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Chapter 12 Vocabular

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 vertical column of elements in the periodic table; elements in a group share chemical properties
Alkali metal One of the elements of Group 1 of the periodic table .
Alkaline-earth metal one of the elements of Group 2 of the periodic table.
Halogen one of the elements of Group 17 of the periodic table; halogens combine with most metals to form salts.
Created by: zim123abc
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