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10 Cards in this Set
- Front
- Back
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Proton |
A positively charged particle located in an atom's nucleus |
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Neutron |
A particle that has no electric charge and is located in an atom's nucleus |
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Nucleus |
The central region of an atom where most of its mass is found in protons and neutrons |
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Electron |
A negatively charged particle located outside an atom's nucleus |
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Atomic Number |
The number of protons in the nucleus of an atom |
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Atomic Mass Number |
The total number of protons and neutrons in an atom's nucleus |
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Atomic Mass |
The average mass of all the atoms of an element |
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Periodic Table |
A table of the elements, arranged by atomic number, that shows the patterns in their properties |
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Group |
A vertical column in the periodic table of the elements |
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Period |
A horizontal row in the periodic table of the elements |
