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5 Cards in this Set
- Front
- Back
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Atom
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basic unit of matter
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Nucleus
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the center of the atom which contains the protons and neutrons; in cells, the structure that contains the cell's genetic material (DNA) and controls the cell's activities
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Electron
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negatively charged particle; located outside the atomic nucleus
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Element
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substance consisting entirely of one type of atom
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Isotope
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atom of an element that has a number of neutrons different from that of other atoms of the same element
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