AP Chemistry Lesson 3

Atomic Models, Mass Spectrometry, Conservation of Atoms and Mass

Bozeman Science Vodcasts:

http://www.bozemanscience.com/ap-chem-008-atomic-models
http://www.bozemanscience.com/ap-chem-009-mass-spectrometry
http://www.bozemanscience.com/ap-chem-012-conservation-of-atoms