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Democritus & Aristotle/ John Dalton

Democritus & Aristotle/ John Dalton. Democritus. Democritus was alive 460 B.C. - 370 B.C. Was a Greek philosopher He had no formal education and learned from his travels through out Greece. Democritus's Theory.

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Democritus & Aristotle/ John Dalton

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  1. Democritus & Aristotle/ John Dalton

  2. Democritus • Democritus was alive 460 B.C. - 370 B.C. • Was a Greek philosopher • He had no formal education and learned from his travels through out Greece

  3. Democritus's Theory • hypothesized that all matter (plus space and time) is composed of tiny indestructible units, called atoms. • His beliefs were amazingly ahead of his time, but he could not answer what holds atoms together and therefore lost credibility • *No Experiment*

  4. Democritus • Matter in empty space that has a different appearance • Atoms determine properties

  5. Aristotle • Lived in 384 B.C. - 322 B.C. • Was one of the most influential Greek philosophers • Was educated at the Plato academy in Athens for nearly 20 years

  6. Aristotle's Theory • Belief: rejected Democritus' atomic theory, and he especially didn't agree with the theory that atoms more through empty space, because he didn't believe empty space exists. • He was supported or considered more credible than Democritus because he already had a good reputation • He did not believe that atoms exist but that matter is made of earth, fire, air and water • *No experiment*

  7. Aristotle • Diagram of Aristotle's theory

  8. School - Pardshow Hall (a Quaker school)‏ John Dalton (1766-1844)‏ • English school teacher • From the UK

  9. Atoms of a specific element are different from those of a different element. Different atoms combine in simple whole-number ratios to form compounds. In a chemical reaction, atoms are separated, combined or rearranged Dalton's Theories • “Dalton's Atomic Theory” • Matter is composed of extremely small particles called atoms. • Atoms are indestructible and indivisible. • Atoms of a given element have the same size, mass, and chemical properties.

  10. Dalton's experimental design • Law of definite proportions • And that all matter is the same

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