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U2,L2- Chemistry
Periodic Table
Term | Definition |
---|---|
atomic number | the number of protons contained in an atom of an element |
Periodic Table | a chart that shows all of the elements arranged by atomic numbers and by properties |
group | A column on the periodic table |
period | A row on the periodic table |
element | A pure substance made of only one kind of atom |
chemical symbol | An abbreviation of the element's name |