atoms1
| Description: | atom definitions |
| Category: | Chemistry |
| Created by: | machillea on 2005-10-03 |
| Question | Answer |
| proton | a positive particle in the nucleus of the atom |
| neutron | a neutral particle in the nucleus of the atom |
| electron | a negative particle which moves in shells around the nucleus |
| atomic number | the number of protons in an atom |
| mass number | the sum of protons and neutrons in an atom |
| isotopes | atoms of the same element with the same number of protons and electrons but different numbers of neutrons |
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