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THE AMAZING ELEMENT ENCYCLOPEDIA
Democritus (Greek era)
He claimed all matter including space and time are made up of atoms.
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John Dalton
(1803)
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All atoms cannot be broken down into anything simpler.
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Two or more elements joins together makes a compound.
John Dalton
(1803)
J.J. Thomson
(1897)
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Discovered electrons as a part of an atom that is smaller, proving Dalton's theory of how atoms cannot be made into something simpler is wrong.
J.J. Thomson
(1897)
Ernest Rutherford
(1911)
He claimed all matter including space and time are made up of atoms.
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Proves that all atoms must have a central nucleus.
Ernest Rutherford
(1911)
Niels Bohr
(1922)
Developed the modern Bohr nuclear atom model.
Niels Bohr
(1922)
Peter W. Higgs
(1964)
Developed the theory that sub-atomic particles gained mass by an unknown particle which was called Higgs Boson
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