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S8P1.f
| Term | Definition |
|---|---|
| periodic table | a chart that organizes information about all of the known elements according to their properties |
| period | a horizontal row of elements in the periodic table |
| group | vertical column of elements in a group share chemical properties |
| valence electrons | an electron that is found in the outermost shell of an atom that determines the atom's chemical properties |
| reactivity | how likely an element is to form bonds with other elements |
| metalloid | elements that have properties of both metals and non-metals |
| inert | unable to react chemically under normal circumstances |