Atomic Theory

Timeline created by DAM04
In History
  • Period:
    -460 BCE
    to
    -370 BCE

    Democritus

    He propose matter was not infinitely divisible, he said atoms could not be created or destroyed.He's ideas were not well accepted by other philosophers.
  • Period:
    -384 BCE
    to
    -322 BCE

    Aristotle

    He thought empty space exist. He thought matter is made of earth, fire, air and water
  • Period: to

    Lavoisier

    He was born in France, he work as a scientist, he discovered that mass is conserved in a chemical reaction. He was considered the first scientist and he stablished that matter isn't destruct only change the form.
  • Period: to

    Dalton

    Born on England and work as a teacher in a quicker wording school in Kendal. Dalton took ideas from Democritus and Aristotle and made the first model of atom. It happened the independence of Mexico.
  • Period: to

    Thompson

    Realize the experiment of cathode ray tube and discover that the electrons have negative charges. He was born on England and work as a professor of physics in the social royal society.
  • Period: to

    Plank

    He was born in Germany and he was a scientist. He discovered that energy is emitted from a black body in discrete amounts called quanta.
  • Period: to

    Rutherford

    He was born in New Zealand and was a physic a chemist. He discovered that atom has a nucleus and discover that the nucleus its the only solid part of an atom.He also discover the proton. There was a revolution in Mexico.
  • Period: to

    Bohr

    He was born in Denmark and work as a physic. His model of atom was the first that incorporated quantum theory. World War develop.
  • Period: to

    James Chadwick

    He was born in England and he was a professor on the Cambridge University. He prove the existence of neutrons he help for the creation of the atomic bomb.
  • Period: to

    Heisenberg

    Was born in Germany, he said that atom can't be in a determined speed. World War 2 begins.