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6 Cards in this Set
- Front
- Back
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atom |
the building blocks of all matter
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Subatomic
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smaller than or occurring within an atom.
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Nucleus
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the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
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Orbital Shell
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an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus.
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Valence Shell
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the outermost shell of an atom
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Proton
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positively charged
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