chp 12 vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| periodic | describes something that occurs or repeats at regular intervals
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| periodic law | the law that states that the repeating chemical and the physical properies of elements change periodicly with the atomic numbers of the elements number of the element
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| period | horizontal row of elements in the periodic table
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| group | a vertical colume of elements in the periodic table. the elements share chemical properties, also called family
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| alkali metal | 1 of the elements of group of the periodic table. EX sodium potasium and lytheiume
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| alkaline-earth-metal | 1 of the elements of group 2 of the periodic table EX magnesium calcium and radium
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| halogen | 1 of the elements of gropu 17 of the periodic table EX florine iodine. they combine with metals to form salts
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| noble gas | 1 of the elemtns of group 18 of the periodic table EX helium neon argon noble gases unreactive
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