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S8P1.f
Recognize that there are more than 100 elements and some have similar properties
| Term | Definition |
|---|---|
| Periodic Table | The chart that organizes all the known elements according to their properties |
| Period | In chemistry, a horizontal row of elements in the periodic table |
| Group | In chemistry, a vertical row of elements in the periodic table |
| Valence Electrons | An electron that is found on the outermost shell of an atom and determines the atom's chemical properties |
| Reactivity | Describes how likely an element is to form bonds with other elements |
| Metalloid | Elements that have the properties of both metals and nonmetals |
| Inert | To react chemically under normal circumstances |