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Chp.1.2-UnitD
Elements make up the periodic table
Question | Answer |
---|---|
atomic mass | the average mass of the atoms of an element |
periodic table | a table of the elements, arranged by atomic number, that shows patterns in their properties |
group | a vertical column in the periodic table of the elements. they have similar properties |
period | a horizontal row in the periodic table of the elements. they have varying properties |