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chapter 12 v

vocab

QuestionAnswer
periodic describes something that occurs or repeats at regular intervals
periodic law the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
period in chemistry a horizontal row of elements in the periodic table
group a verticle column of elements in the periodic table; elements in a group share chemicle properties
alkali metal one of the elements of group 1 of the periodic table(lithium,sodium,potassium,rubidium,cesium,and francium)
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