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Atomic Theory Graphic Organizer

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Chris Braucher

on 6 September 2015

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Transcript of Atomic Theory Graphic Organizer

Atomic Theory Graphic Organizer
Modern Atomic Model
"Electron Cloud Model"
Thomson's Atomic Model
"Evidence for Subatomic Particles"
Rutherford's Atomic Model
"Evidence for a nucleus"
Bohr's Atomic Model
Dalton's Atomic Model
"Evidence for Atoms"
Brief Description of the theory
Everything is composed of Atoms
All atoms of an element are identical
Atoms of different elements differ in size and mas
Compounds are produced through different combinations of elements

Brief description of theory
Rutherford's Atomic Model included a small, dense, positively charged nucleus that was surrounded by electrons orbiting the nucleus like planets around the sun.
Ernest Rutherford
Born in 1871 in New Zealand

"Father of Nuclear
Billiard Ball Model
John Dalton
School teacher at the age of 14
Interested in Meteorology
He was a chemist
How it relates to modern atomic model.

: all matter is made of atoms

: The atom is more complex then just being a solid sphere.
"Plum Pudding model"
J.J. Thomson
He was a physicist and a scientist.
Brief description of theory
Different: It did not have:
- nucleus
-energy levels
-electron cloud
Planetary Model
Rutherford's model was similar to the Modern Atomic model because it included a positively charged nucleus and a lot of space between the nucleus and the surrounding electrons. The main difference is the absence of the electron cloud.
"Evidence from Electron Energy Levels"
Electron Stair Model
Brief description of theory
Bohr's Atomic Model included "quantized" energy levels for the electrons to occupy. Electrons can jump up an energy level if the atom absorbs energy. The electrons release energy in the form a distinct color of light, when the electrons jump back down a level.
Niels Bohr
Born in 1862 in Denmark
Worked on the "Manhattan Project"
Bohr's Atomic Model was very similar to the Modern atomic level. The main difference is the way the electrons are represented. Bohr's model displays the electrons orbiting the nucleus and the modern atomic model using "electron clouds' to represent were electrons are most likely to be found.
Bohr's Model is important because this model demonstrated the energy levels of the electrons and how electrons can move between these levels. It is still used today to represent electron configuration.
The importance of this model
Thomson's "Plum pudding" model was
important because it provide the first evidence
for subatomic particles, mainly the electron.
Rutherford's atomic model was important because his gold foil experiment provided proof of a positively charged nucleus.
Dalton's used evidence from previous experiments and his own experiments to support the existence of "atomos" or atoms.

Atoms are made up of smaller particles.
Negative charges that Thomson called "corpuscles" (electrons) are suspended in a positive substance.
Experiments with a cathode ray tube led to the discovery of the negatively charged electron.

Born in 1856 in England
Compare to the Modern Atomic Model
Similar: Included electrons
Full transcript