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8 Cards in this Set
- Front
- Back
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Element |
Matter made of only one kind of atom |
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Atomic Number |
Top number on the element |
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Isotopes |
Atoms of the same element that have different numbers of neutrons |
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Mass Number |
Number of protons plus the number of neutrons it contains |
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Atomic Mass |
Weighted average mass of the isotopes of an element |
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Metals |
Generally have a shiny or metallic luster and are good conductors of heat and electricity |
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Nonmetals |
Elements that are usually dull in apprearence |
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Metalliods |
Elements that have characteristics of metals and nonmetals |
