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Periodic law & rep g

Periodic law and representative groups vocabulary practice

QuestionAnswer
Atomic mass the number of protons plus the number of neutrons. Can also be called mass number.
Chemical symbol abbreviation for an element
Atomic number the number of protons in an element
Periodic law the recurring pattern in the properties of elements when they are arranged in order of increasing atomic number on the periodic table
Group (family) vertical columns on the periodic table
Period horizontal rows on the periodic table
Valence electrons electrons in the outer shell; can be determined by looking at the element's group number
Diatomic molecule element that bonds to itself
Created by: ECOTScience
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