https://padlet.com/stackhousemegans/xqngej606pbv Made with joy en-us 2018-10-08 18:25:47 UTC 2026-02-20 01:35:29 UTC hello@padlet.com stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290440474 When: 400 BCE
Where: Greece
Theory: Atoms are the basic building blocks of matter]]> 2018-10-08 18:27:13 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290440474 stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290440893 When: 1803
Where: England
Theory: All matter is made up of atoms, atoms are invisible/indestructible compounds are formed by a combination of 2 or more atoms]]> 2018-10-08 18:28:15 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290440893 stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290441657 When: 1869
Where: Russia
Theory: arranging the 63 elements based on atomic mass into a periodic table

]]> 2018-10-08 18:30:01 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290441657 stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290442530 When: 1897
Where: England
Theory: Discovered the electron, Cathode rays are negatively charged. That there is a positive and a negative charge]]> 2018-10-08 18:31:23 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290442530 stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290443282 When: 1911
Where: New Zealand
Theory: Atoms have a small charges nucleus surrounded by largely empty space, and are circled by tiny electrons]]> 2018-10-08 18:33:15 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290443282 stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290443869 When: 1913
Where: Denmark
Theory: Electrons travel in separate orbits around the nucleus and the number of them determined the properties]]> 2018-10-08 18:34:44 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290443869 stackhousemegans https://padlet.com/stackhousemegans/xqngej606pbv/wish/290444538 When: 1926
Where: Austria
Theory: used a mathematical equation to describe the likelihood of finding an electron in a certain postion]]> 2018-10-08 18:36:01 UTC https://padlet.com/stackhousemegans/xqngej606pbv/wish/290444538