Chp.1.1-UnitD
| Description: | Atomic Structure and the Periodic Table |
| Category: | Chemistry |
| Created by: | swimstar on 2008-11-07 |
| Question | Answer |
| proton | a positively charged particle |
| neutron | an uncharged particle |
| nucleus | the combination of protons and neutrons at the center of an atom. has a positive charge because of protons |
| electrons | negatively charged particles that move around outside the nucleus |
| atomic number | the number of protons in the nucleus of an atom |
| atomic mass number | the total number of protons and neutrons in an atom's nucleus |
| isotope | an atom of one element that has a different number of neutrons than another atom of the same element |
| ion | an atom or group of atoms that has a positive or negative electric charge |
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