Whyte d

Heather MacKenzie

  • 460 BCE

    Democritus

    Democritus
    He proposed the idea that matter is made of tiny, indivisible, indestructible particles called atoms. But, his plan got rejected because he had no proof.
  • John Dalton

    John Dalton
    Dalton studied color blindness for years, he had this condition. But while studying that he studied weather. With the years of studying he created an atom. It took him years to make it but he finally did. Now in the present days that is what we remember him for, his amazing discovery of the atom!!
  • J.J. Thompson

    J.J. Thompson
    Thompson tried doing an experiment with gas discharge tubes. He noticed a movement in the tube, he called the movement cathod-rays. He also noticed they had a positive and negative and positive charge. So he created electrons.
  • Lord Ernest Rutherford

    Lord Ernest Rutherford
    Rutherford did an experiment where he took a piece of foil and saw if the particles would past straight through and most of them did. So his theory is that atoms are empty, and clear.
  • Niels Bohr

    Niels Bohr
    Bohr knew of the atom. So for years he tried to make a model and finally he succeeded. He is famous for his model of an atom.