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chapter 5 vocab.
vocabulary
| Term | Definition |
|---|---|
| Period | Each row in the table of elements. |
| Group | Are each column on the Periodic Table. |
| Periodic Law | Pattern of repeating properties in the periodic Table. |
| Atomic Mass Unit | Is defined as one twelfth the mass of a carbon-12 atom. |
| Metals | Are elements that are good conductors of electricity and heat. |
| Transition Metals | Are elements that form a bridge between the elements on the left and right sides of the Periodic Table. |
| Nonmetals | Are elements that are poor conductors of electricity and heat. |
| Metalliods | Are elements with properties that fall between those of metals and nonmetals. |
| Periodic Table | Is an arrangement of elements in columns, based on a set of properties. |
| Valence Electron | An electron that is in the highest occupied energy level of an atom. |
| Alkali Metals | The elements in group 1A |
| Alkaline Earth Metals | The elements in group 2A |
| Halogens | The elements in group A7 |
| Noble Gases | The elements in group A8 |