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Atoms
Beginning of paper
How many times can one cut a piece of gold in half? A Greek
philosopher named Democritus was the first in a long line of scientists and
mathematicians to try to answer this very difficult question. Around 450
BC, Democritus stated that all mater was composed of particles that he
called atomos (where the English word atom comes from) and that th ....
Middle of paper
....ay was made up of particles with a negative charge. He
named these particles electrons. This discovery also showed that atoms had
a substructure. Thomson made a model showing his idea for the atom. His
model, called the raisin dough model had positive and negative particles
imbedded into a positive atom.
Other particles in the atoms nucleus wer.... |
| Word count: 520 |
Page count: 2 |
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