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Period: 100 to Jan 1, 600
Before Christ
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370
Aristotle
Rejected Democritus’ theory and agreed with Empedocles. He added qualities to Empedocles theory these quantities are: dry, moist, hot, and cold. -
400
Plato
Thought that the idea of atomic forms was beyond the capability of the human senses. -
420
Democritus
Maintained Leucippus’ ideas and formulated that the properties of substances can be described by the shapes and arrangement of atoms. -
450
Empedocles
Described matter with 4 different components: Earth, Air, Fire, and water. Created the idea that there are elemental substances. -
Leucippus
He created the idea of atoms.