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8 Cards in this Set
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- Back
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periodic
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recurring at intervals of time: periodic revivals of an interest in handicrafts
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periodic law
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the law that the properties of the elements are periodic functions of their atomic numbers
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period
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a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany. a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany.
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group
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any collection or assemblage of persons or things; cluster; aggregation: a group of protesters; a remarkable group of paintings
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alkali metals
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are a series of elements comprising Group 1
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alkaline-earth metals
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are metallic elements found in the second group of the periodic table
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halogens
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Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine
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noble gases
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The six _______ are found in group 18 of the periodic table
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