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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 | in chemistry, a horizontal row of elements in the periodic talbe |
| group | a vertical column of elements in the periodic table; elements in a group share chemical; properties |
| valence eletrons | an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties |
| reactivity | describe how likely an element is to from bounds with other elements |
| metalloid | elements that have properties of both metals and nonmetals |