History of the Atom by Sydney Becks https://padlet.com/becks_sydney/8d0o7e02l07lgi8c en-us 2023-01-30 16:39:00 UTC 2026-01-25 08:30:25 UTC hello@padlet.com very early philosophers becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463390224 matter made of earth, water, fire, air]]> 2023-01-31 17:25:50 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463390224 Democritus (460-370 BC) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463392360 matter made of tiny particles called atomas]]> 2023-01-31 17:27:04 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463392360 Aristotle becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463393334 denied existence of atoms]]> 2023-01-31 17:27:45 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463393334 John Dalton (1766- 1844) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463394464 atomic theory]]> 2023-01-31 17:28:25 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463394464 Cathode Ray becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463395083 2023-01-31 17:28:49 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463395083 discovery of electron (1897) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463395674 2023-01-31 17:29:09 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463395674 Tomson (1897) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463396767 Plum Pudding Model]]> 2023-01-31 17:29:50 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463396767 Rutherford (1871- 1937) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463399058 discovers nucleus and protons using Gold Foil Experiment, model of the atom]]> 2023-01-31 17:31:19 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463399058 James Chadwick becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463400052 discovered neutrons]]> 2023-01-31 17:32:01 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463400052 Niels Bohr (1885 - 1962) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463402572 created Bohr model of the atom ]]> 2023-01-31 17:33:43 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463402572 Quantum Cloud Model (1930) becks_sydney https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463403683 2023-01-31 17:34:28 UTC https://padlet.com/becks_sydney/8d0o7e02l07lgi8c/wish/2463403683