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Chapter12Vocab.

Periodic TableTerms

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. Most reactive metals.
Akali metal elements in group one of the periodic table. They share physical and chemical properties.
Akaline-Earth metal elements in Group two of the periodic table. Less reactive.
Halogen one of the elements of group 17 of the periodic table; halogen combines with most metals to form salts.
Noble Gas one of the elements of Group 18 of the periodic table; noble gasses are unreactive.
Created by: TMS2224
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