From the following links you should be able to:
1. understand the experimental design and conclusions used in the development of modern atomic theory
a. Dalton’s Postulates
b. Thomson’s discovery of electron properties
c. Rutherford’s nuclear atom and gold foil experiment
d. Bohr’s nuclear atom
1. understand the experimental design and conclusions used in the development of modern atomic theory
a. Dalton’s Postulates
b. Thomson’s discovery of electron properties
c. Rutherford’s nuclear atom and gold foil experiment
d. Bohr’s nuclear atom
Dalton
The man came up with 4 postulates that were "no more than stupid hallucinations" What were they? |
ThomsonHis cathode ray experiment was the first proof Dalton was wrong. He discovered the electron using the setup in the picture. Zoom in and take notes off the picture.
Look at a bigger pic here. |
RutherfordHis gold foil experiment added to our knowledge of the atom. Examine the photo closer.
Important conclusions: 1. atoms have a dense, positive core 2. atoms are mostly empty space |
BohrThe most commonly used model. Shows that electrons revolve around the nucleus in SPECIFIC ENERGY LEVELS.
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