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460
Democritus
Used the words "Atoms" to describe particles. First proposed the existence of an ultimate particle. -
Johann Becher
developed the phlogiston theory -
Antoine Lavoiser
proposed combustion theory -
Joseph Priestly
assigned negative mass to phlogiston -
Joseph Proust
proposed the law of constant composition -
John Dalton
propsed the law og multiple proportions -
Joseph Gay lussac
Law of combining Volumes -
Amadeo Avogadro
Avogrado's Hypothesis -
Dimitri Meendel
proposed periodic law and made the periodic table -
Stanislao Cannizzaro
agreed with Avagadro -
Aristotle
proponent of the continuum