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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 according 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 group share chemical properties |
| valence elcetrons | |
| reactivity | |
| metalloid | |
| inert |