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12 Cards in this Set
- Front
- Back
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Atom |
is the smallest particle into which an element can be divided and still be the same element. |
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Democritus |
Greek phliosiper thought that you would eventally end up with a particle that could not be cut. ( atoms) |
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Aristotle |
a greek philsopher who disagreed ( did not believe in atoms) |
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John Dalten 4 part therey |
1 mader is made up of atoms 2. adoms can not be created or destroyed 3. atoms of a setain eleent can not are identical 4.atoms joined with other atoms make a new substance |
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Thomas |
Thomas found smaller particals inside the atom electrons |
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electrons |
negetive charged particles |
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Rutherford |
found out that atoms have a nucles then found out the electrons are moving around the nucleus also founf protons |
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protons |
possitive charged particles |
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nuclues |
a small dense center that has a positive charge |
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Bohr |
Bohrs therory was that the electons moverd arond the nuclus in a curicukar patteren and a serten distanse appart |
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netrons |
in the nucleses that contains un charged particles |
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electron cloud |
electrons move with in an area around the nucles |
