1 History of the Atom atom n. A unit of matter, the smallest unit of an element, consisting of a dense, central, positively charged nucleus surrounded.
AP Chapter 5 Structure of the Atom Review Quiz Chapter 5 Net Ionic Equations.
Chapter 4 The Atom – Part 1. In Search of Giants Part 1: Atoms and the Periodic Table (2:02)
Review Models of the Atom Dalton proposes the indivisible unit of an element is the atom. Copyright © 2007 Pearson Benjamin Cummings. All rights reserved.
