https://padlet.com/104318es/9smd14m4dhth3sjm Made with wonder en-us 2021-03-31 00:41:45 UTC 2021-03-31 01:41:43 UTC hello@padlet.com 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370193890 A greek philosopher that the universe was made of tiny "uncuttable" particle ]]> 2021-03-31 01:16:25 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370193890 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370198644 Hypothesized that the atom was a tiny hard sphere. Created the atomic theory and believed that atoms of a given element are identical. ]]> 2021-03-31 01:18:16 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370198644 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370209726 Determined that the properties of elements are periodic (or in trends) and created the first periodic table ]]> 2021-03-31 01:22:41 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370209726 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370215508 discovered the electron, used the cathode ray tube in his discovery. Also created the "plum pudding) model of the atom ]]> 2021-03-31 01:24:55 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370215508 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370222738 did the gold foil experiment, discovered that the atom is mostly empty space and that protons had a positive charge. ]]> 2021-03-31 01:27:49 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370222738 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370230930 Created a model of the atom with electrons moving around the nucleus in fixed orbits and worked with the quantum theory ]]> 2021-03-31 01:31:00 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370230930 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370238502 created the uncertainty principle( a particle's position, energy and time can never be precisely known) ]]> 2021-03-31 01:34:06 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370238502 104318es https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370244501 discovered the neutron, and found the missing mass of atoms nucleus ]]> 2021-03-31 01:36:32 UTC https://padlet.com/104318es/9smd14m4dhth3sjm/wish/1370244501