Khan Academy
Khan Academy: Dalton's Atomic Theory
An article describing Dalton's atomic theory. Learn how this theory was the first attempt to describe a fundamental part of matter, atoms. Article also discusses where the theory is incorrect based on the knowledge we have today.
CK-12 Foundation
Ck 12: Evolution of the Atomic Model
[Free Registration/Login may be required to access all resource tools.] Students take a closer look at how our understanding of the atom has evolved over time.
Cosmo Learning
Cosmo Learning: Ap Chemistry With Chemguy
Need to review a topic for AP Chemistry? This site features a collection of video lectures covering the curriculum of AP Chemistry. The lectures are broken up by topics and vary in length. Lectures cover thermodynamics, bonding,...