https://padlet.com/tybooth/de8qpwc0skyxwmp0 Made with a lightning strike of genius en-us 2020-11-29 01:59:12 UTC 2020-11-30 12:56:36 UTC hello@padlet.com tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/967691284 1804
-states that all matter is composed of atoms, indivisible and indestructible building blocks
-different elements have atoms of differing size and mass
*This was the first complete attempt to describe all matter in terms of atoms and their properties*]]> 2020-11-29 02:18:26 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/967691284 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969346870 April 30, 1897
-JJ Thomson was the first person to use the electron in their diagram
-JJ Thomson
-JJ Thomson made the theory that protons are uniform spheres of positively charged matter in which negatively charged electrons are embedded.
-His model was called the plum pudding model
-By using a cathode ray tube(CRT) in three separate experiments, Thomson was able to discover the electron.

]]> 2020-11-29 21:16:33 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969346870 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969357844 -In 1803, representatives of the United States and Napoleonic France conclude negotiations for the Louisiana Purchase, successfully doubling the size of the country.  ]]> 2020-11-29 21:25:10 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969357844 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969408692 1911
-Ernest Rutherford's model describes the atom as a tiny, dense, positively charged core called a nucleus
-All mass is believed to be concentrated around the nucleus.
-Electrons are also believed to be concentrated around the nucleus.
-His famous experiment, the golden foil experiment, was able to draw two very important conclusions: 1) most space in an atom is empty 2) all the mass in an atom is concentrated in an area, known as the nucleus]]> 2020-11-29 22:08:25 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969408692 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969674759 -The global war known as World War I began, sparking a 4 year conflict between the greatest powers on Earth up to that point.]]> 2020-11-30 01:24:45 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969674759 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969683112 1913
-Bohr’s theory states that atoms have a positively charged nucleus that is orbited by electrons that move in circles.

-These electrons move in specific, distinct orbital levels. 

-Even though this theory was proven wrong, it has had a lasting effect on the understanding of atomic structure and quantum physics. 

]]> 2020-11-30 01:29:34 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969683112 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969688330 1926

• The current model of the atom is called the Quantum Mechanical Model or the Electron Cloud Model.
•  This model is based off both the Bohr model and Rutherford model
• The electron is similar to those two, but instead states that the atomic nucleus is surrounded by probability “clouds” of electrons called orbital.

]]> 2020-11-30 01:32:26 UTC https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969688330 tybooth https://padlet.com/tybooth/de8qpwc0skyxwmp0/wish/969696715 The stock market crash of 1929

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