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S8P1.f
Recognize that there are more than 100 elements and some have similar properties
| Term | Definition |
|---|---|
| Periodic Table | a chart that organizes information about all of the known elements accordingly to their properties. |
| Period | in chemistry, a horizontal row of elements in the periodic table. |
| Group | a vertical column of elements in the periodic table; elements in a group share chemical properties. |
| Valence Electron | an electron that is found in the outermost shell of an atom & that determines the atoms chemical properties. |
| Reactivity | describes how likely an element I to form bonds with other elements. |
| Metalloid | elements that have properties of both metals & nonmetals. |
| Inert | unable to react chemically under normal circumstances. |