Atomic Theory Handout _3 Atomic Theory

Atomic Theory Handout _3 Atomic Theory - Handout 3 Who's...

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Handout # 3 Who's Who in the Development of Atomic Theory Ancient Egyptians knew of static electricity and electric charge behavior. Like charges repel and opposite charges attract. Leucippus and Democritus (Greece, approx. 400 BC) First postulated "atoms" as smallest individual unit of pure substance. "atomists" contradicted previous "continuist" theory. Plato and Aristotle were "continuists." Ben Franklin (approx. 1700's) discovered electricity with kite and lightning. John Dalton (approx. 1803) an English school teacher, based his atomic theory on what he already knew: Law of Conservation of Mass - Lavoisier, 1796. Law of Definate Proportions - Proust, 1800. Dalton's Law of Multiple Proportions (approx. 1805), CO 2 vs CO Dalton's Atomic Theory Michael Faraday (approx. 1800's) works with electrolysis. Henri Becquerel notices phenomenon which Marie Curie later names and characterizes as "radioactivity" (approx. 1800's). Curie wins Nobel Prize for her work. Types of radioactivity:
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This note was uploaded on 09/21/2009 for the course CHEM 101 taught by Professor Farahh during the Fall '02 term at UNC.

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