Atomic Timeline

Timeline created by Samuel Won
  • 430 BCE

    Democritus

    Democritus
    Atoms have their own size and shape. Atoms are "uncuttable", they are the smallest particles of matter.
  • John Dalton

    John Dalton
    Each element has its own unique property. All matter are made up of tiny particles called atoms. All atoms of a given element are alike, but are different from the atoms of any other elements. Compounds are formed when atoms of different element combine in fixed proportions. A chemical reaction involves the rearrangement of atoms, not a change in atoms themselves. Atoms can't be created nor destroyed, only changed.
  • Period:
    430
    to

    Atomic Timeline