https://padlet.com/203737/dhoug8u96nne en-us 2016-11-10 19:02:11 UTC 2025-09-26 11:18:52 UTC hello@padlet.com 203737 https://padlet.com/203737/dhoug8u96nne/wish/136856559 Based upon the predictions made by Democritus, Dalton discovered that all elements are composed of atoms; he also found that one element is made up of the same type of atom. He is also known as the Father of the Atomic Theory.  NOTES
John Dalton

]]> 2016-11-10 19:08:53 UTC https://padlet.com/203737/dhoug8u96nne/wish/136856559 211690 https://padlet.com/203737/dhoug8u96nne/wish/136856633 Greek philosopher Democritus creates the idea that everything is made up of "Atomos" (atoms) he believed that the atoms had different shapes and sizes for different objects.     NOTES

Democritus]]> 2016-11-10 19:09:02 UTC https://padlet.com/203737/dhoug8u96nne/wish/136856633 211690 https://padlet.com/203737/dhoug8u96nne/wish/136858223 JJ Thomson discovers that there are negative particles in an atom. He proposed that the electrons were inside of a ball like atom and called this the "Plum Pudding Theory".     NOTES
JJ Thomson]]> 2016-11-10 19:12:20 UTC https://padlet.com/203737/dhoug8u96nne/wish/136858223 211690 https://padlet.com/203737/dhoug8u96nne/wish/136861020 Bohr proposed that idea that the atom had levels of electrons that were all in an orbit around the nucleus.       NOTES
Bohr]]> 2016-11-10 19:18:25 UTC https://padlet.com/203737/dhoug8u96nne/wish/136861020 203737 https://padlet.com/203737/dhoug8u96nne/wish/136862171 Rutherford performed an experiment during which he fired a gun that released alpha particles at a piece of gold foil; in doing this, he found that the alpha particles would bounce back on occasion, thus discovering a positively charged nucleus. NOTES / https://goo.gl/Vc3Tcm
Ernest Rutherford]]> 2016-11-10 19:20:58 UTC https://padlet.com/203737/dhoug8u96nne/wish/136862171 203737 https://padlet.com/203737/dhoug8u96nne/wish/136864790 The Quantum model, also called the electron cloud combined the ideas of multiple scientists and exemplified how electrons with the lowest amount of energy are closest to the nucleus, and those with the highest amount are further away. This model also shows how electrons are on different energy levels, though the exact location of an electron cannot be definitively found. NOTES / https://goo.gl/IDGjAx
The Wave Model]]> 2016-11-10 19:27:09 UTC https://padlet.com/203737/dhoug8u96nne/wish/136864790 203737 https://padlet.com/203737/dhoug8u96nne/wish/137076862 ERWIN SCHRODINGER: He created the most updated model of the atom, the Quantum Mechanical Model. Schrodinger was born in Vienna, Austria and was awarded the Nobel Prize for his discoveries.
JAMES CHADWICK: Chadwick discovered the existence of the nucleus in the center of the atom. He was born in the United Kingdom and worked at Liverpool University.
MARIE AND PIERRE CURIE: The pair discovered two important elements, Plutonium(Pu) and Radium(Ra), both of which are radioactive. Marie Curie was Polish but later moved to France to work in science. QUIZLET/https://goo.gl/dHTW3e / https://goo.gl/74IZoF / https://goo.gl/kgGa0

]]> 2016-11-11 18:54:44 UTC https://padlet.com/203737/dhoug8u96nne/wish/137076862 211690 https://padlet.com/203737/dhoug8u96nne/wish/137077589 2016-11-11 18:57:30 UTC https://padlet.com/203737/dhoug8u96nne/wish/137077589 203737 https://padlet.com/203737/dhoug8u96nne/wish/137079131 Scrodinger]]> 2016-11-11 19:04:16 UTC https://padlet.com/203737/dhoug8u96nne/wish/137079131 203737 https://padlet.com/203737/dhoug8u96nne/wish/137079666 2016-11-11 19:06:56 UTC https://padlet.com/203737/dhoug8u96nne/wish/137079666 203737 https://padlet.com/203737/dhoug8u96nne/wish/137079931 Marie and Pierre Curie]]> 2016-11-11 19:08:17 UTC https://padlet.com/203737/dhoug8u96nne/wish/137079931