https://padlet.com/23vivara/uv6dfadwg89y2lok Made with facts en-us 2022-04-13 15:36:50 UTC 2025-05-27 17:51:16 UTC hello@padlet.com https://padlet.net/icons/png/1f9fb.png 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142609763 Democritus was an ancient Greek philosopher who discovered the atom or as he named it, the "atomos". ]]> 2022-04-13 15:46:50 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142609763 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142620645 John Dalton discovered the law of multiple proportions. He held an experiment and noted carbon and oxygen form two different compounds with different amounts of carbon and oxygen.]]> 2022-04-13 15:54:23 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142620645 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142628381 J.J. Jonah Thomson discovered atoms have negative particles( electrons). Using a cathode raytube for his experiment, Thompson found electrons charge to mass ratio: 1.76x10 C/g]]> 2022-04-13 16:00:07 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142628381 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142635076 Ernest Rutherford found out that atoms orbit the nucleus. That same year Neils Bohr added on to Rutherford's theory saying electrons orbit the nucleus.]]> 2022-04-13 16:05:13 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142635076 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142649544 Erwin Schrodinger discovered the wave mechanical model saying that electrons act like particles and waves ]]> 2022-04-13 16:16:15 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142649544 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142650355 Werner Heisenberg discovered the uncertainty principle. The principle explains that we can't know the speed and position of an electron ]]> 2022-04-13 16:16:53 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142650355 23vivara https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142658086 James Chadwick discovered neutrons. During an experiment Chadwick bombarded beryllium atoms with alpha particles and discovered atoms with no charge. ]]> 2022-04-13 16:21:50 UTC https://padlet.com/23vivara/uv6dfadwg89y2lok/wish/2142658086