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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 atomic numbers of the elements.
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Period
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A horizontal row of elements in the periodic table.
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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, rdical, 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.
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Semiconductor
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An element 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 the 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.
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Halogen
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One of teh elements of Group 17 of the periodic table.
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