https://padlet.com/hookway_e/1hhlk2o74f1t timeline en-us 2018-10-10 18:11:16 UTC 2025-11-13 08:27:04 UTC hello@padlet.com hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291411617 Was the first to suggest the idea of an atom. He had no evidence for it.]]> 2018-10-10 18:18:24 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291411617 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291412533 Found out that atoms of the same element are exactly alike, atoms of different elements are different. Atoms can join with other atoms to make new substances.]]> 2018-10-10 18:19:54 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291412533 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291413572 Found out electrons travel around the nucleus of an atom in definite paths. Electrons can jump from one energy level to another]]> 2018-10-10 18:21:39 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291413572 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291414330 Created the Goldstein Canal Ray tube, this tube demonstrates that besides the cathode rays there is another stream that travels in the opposite direction as the electron flows.]]> 2018-10-10 18:22:49 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291414330 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291415956 Discovered that atoms can be split into smaller particles (protons and electrons)]]> 2018-10-10 18:25:30 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291415956 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291416866 Made an oil drop experiment which helped to quantify the charge of an electron. It showed the structure of an atom and atomic theory.]]> 2018-10-10 18:26:22 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291416866 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291876324 Discovered that atoms have a positive charge in the core and negative charges outside the core. Atoms are mostly made of space.]]> 2018-10-11 17:48:34 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291876324 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291878026 Used mathematical equations to describe the likelihood of finding an election in a certain position. (The quantum mechanical model of the atom)]]> 2018-10-11 17:51:10 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291878026 hookway_e https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291879341 Discovered the existence of neutrons. He found that the atomic mass of most elements is double the number of protons for one atom of that element.]]> 2018-10-11 17:53:12 UTC https://padlet.com/hookway_e/1hhlk2o74f1t/wish/291879341