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15 Cards in this Set
- Front
- Back
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What is an electron |
Negatively charged particle in an atom |
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What's a neutron |
A neutral particle in the atoms nucleus |
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What is a proton |
Positively charged particle in the atoms nucleus |
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What's a valence |
The electrons in the outer orbit |
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What's Democritus known for |
All matter is made up of particles with small spaces between them |
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Is JJ Thompson known for |
Electrons are spread among atoms |
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Is JJ Thompson known for |
Electrons are spread among atoms |
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What is Aristotle known for |
All matter is made up of 4 elements (earth, fire , water , air) |
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Is JJ Thompson known for |
Electrons are spread among atoms |
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What is Aristotle known for |
All matter is made up of 4 elements (earth, fire , water , air) |
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Ernest Rutherford |
Positively charged particles were shot into gold foil but some would go through it but not all of them went through some deflected at small angles |
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What is John Dalton known for |
Revived Democritus's theory on indivisible theory , all matter has tiny atoms |
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What is James Chadwick known for |
Particles that could penetrate and disintegrate atoms with extraordinary power unlike positively charged protons it had zero charge |
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What is Niels Bohr known for |
Electrons orbit the nucleus of the atom |
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How are atoms made into negative or positive ion |
When the electrons don't evenly distribute around the nucleus |
