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15 Cards in this Set
- Front
- Back
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Name 1 of the 3 categories that elements can be classified into.
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metals
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Name 1 of the 3 categories that elements can be classified into.
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non-metals
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Name 1 of the 3 categories that elements can be classified into.
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metalloids
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Which side of the periodic table are metals located?
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left
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Are metals good or poor conductors of heat and electricity?
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good
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Which side of the periodic table are non-metals located?
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right
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Are non-metals good or poor conductors of heat and electricity?
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poor
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Which class of elements has properties that are in between those of metals and non-metals?
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metalloids
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Across a period from left to right, elements become ______ in their properties.
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more non-metallic and less metallic
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A ____ electron is an electron that is the highest occupied energy level of an atom.
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valence
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Why do elements in the same group have similar properties?
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because they have the same number of valence electrons
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Elements in group 1 are called ____.
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alkali metals
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Elements in group 2 are called ____.
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alkaline earth metals
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Elements in group 17 (7A) are called ____.
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halogens
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Elements in group 18 (8A) are called ____.
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noble gases
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