Atomic Theories Padlet by James Chase https://padlet.com/374728/ksjjxyfcsw1ew6u JD Chase en-us 2023-10-02 03:47:06 UTC 2023-10-02 04:31:55 UTC hello@padlet.com https://padlet.net/icons/png/269b.png How do I share it with you? 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727944032
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    • ]]>     2023-10-02 03:47:06 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727944032     What do I do? 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727944035 This is due next class meeting, if not completed this period!

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    Video: https://www.youtube.com/watch?v=xazQRcSCRaY&pp=ygUVdGVkIGVkIGF0b21pYyB0aGVvcnkg]]>     2023-10-02 03:47:06 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727944035     John Dalton 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727953481 Dalton showed that common substances always broke down into the same elements in the same proportions. He suspected they were combinations of atoms of different elements,each of a particular size and mass that could neither be created nor destroyed.]]> 2023-10-02 04:02:10 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727953481 JJ Thompson 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727959793 He showed atoms as uniformly, packed spheres of positive matter filled with negative charged electrons. Thompson won a Nobel prize in 1906 for his electron discovery.]]> 2023-10-02 04:13:12 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727959793 Ernest Rutherford 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727962659 While studying the effects of x-rays on gases, Rutherford decided to investigate atoms more closely by shooting small positively charged alpha particles at a sheet of gold foil. Rutherford concluded that atoms consisted largely of empty space with just a few electrons, while most of the mass was concentrated in the center, which he termed the nucleus. The alpha particles pass through the gaps, but bounce back from the dense positively charged nucleus.]]> 2023-10-02 04:18:11 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727962659 Niels Bohr 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727967464 He expanded on Rutherford’s nuclear model 
     Drawing on earlier work by Max Planck and Albert Einstein, he stipulated that electrons orbit the nucleus, at fixed energies and distances. Able to jump from one level to another, but not to exist in the space between. Bohr’s planetary model took center stage, but soon it to encountered some complications. Experiments had shown that rather than simply being discreet particles electrons simultaneously behave for like waves not being confined to a particular point in space.]]>     2023-10-02 04:26:39 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727967464     Werner Heisenberg 374728 https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727969291 He showed it was impossible to determine both the exact position in speed of electrons as they moved around an atom. The idea that electrons cannot be pinpointed, but exist within a range of possible locations gave rise to the current quantum model of the atom. A fascinating theory, with a whole new set of complexities, whose implications have yet to be fully grasp.]]> 2023-10-02 04:29:44 UTC https://padlet.com/374728/ksjjxyfcsw1ew6u/wish/2727969291