The History of Atomic Theory by Roman Tkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5 en-us 2021-10-27 21:13:10 UTC 2025-12-09 17:01:32 UTC hello@padlet.com 1. 2500 years ago Leucippus and Democritus romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849478017 Created a hypothesis, 2500 years ago, that stated that matter is made of small particles and those tiny particles were called Atomos]]> 2021-10-27 21:18:01 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849478017 2. Antoine Lavoisier romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849486670 Proposed the law of conservation of mass]]> 2021-10-27 21:24:09 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849486670 3. Eugine Goldstaine romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849489871 In 1886 discovered that atoms have positive and negative charge]]> 2021-10-27 21:26:23 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849489871 4. J.J. Thompson romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849493939 Discovered electrons and stated that they are neither waves nor rays, but particles.
Created a Plum pudding model]]> 2021-10-27 21:29:24 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849493939 5. Ernest Rutherford romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849498821 Discovered nucleus, and that most of the atom is made up of empty space.
Discovered positively charged ions(protons).]]> 2021-10-27 21:33:09 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849498821 6. Niels Bohr romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849503749 Mathematically explained the position of electrons in atom (planetary model).]]> 2021-10-27 21:36:52 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849503749 7. Werner Heisenberg romanytkachuk https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849507963 Discovered that it is impossible to know the correct momentum and position of the atom. Created quantum theory, that states that there are regions (orbitals) where electron is more likely to be but is not 100% there]]> 2021-10-27 21:40:00 UTC https://padlet.com/romanytkachuk/3gknds70jdxhqem5/wish/1849507963