https://padlet.com/sgutierrez006/apn6crnix2vy For Mrs.Bunyard's Science Class. en-us 2017-04-21 17:27:57 UTC 2017-05-19 16:14:30 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Diskette.png sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/167549766 Our current model of the atom shows a dense nucleus, containing both protons and neutrons, surrounded by a cloud of electrons. ]]> 2017-04-21 17:31:41 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/167549766 sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168694908 Chadwick discovers neutrons by bombarding beryllium atoms with a beam of alpha particles, the radiation that was produced concluded that there was a third type of particle in an atom.]]> 2017-04-27 16:50:20 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168694908 sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168695474 The Bohr atomic model is created. This model shows a dense nucleus, containing only protons, surrounded by electrons in planet-like orbits.]]> 2017-04-27 16:52:18 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168695474 sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168696024 Rutherford conducts the "gold foil experiment" and proves the existence of a small, dense nucleus at the center of the atom. He also determines that atoms are mostly empty space.]]> 2017-04-27 16:54:30 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168696024 sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168696791 Thompson discovers electrons, and creates a new model of the atom known as the "Plum Pudding" model.]]> 2017-04-27 16:57:05 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168696791 sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168697355 Dalton makes his atomic theory, stating that all atoms are invisible, indestructible, all atoms in a substance are identical, compounds are combinations of two or more different kinds of atoms, and that chemical reactions change atoms. ]]> 2017-04-27 16:58:59 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168697355 sgutierrez006 https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168698014 Democritus invents Atomic Theory, he thought that atoms were small, "uncuttable" , hard particles. ]]> 2017-04-27 17:01:06 UTC https://padlet.com/sgutierrez006/apn6crnix2vy/wish/168698014