https://padlet.com/allysha17/mz78op3w56fbjy5c Allysha 89C en-us 2022-10-14 03:48:26 UTC 2022-10-24 06:10:39 UTC hello@padlet.com https://padlet.net/icons/png/1f631.png allysha17 https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339794733 Democritus a philospher theorized that everything in the world were made out of tiny particleds surrounded by empty space that vary in different size and shape depending on substance it composes.]]> 2022-10-14 03:57:33 UTC https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339794733 allysha17 https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339797190 Jhon Dalton tested Democritus theory. He found that common substances always broke down into the same elements and proportions, he concluded that the various compounds were combinations of atoms of different elements which neither can be created nor destroyed.]]> 2022-10-14 04:00:40 UTC https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339797190 allysha17 https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339798735 J.J Thompson discovered the electron. He founded that atoms were spheres of positive matter, filled with negatively charge electrons.]]> 2022-10-14 04:02:51 UTC https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339798735 allysha17 https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339804676 Ernest Rutherford a student of J.J Thompson, experimented by shooting small positively charged at a sheet of gold foil. Rutherford found that atoms consisted mainly of empty space with just a few electrons, while most of the mass was concentrated in the center which he called the nucleus, the alpha particle passed through the gaps but bounced back from the positively charged nucleus.]]> 2022-10-14 04:10:11 UTC https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339804676 allysha17 https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339825707 Niels Bhor, another of Thompson's students, theorized that
electrons orbit the nucleus at fixed energy and distances. able to jump from one level to another but not to exist in the space between. experiments showed electrons simultaneously like waves, not being confined to a particular point in space.]]> 2022-10-14 04:34:56 UTC https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339825707 allysha17 https://padlet.com/allysha17/mz78op3w56fbjy5c/wish/2339827787 Werner Heisenberg theorized that its impossible to determine the exact position and speed of electron as they moved around an atom.

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