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12 Cards in this Set
- Front
- Back
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Periodic law
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The law that states that the repeating chemical and physical properties of elements change periodically with the atom numbers of the elements
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Period
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in chemistry a horizontal row of elements in the periodic table; in physics the time that it takes a complete cycle or wave oscillation to occur
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Group
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A vertical column of elements in the periodic table; elements in a group share chemical properties
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Ion
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An atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge
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metal
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An element that is shiny and that conducts heat and electricity well
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Nonmetal
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An element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution
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Semiconductor
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An elements or compound that conducts electric current better than an insulator does but not as well as a conductor does
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Alkali metal
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One of the elements of group 1 of the periodic table
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Alkaline-earth metal
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One of the elements of group 2 of the periodic table
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Transition metal
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One of the metals that can use inner shell before using the outer shell to bond
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Noble gas
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One of the elements of group 18 of the periodic table; noble gases are unreactive
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Halogen
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One of the elements of group 17 of the periodic table; halogens combine with most metals to form salts
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