https://padlet.com/s9104230/ffb4hlemwdykmuky en-us 2021-08-24 19:02:48 UTC 2021-08-25 18:07:26 UTC hello@padlet.com https://padlet.net/icons/png/269b.png s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694256217 Democritus believed the universe was made of empty space and tiny bits of “stuff” 
-This “stuff” was so small that they could no longer be divided into smaller pieces.
-These tiny pieces he called atoms.

]]> 2021-08-24 19:04:50 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694256217 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694262397 He believed that matter was made up of atoms too small to be seen by the naked eye. He also believed that each element was made up of one type of element.
His theory was called the "Atomic Theory of Matter." His model was called Billiard Ball Model."

]]> 2021-08-24 19:09:12 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694262397 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694267877 He discovered the negatively charged particles called electrons. He came up with the "Plum Pudding Model."]]> 2021-08-24 19:12:57 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694267877 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694633415 In 1913 Bohr came up with the "Bohr Model" consisting of a small, dense nucleus surrounded by orbiting electrons. (Also called the Solar System Model)]]> 2021-08-25 00:20:57 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694633415 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694642529 Mendeleev found that, when all the known chemical elements were arranged in order of increasing atomic weight.]]> 2021-08-25 00:25:08 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694642529 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694653202 Chadwick proved the existence of neurons.]]> 2021-08-25 00:29:43 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694653202 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694657848 Rutherford discovered the nucleus in 1911.]]> 2021-08-25 00:31:26 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694657848 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694672523 Millikan succeeded in determining the magnitude of the electron's charge.]]> 2021-08-25 00:37:16 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694672523 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694686048 The Curies conducted experiment on uranium and concluded that the rays stayed the same no matter the condition of the actual uranium. She then theorized that this was because of the atom's structure.]]> 2021-08-25 00:42:08 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694686048 s9104230 https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694692418 The Electron Cloud Model shows the theory that there is a 'cloud' with negatively charged electrons.]]> 2021-08-25 00:44:28 UTC https://padlet.com/s9104230/ffb4hlemwdykmuky/wish/1694692418