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Democritus
Developed the idea that particles make up the worlds compounds, called them ''Atomos" -
Lavisoter
He theorized the law of conservation and the combution theory. He also named and discovered several elements, including oxygen. -
John Dalton
Born 1766 Died 1844 Proprosed the idea of mols and a system with symbols to represent elements. He also relized the existnece of elements that make up the worlds compounds. -
JJ Thomson
Discoved that there are objects (atoms) suraound a larger mass (atoms) of a particle. -
Rutherford
Proposed that the majority of at the atoms weight is made up of empty space made up of electrons -
Niels Bohr
Born 1885 Died 1962 Designed a modle for the shape and nature of an atom. He described electrons orbiting like planets. -
Elwin Schrodinger
Born 1887 Died 1961 Described how electorns orbet in a electron cloud and have no deninent design. -
James Chadwick
Born 1891 Died 1971 He discovered an unknown particle, a neutron, this helped create the nuclear bomb because a neutron can split the atom because it isn't pushed away by the atoms neuteral charge -
Aristotle
Born: 384 BC Died 322 BC He believed in four elements that made up everything in the world, fire, wind, watrer, and earth.
