Don't lose your points!
Sign up and save them.
+
Atomic Models Evolve

Atomic Models Evolve

See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

28 Sophia partners guarantee credit transfer.

263 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Atomic Models throughout History

The atomic theory has changed and evolved throughout history. This screencast shows how scientists have disproved theories only to replace it with a more advanced atomic model/theory. This video also demonstrates the position of electrons the electron cloud theory.

Source: How Stuff Works, and Prentice Hall textbook