Atomic Theory Handout _3 Atomic Theory

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

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
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:
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online