https://padlet.com/kyjk2011/atomic_theory Jordyn and Kacie en-us 2019-02-05 17:09:02 UTC 2019-02-05 18:27:13 UTC hello@padlet.com 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894586 - 1913 proposed theory
- energy is transferred in defined quantities
-  electrons move around nucleus in orbits 
- when electrons jump from one orbital to a lower one, a photon is released]]> 2019-02-05 17:12:08 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894586 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894658 -1932: discovered and proved the existence of 
the neutron through bombarding beryllium 
atoms with alpha particles]]> 2019-02-05 17:12:16 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894658 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894707 -1898: discovery of two new elements (radium and polonium). it took four years to isolated radium chloride from several tons of raw ore.
-1911 won 2nd Nobel Prize for isolating pure radium]]> 2019-02-05 17:12:21 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894707 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894741 - 1803 Dalton's Law of Partial Pressures
- created first chart of atomic weights (1803)
- determined that atoms cannot be created or destroyed, elements are made of atoms, atoms of a particular element are identical, atoms of different elements form whole-number ratios in chemical compounds, and atoms connect or separate in reactions




]]> 2019-02-05 17:12:24 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894741 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894799 - 492BC: discovered the first atom theory. Everything is made of tiny things that can't be destroyed, but can be moved or changed. Also believed atoms were all invisible and exactly alike. ]]> 2019-02-05 17:12:30 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894799 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894859 -1911: overturned Thomson's model with gold foil experiment which demonstrated that atoms have tiny and heavy nucleus. Thus, proposed a new model known as nuclear atom and Rutherford Atomic model: described positively charged core (nucleus) where all mass is concentrated with electrons revolving around at a distance.
-1919: coined the term "proton" and theorized about the existence of neutrons ]]> 2019-02-05 17:12:35 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894859 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327894894 - 1897 discovered the electron with a cathode ray tube (cathode rays are negatively charged)
- "plum pudding" model in which the electrons are the negatively charged raisins and the dough represented  positive cloud ]]> 2019-02-05 17:12:39 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327894894 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327931046 2019-02-05 18:08:38 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327931046 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327932006 2019-02-05 18:10:01 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327932006 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327932536 2019-02-05 18:10:54 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327932536 kyjk2011 https://padlet.com/kyjk2011/atomic_theory/wish/327933110 2019-02-05 18:11:49 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327933110 kyjk2011 https://padlet.com/kyjk2011/atomic_theory/wish/327933509 2019-02-05 18:12:28 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327933509 355437 https://padlet.com/kyjk2011/atomic_theory/wish/327938137 AP Chem
Pd 6/7
2/5/19]]> 2019-02-05 18:20:03 UTC https://padlet.com/kyjk2011/atomic_theory/wish/327938137