Contributions of Scientists

By kaylinbournes
  • 460 BCE

    Democritus

    My Name is Democritus and I believe that atoms are invisible and indestructible.
  • 460 BCE

    Democritus and Dalton

    Democritus and Dalton had pretty much the same picture for the atom, but Dalton had the 4 ideas for the Atomic Theory.

  • John Dalton

    My name is Dalton and I studied ratios when elements combine in chemical reactions.

  • JJ Thomson

    My name is Thomson and I believe that an atom is like a chocolate chip cookie.

  • Thomson

    Thomson passed an electric current through gases at low pressure and found out about electrons. He proposed protons and neutrons made up atoms.

  • Ernest Rutherford

    My name is Rutherford and I found the nucleus of an atom.

  • Rutherford

    Rutherford made a model of how gold should reflect light and found out about the nucleus

  • Niels Bohr

    My name is Bohr and I believe that electrons have an orbit and they gain or lose energy between levels.

  • Modern Quantum Mechanical Model

    There is an exact patron for electrons. It's not an exact path, there is just a cloud. If the cloud is more dense, it's easier to find an electron where as if it's less dense, it would be harder to find.