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The Modern Concept of the Atom
Essay specific features
Written by:
Geraldine N
Date added:
March 30, 2016
Level:
University
Grade:
A
No of pages / words:
3 / 793
Was viewed:
2827 times
Rating of current essay:
Essay content:
Thomson assumed there must be something in an atom that was positively charged that would neutralize the electrons negative charge. His proposal was a model for the atom that included a cloud of positive electricity in which the negatively charged electrons were embedded. His model is known as the Plum-Pudding Model of the atom...
displayed 300 characters
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His model is known as the Plum-Pudding Model of the atom. However, after an experiment performed by physicist Ernest Rutherford in 1909, Thomson's Plum-Pudding Model would become outdated.
Ernest Rutherford studied alpha particles or small pieces of positively charged matter. In an experiment, he fired alpha particles at a piece of gold foil, with a zinc sulfide screen behind it that would glow revealing the path of the alpha particle...
displayed 300 characters
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