Science Timeline
Category: Other
Updated: 14 Feb 2020
Contributors
Created byClaudia Scanlan
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Events
The last four elements were
discovered by scientists to
complete the periodic tableFrauncium was the last
element to be discoveredParticle nature of matter
was observed, in 1827The atomic theory of
matter was proposedOxygen was
discoveredBefore the 1700s, the study of
substances was called alchemyPeriods
Natural occurring elements were discoveredModern chemistry and the
scientific methodJoseph PriestleyCarl
Wilhelm
ScheeleAntoine
Laurent
LavoisierRobert Brown
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