Concord Consortium
Concord Consortium: Excited States and Photons
Investigate how atoms can be excited to give off radiation (photons) with models of electron energy diagrams.
Concord Consortium
Concord Consortium: Where Does All the Energy in an Explosion Come From?
In this module Activity 2 investigates What happens to atoms during a chemical reaction? In this activity students explore chemical reactions and develop a model to explain observations of chemical reactions.
Sophia Learning
Sophia: Development of the Early Atomic Theory
This guided lesson summarizes the historical development of atomic theory.
Environmental Chemistry
Periodic Table of Elements: Gallium
A very detailed look at the element Gallium, a member of the Boron Group.
University of Hamburg
University of Hamburg: Sugars, Carbs, Monosaccharides
Description of the chemical makeup of monosaccharides, accompanied by molecular diagrams of glucose, galactose, and fructose. Links to more in depth information.
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...
Sophia Learning
Sophia: Valence Electrons
During this exercise, practice finding the number of valence electrons in an element. [1:22]
Wolfram Research
Wolfram Science World: Sir Joseph John Thomson (1856 1940)
This site provides a brief biography of the english physicist J.J. Thomson.
Other
Fact index.com: Balmer Series
Fact-Index.com offers a brief dictionary definition of the Balmer series, including hyperlinked terms.
Other
Fact index.com: Paschen Series
Fact-Index.com offers a dictionary definition of the Paschen series, including hyperlinked terms.
Sophia Learning
Sophia: Atomic Mass: Lesson 4
This lesson explains what is represented by the atomic mass, and how it varies from one element to the next. Module includes a slideshow and a quiz.
Sophia Learning
Sophia: Conservation of Mass: Lesson 2
This lesson explains the law of conservation of mass within chemical reaction with audio and quiz questions.
Khan Academy
Khan Academy: Electromagnetic Waves: The Electromagnetic Spectrum and Photons
An article that discusses the coupling of an electric field with a magnetic field to create electromagnetic waves. Article also discusses how different types of electromagnetic waves have different wavelengths which forms the...
Khan Academy
Khan Academy: Spectroscopy: Interaction of Light and Matter
Tutorial provides a discussion of UV-Vis spectroscopy, infrared (IR) spectroscopy, and the Beer-Lambert law.
Khan Academy
Khan Academy: Photoelectric Effect
Article explains the experiments on the photoelectric effect and how these experiments led to the idea of light behaving as a particle of energy called a photon.