Atomic theory timeline

By PetersheSEY
  • 400

    Democrits (400 B.C.

    Democritis is a greek philospher that propsed that small particles called atoms make up all of matter

  • John Dalton

    John Dalton
    a Brittish scientist reintroduces the concept of atoms and then finds evedance to support his idea of atoms.

  • James Marshall

    James Marshall
    strikes gold and starts the California gold rush

  • Ernest Rutherford

    Ernest Rutherford
    discovered the positively chardged nucleus of the atom and was a physicist from New Zealand

  • Bohr

    Bohr
    Niels Bohr, a danish scientist who worked with Rutherford and suggested that electrons traveled around the nuclueas in definite paths

  • MODERN ATOMIC THEORY

    Bohr's model of the atom is important because it introduced the concept of the quantum in explaining atomic properties

  • Modern atomic theory

    Modern atomic theory
    Bohr's model of the atom is important because it introduced the concept of the quantum in explaining atomic properties