Construct a timeline of the development of the atomic model. (SHE)

• John Dalton:
  • Atomic theory of matter
    • 1. Elements are composed of extremely small, indivisible particles called atoms.
    • 2. All Atoms of given element are identical having same size, mass and chemical properties. Atoms of different elements have different size, mass and chemical properties.
    • 3. Atoms are not created or destroyed during chemical reaction.
    • 4. A chemical reaction involves only separation, combination. Or rearrangement of atoms.
    • 5. Compounds are formed when atoms of more than one element combine in a specific ratio.
  • TLDR John Dalton proposed everything is made up of extremely small particles called atoms.
  • why bad:
• JJ Thomson - discovered the electron