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S8P1.f
Reconize that there are more than 100 elements and some have similar properties
| Term | Definition |
|---|---|
| Periodic table | a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure appear in vertical columns. |
| Period | A period is the name given to a horizontal row of the periodic table. |
| Group | any collection or assemblage of persons or things; cluster; aggregation: |
| Valence electrons | an electron that is associated with an atom, and that can participate in the formation of a chemical bond; |
| Reactivity | the state or power of being reactive or the degree to which a thing is reactive. |
| Metalloid | an element whose properties are intermediate between those of metals and solid nonmetals |
| Inert | lacking the ability or strength to move. |