-
367
Aristotle
Becomes a student and believes that matter can be broken into smaller pieces. -
400
Democritus' theory
A theory that natures basic particles were atom -
Dalton's Atomic Theory
Discovered all matter is made of atoms. Atoms are indivisible and indestructible. -
John Newlands Law of Octaves
Newlands published his "Law of Octaves" which states that "any given element will exhibit analogues behavior to the eighth element following it in the table." -
Mendeleev's Periodic table
Mendeleev's periodic table was published. -
Crooke's tube
Crooke invents the Crooke's Tube. -
JJ Thomsons' Electron
Discovery of the electron and of isotopes, -
Bohr's Atomic Model
Bohr invents his Atomic Model of the atom -
"Split the nucleus"
Rutherford was widely credited with first splitting the atom and leading the first experiment to "split the nucleus". -
Chadwicks' discovery of the neutron
Discovers the non electrical particle in the atomic nucleus a neutron.
