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chapter12 vocab
science homework
Question | Answer |
---|---|
periodic | describes something that occurs or repeats at regular intervels |
periodic law | the law that states that the repeating chemical and physical properties of elements change periodically with 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 yable elements in a group share chemical properties |
alkali metal | one of the elements of a 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 |
noble gas | one of the elements of group 18 of the periodic table |