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Chapter 5 Vocabulary
| Question | Answer |
|---|---|
| An arrangement of elements in columns, based on a set of properties that repeat from row to row. | Periodic Table |
| Each row in the table of elements. | Period |
| Each column on the periodic table. | Group |
| The pattern of repeating properties. | Periodic Law |
| One twelfth the mass of a carbon-12 atom. | Atomic Mass Unit (AMU) |
| Elements that are good conductors of electric current and heat. | Metals |
| Elements that form a bridge between the elements on the left and right sides of the table. | Transition Metals |
| Elements that are poor conductors of heat and electric current. | Nonmetals |
| Elements with properties that fall between those of metals and nonmetals. | Metalloids |
| An electron that is in the highest occupied energy level of an atom. | Valence Electron |
| Elements in Group 1A. | Alkali Metals |
| Elements in Group 2A. | Alkaline Earth Metals |
| Elements in Group 7A. | Halogens |
| Elements in Group 8A. | Noble Gases |