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Theory of Atoms (J.J. Thompson (Discovered electron (Experimentation,…
Theory of Atoms
J.J. Thompson
Discovered electron
Experimentation, electric currents, gasses
Cool mustache
Plum Pudding
Democritus
Atoms are:
Indivisible
Indestructible
Theories lack experimentation
GoldStein
Discovered Protons
Positively charged particle
Called them canal rays
Rutherford
Discovers atoms have nucleus
Nucleus has protons and neutrons
Gold Foil Experiment
John Dalton (1766)
Theories:
Different Elements=Different Adams
Atoms=Physically/Chemically combined/compounds
Same element=identical Adams
Atoms of one element don't change to atoms of another element
Elements are composed of atoms/indivisible
ChadWick
Discovered Neutron
Neutral
Bohrs
Atom is structured like a planetary orbit
Electrons go around nucleus
Energy level depends based on amount of electrons
Receive or emit energy