https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68 en-us 2023-02-03 02:27:18 UTC 2023-02-03 03:34:10 UTC hello@padlet.com ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467013297 Democritus introduced idea of matter as basic building block matter.]]> 2023-02-03 02:31:09 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467013297 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467014928 Aristotle disagreed with atomic theory, believed everything was made of 4 elements: earth, air, water, fire.]]> 2023-02-03 02:32:58 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467014928 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467016371 proposed that every single atom of an element is the same as every other atom of that element.]]> 2023-02-03 02:34:31 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467016371 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467032406 theory that matter is composed of particles called atoms.]]> 2023-02-03 02:53:21 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467032406 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467037752 a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface.]]> 2023-02-03 02:59:42 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467037752 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467040232 Discovered by searching cathode rays for carrier of electrical properties in matter.]]> 2023-02-03 03:02:41 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467040232 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467047890 Discovered the electron.]]> 2023-02-03 03:12:46 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467047890 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467050259 Model of atom known as Plum Pudding Model.]]> 2023-02-03 03:15:58 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467050259 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467051772 Discovered nuclear structure of atom, discovered alpha and beta rays, proposed laws of radioactive activity.]]> 2023-02-03 03:18:02 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467051772 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467052998 discovered by Ernest Rutherford.]]> 2023-02-03 03:19:49 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467052998 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467053947  proposed that the negatively charged electrons surround the nucleus of an atom.]]> 2023-02-03 03:21:15 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467053947 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467055186 A beam of alpha particles was aimed at a piece of gold foil. Most alpha particles passed through the foil, but a few were scattered backward. This showed that most of the atom is empty space surrounding a tiny nucleus.]]> 2023-02-03 03:23:08 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467055186 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467056166 Discovered by Ernest Rutherford in 1917.]]> 2023-02-03 03:24:38 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467056166 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467057126 Proved the existence of neutrons.]]> 2023-02-03 03:26:08 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467057126 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467058338 Discovered by James Chadwick.]]> 2023-02-03 03:27:48 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467058338 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467059388 Known for his work on the structure of atoms. ]]> 2023-02-03 03:29:21 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467059388 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467060904  In this model, the electrons travel around the nucleus of an atom in distinct circular orbits]]> 2023-02-03 03:31:37 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467060904 ewers_joseph https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467062282  specifies the probability of finding an electron in the three-dimensional space around the nucleus.]]> 2023-02-03 03:33:47 UTC https://padlet.com/ewers_joseph/5r6oqyow2fj5ii68/wish/2467062282