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12 Cards in this Set
- Front
- Back
Periodic Law
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the law that states that the repeating chemical and physical properties of elements change periodically 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, 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 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 the elements of Group 17 of the periodic table
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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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