Term
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Definition
Smallest unit of an element
From the Greek “atomos” meaning “indivisible” |
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Term
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Definition
| Positively charged subatomic particle located inside the nucleus of the atom |
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Term
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Definition
Subatomic particle with no charge located inside the nucleus of the atom
No charge is also called neutral |
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Term
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Definition
| Negatively charged subatomic particle located outside the nucleus of the atom |
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Term
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Definition
| Number of protons in the atom |
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Term
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Definition
Protons plus neutrons
DIFFERENT from atomic mass |
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Term
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Definition
| Atoms of the same element that have different numbers of neutrons |
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Term
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Definition
How much an atom weighs
DIFFERENT from mass number |
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