Other
Iun: Modern Atomic Theory
This is an excellent site with information on the discovery of the atom and the different models. Includes a sample question and answer using Planck's constant.
Other
Fagan Finder: All About Rss
This page is about using RSS and Atom, from a non-technical standpoint.If you are interested in creating RSS feeds, see this RSS Workshop, or Atom for Publishers for Atom.
Thomas Jefferson National Accelerator Facility
Jefferson Lab: Coloring Book: Quarks More Than Meets the Eye
Understand and appreciate the research conducted at Jefferson Lab about the smallest particle, the quark.
Science Museum, London
Science Museum: Online Stuff: Marie Curie and the History of Radioactivity
Read about Nobel Prize winner, Marie Curie's life, and her historical work with radioactivity.
Sophia Learning
Sophia: Models of the Atom: Lesson 3
Describe how the model of the atom advanced as scientific knowledge increased. This lesson is 3 of 3 in the series titled "Models of the Atom."
Sophia Learning
Sophia: Atomic Radius: Lesson 3
This lesson will define atomic radius. It is 3 of 3 in the series titled "Atomic Radius."
Sophia Learning
Sophia: Converting From Grams to Particles: Lesson 2
This lesson demonstrates how to convert from grams to particles (molecules, atoms, ion). It is 2 of 2 in the series titled "Converting from Grams to Particles."
American Chemical Society
Middle School Chemistry: Protons, Neutrons, and Electrons
Explore the particles that make up atoms: protons, electrons, and electrons.
Famous Scientists
Famous Scientists: Aage Bohr
Learn about the life of Aage Niels Bohr, and see how his work was pivotal in the development of the theory of the structure of the atomic nucleus.
Other
National Research Council: Elementary Particle Physics
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...
Wisc-Online
Wisc Online: Physics: Matter Review
Review matter and atoms in this Jeopardy-style game.
CK-12 Foundation
Ck 12: Chemistry: Gold Foil Experiment: Rutherford's Atomic Model
[Free Registration/Login may be required to access all resource tools.] This site explains Rutherford's discovery of the nucleus and the planetary model of the atom and the role of gold foil experiment in refining the atomic model. It...
CK-12 Foundation
Ck 12: Chemistry: Democritus' Idea of the Atom
[Free Registration/Login may be required to access all resource tools.] Explains the ideas of Democritus dealing with the divisibility of the atom.
CK-12 Foundation
Ck 12: Physical Science: Elements
[Free Registration/Login may be required to access all resource tools.] Explores elements and their different properties, the history of elements, and how atoms relate to elements.
Web Elements
Web Elements Periodic Table: Atomic Radius
This Webelements website provides a short but detailed definition of atomic radius. Includes links to other chemistry sites.
Sophia Learning
Sophia: Characteristics of Matter
Find out the basic characteristics and main properties of all matter.
Sophia Learning
Sophia: Characteristics of Matter
A podcast tutorial describing the main characteristics of matter. [1:02]
Sophia Learning
Sophia: Converting From Particles to Moles
A guided slide show presentation illustrating how to convert from particles to moles.
Sophia Learning
Sophia: Democritus
A guided lesson explaining Democritus' description of matter as discontinuous.
Sophia Learning
Sophia: Development of the Early Atomic Theory
This guided lesson summarizes the historical development of atomic theory.
Sophia Learning
Sophia: Molecules
An audio podcast accompanied by a diagram of a water molecule helps the learner understand molecular structure. [0:23]
Sophia Learning
Sophia: Valence Electrons and Core Electrons
Through a series of slide show presentations and a video lesson, strengthen your understanding of valence electrons. [2:46]
Sophia Learning
Sophia: Valence Electrons
During this exercise, practice finding the number of valence electrons in an element. [1:22]
Sophia Learning
Sophia: Atomic Number
Learn what atomic number is, and what happens if the numbers of protons in an atom changes.