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Periodic Table Crossword

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Across
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Group 17 on the periodic table
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An element that conducts heat and/or electricity well
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The charge associated with an atom
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A change that results in a new substance
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A horizontal row of the periodic table
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Metals groups 3-12
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A compound composed of a metal and oxygen
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The set amount of electrons expressed in a "level"in an atom
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The average mass of an atom of an element
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The elements in the 18th group that are odorless, have full energy levels (or close too full) and are very stbale
Down
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The first group of the periodic table
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A materiel that doesn't conduct heat and/or electricity very well
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A change that does not result in a new substance
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An abbreviation that describes an element
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A vertical column of the periodic table
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Elements with properties of metals and non- metals
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A metal is a substance that conducts heat and electricity, is shiny, and ductile
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Dull, brittle and poor conductors of electricity and heat
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The number of protons in an atomic nucleus
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The repeating pattern of chemical and physical properties of the elements