Events
Jhon Dalton
Suggested the idea of electronsARISTOTLE
He stated that everything
was made from 4 basic elementsDEMOCRITUS
He stated that everything
was of indivisble particlesJHON WOLFGANG
JHON NEWLANDS
DIMITRI MENDELEEV
HENRY MOSELEY
Worked in the creation adn organization of the periodic tableIn that same year in mexico, the war of "reforma" had begun.HENRI BECQUEREL
Exposed the idea of empty space in an atomPorfiro diaz presidency started
wich then turned into an unoffical
dictatorshipJ.J. THOMSON
Proved the existance of empty space on the atomMARIE & PIERRE CURIE
Discovered two new elements and the term radioactiveERNEST RUTHERFORD
Experimented with beta rays
in gold foil and discovered
that atoms weren't
all piled up togetherOne year after, the Mexican revolution started.NIELS BOHR
MAX PLANCK
ALBERT EINSTEIN
Suggested that the atom had several energy levelsIn this same year in mexico, the revolution ended.HEISSENBERG
explained that it was
impossible to know the e
xact position of the atomHEISSENBERG
explained that it was
impossible to know the e
xact position of the atom (copy)
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