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sc chapter 12
periodic table
| term | definition |
|---|---|
| Periodic | describes something that occurs or repeats at regular intervals |
| Periodic laws | The law that states that the repeating chemical and physical properties of elements change periodically with the atomic number of the elements |
| Period | in chemistry, a horizontalrow of the elements in the periodic table |
| Group | a vertical column of elements in the periodic table; elements in a group share chemical properties |
| Alkali metal | one of the elements of grop 1 of the periodic table |
| Alkali-earth metal | one of the elements of group 2 of tthe periodic table |
| Halogen | one of the elements of group 17 of the periodic table |
| Noble gas | one of the elements of group 18 of the periodic table |