A History of Chemistry. Democritus Democritus 460 BCE to 370 BCE 460 BCE to 370 BCE was a student of Leucippus and co- originator of the belief that all.

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Presentation transcript:

A History of Chemistry

Democritus Democritus 460 BCE to 370 BCE 460 BCE to 370 BCE was a student of Leucippus and co- originator of the belief that all matter is made up of various imperishable, indivisible elements was a student of Leucippus and co- originator of the belief that all matter is made up of various imperishable, indivisible elements Leucippusmatterelements Leucippusmatterelements He called atoma (sg. Atomon) or "indivisible units" He called atoma (sg. Atomon) or "indivisible units" Ancient Greeks

Plato and Aristotle Plato and Aristotle Aristotle (384 BCE to 332BCE) Aristotle (384 BCE to 332BCE) Theory of “Hyle” Theory of “Hyle” Believed there were 4 classic elements Believed there were 4 classic elements Earth, fire, water, air Earth, fire, water, air

Alchemy ~ 1600 ACE ~ 1600 ACE Mystical pseudoscience Mystical pseudoscience Searched for “philosopher’s stone” Searched for “philosopher’s stone” Some goals were transmutation, panacea and universal solvent Some goals were transmutation, panacea and universal solvent

Modern Chemistry Lavoisier Joseph Louis Proust

Lavoisier’s Apparatus

John Dalton Atomic Theory of Matter Atomic Theory of Matter What is it???? What is it????

JJ Thomson