https://padlet.com/derekm_kunz/jq4egjaysn0v By: Caleb Koen and Derek Kunz en-us 2018-09-05 15:59:38 UTC 2023-01-22 12:50:33 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png derekm_kunz https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278205122 2018-09-05 21:22:08 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278205122 calebp_koen https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278206724 The “Father of the Atomic Theory”. Dalton agreed with Democritus that all matter was made of atoms, which he also agreed that they were indestructable. He also stated that atoms have the same mass and chemical properties, also that all atoms of different elements are different. And lastly he stated that atoms in a chemical reaction combine in definite whole number ration to make isotopes.]]> 2018-09-05 21:30:26 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278206724 derekm_kunz https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278208038 It all started with Democritus and his proposal that all matter, including time and space, was made of small units called atoms. This means that if all matter is made of atoms then it is indivisible. Before his idea he disagreed with Aristotle‘s idea that everything is made of either Earth, Wind, Fire, and Water.]]> 2018-09-05 21:38:17 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278208038 calebp_koen https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278211325 Ruth made a pretty important discovery, he discovered the nucleus by shooting positive alpha particles at gold foil, thus creating the “Gold Foil Experement.” When he shot the particles into the foil and most went through but some reflected back which caused him to discover the nucleus and that its in the center of the atom. Also found that the atom is mostly empty space and that electrons surround the nucleus. ]]> 2018-09-05 21:55:58 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278211325 derekm_kunz https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278214517 Thompson identified the electron. He experimented by testing and studying the nature of electric discharge in a high vacuum cathode- ray tube. He said electrons were negative surrounded by a bunch of positive stuff. JJ called his model the plum pudding model(chocolate chip cook)]]> 2018-09-05 22:18:30 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278214517 derekm_kunz https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278215102 Milikan used an oil drop experiment to determine the charge of a single electron. He discovered an electron has a charge of -1, and its mass is .00054 -amu.
-proton 1 amu
-neutron 1 amu]]> 2018-09-05 22:22:35 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278215102 calebp_koen https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278215206 Chad found the neutron in the nucleus and that it has NO charge. THis solved the missing mass of the atom problem because the electron helps balance out protons in the nucleus.]]> 2018-09-05 22:23:24 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278215206 calebp_koen https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278215630 2018-09-05 22:26:51 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278215630 derekm_kunz https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278216189 2018-09-05 22:30:49 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278216189 calebp_koen https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278216985 2018-09-05 22:36:47 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278216985 calebp_koen https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278217510 2018-09-05 22:40:33 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278217510 derekm_kunz https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278217815 2018-09-05 22:43:27 UTC https://padlet.com/derekm_kunz/jq4egjaysn0v/wish/278217815