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S8P1.f
recognized that there arw more than 100 elements and some have similar propertie
| Term | Definition |
|---|---|
| Periodic table | A chart that organizes information about all of know elements according to there properties |
| Period | In chemistry a horizontal row of elements in the period table |
| Group | A vertical column of element in the periodic table; element in a group share chemical properties |
| Valence eletrons | A electron that is found in the outermost shell of an atom and that determines the atom's chemical properties |
| Reactivity | Describes how likely an element is to from bonds with other elements |
| Metalloid | Elements that have properties of both metals and nometals |
| Inert | Unable to react chemically under normal circumstances |