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15 Cards in this Set
- Front
- Back
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Atom |
smallest unit of matter |
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Atomic Mass |
the mass of an atom (containing protons, neutrons, and electrons) |
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Atomic Number |
the number of protons in an atom |
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Charge |
either positive, negative, or neutral |
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Protons |
The positive part of an atom. Located int he Nucleus Mass of 1 amu (Same as neutron) |
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Energy Levels |
the rings around the nucleus of an atom |
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Electron Cloud |
the location of electrons |
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Electrons |
the negative part of an atom |
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Mass Number |
mass of the protons and the neutrons only |
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Neutrons |
The part of an atom that does not have a charge Located in the Nucleus Mass of 1 amu (Same as proton) |
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Nucleus |
center of an atom with a positive charge and all the mass. |
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Particle |
smallest part of an atom. |
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Valence Electrons |
Electrons in the outermost energy level |
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Group |
Up and down on the periodic table. Group Number = Number of Valence Electrons Elements in the same group have similar properties. |
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Period |
Left and Right on the periodic table. Period Number = Number of Energy Levels |
