Science 3rd Trimester

Science 3rd Trimester

1. Atoms

2. Atoms Timeline

   • John Dalton
     • Every atom of an element are identical and that every atom of different atoms combined form the compounds. He also believed that all matter is made of atoms.
     • Pool Ball
   • J. J. Thomson
     • Plum Pudding
     • Cathode Ray Tube
     • Thru experiments he found out that in an atom there was a negative charge. He believed that an atom was a positive ball with negative point in it.
   • Ernest Rutherford
     • Planetary model and Gold Foil experiment
     • Rutherford discovered that atoms have a nucleus with positive charges. After, he discovered that this nucleus is divided in multiple positive parts, in which he named them protons.