© 2012 Pearson Education, Inc. Mack Chemistry Chapter 4 Atoms and Elements Kanya Ellington M.S. McClymonds…

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© 2012 Pearson Education, Inc. Indivisible: The Atomic Theory 400 BCE --Democritus, a Greek philosopher said that if you divide matter into smaller and smaller pieces, you end up with tiny, indestructible particles. He called them atomos, or “atoms,” meaning “indivisible.” The idea was not warmly received and did not gain traction for 2000 years