrons holds an atom together.
American Chemical Society
Middle School Chemistry: Moving Molecules in a Solid
Students observe and describe, on the molecular level, how heating and cooling affect the motion of molecules in a solid.
Chem Tutor
Chem tutor.com: Atomic Structure
This page provides a thorough and comprehensible discussion of the structure of the atom. Includes helpful diagrams and instructions for filling electron shells, reading the Periodic Table, and drawing Lewis Structures.
Utah State Office of Education
Utah Science: It All Adds Up!
Atoms and molecules come together to create matter. What happens to the weight of matter when it is frozen? Can matter be destroyed? Check out these activities to clearly understand how this works.
Utah State Office of Education
Utah Science: Matter
Discover atoms and molecules which make up matter, motion of atoms and how to measure the mass, volume and density of matter.
Nobel Media AB
The Nobel Prize: The Nobel Prize in Physics 1935 Presentation Speech
The Nobel Physics Chairman made this speech when presenting the Prize to Chadwick. It clearly explains the importance and depth of Chadwick's work. Site by Nobel e-Museum.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: The Structure of the Elements [Audio Book]
The structure of the atom is uncovered in this interactive tutorial. Discover the different particles of the atom and learn their charges and how they can affect the overall atom.
Science Education Resource Center at Carleton College
Serc: Tic Tac Toe Pick 3 in a Row Atomic Model Assignment
A choice menu assignment where students select between several extension activities that help understand the structure of the atom.
Simon Fraser University
Chem1 Virtual Textbook: Bohr's Model
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses Niels Bohr and his work with the atom. This part of the discussion, focusing on the model itself, brings up...
Simon Fraser University
Chem1 Virtual Textbook: The Quantum Atom
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site specifically addresses the quantum atom and related topics. The related topics include the wave function and its physical...
Simon Fraser University
Chem1 Virtual Textbook: The Shell Model of the Atom
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.
Environmental Chemistry
Periodic Table of Elements: Gallium
A very detailed look at the element Gallium, a member of the Boron Group.
Estrella Mountain Community College
Online Biology Book: Chemistry I: Atoms and Molecules
In this online biology textbook, learn about atoms and molecules as they relate to life. Find out about topics such as electrons and energy, chemical bonding, and chemical reactions.
Crescent Public Schools
The Internet Science Room: The Periodic Table and Atomic Theory of Matter
A chemistry tutorial highlighting historical development of the atomic theory of matter and the periodic table of elements.
Crescent Public Schools
The Internet Science Room: Oxidation Numbers and Chemical Bonding
Through animated diagrams and illustrated examples, students can further their understanding of chemical bonds and oxidation numbers.
Crescent Public Schools
The Internet Science Room: Chemical Formulas
This illustrated tutorial serves as a foundation for understanding chemical formulas in chemistry.
Crescent Public Schools
The Internet Science Room: Formula Mass Calculations
This chemistry tutorial helps students understand that formula mass is the total of all the atomic masses of a chemical formula.
Upper Canada District School Board
Tom Stretton's Advanced Placement Chemistry: Atomic Structure and Periodicity
This chemistry e-textbook provides students with AP-level reading and practice material on atomic structure and periodicity.
Open Curriculum
Open Curriculum: Electron Configurations
This Kahn Academy video will help students understand why electrons align in atoms the way they do.
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Atomic Mobile
Illustrated instructions for how to make a model of an atom (an atom mobile).
PBS
Pbs: Planck Discovers the Quantum Nature of Energy
PBS offers a short summary of the discovery of the quantum nature of the atom by Max Planck. Easy to follow.
Lawrence Berkeley National Laboratory
Berkeley Lab: Particle Adventure: The Standard Model
An introduction to the Standard Model, a theory which attempts to explain atomic structure using leptons, quarks, and force carrier particles.