click below
click below
Normal Size Small Size show me how
Noah Gaskins
Chapter 5 Vocab.
| Term | Definition |
|---|---|
| Periodic Table | An arrangement of elements in columns, based on a set of properties that repeat from row to row. |
| Period | Each row in the table of elements is a period. |
| Group | A column of elements in a periodic table |
| Periodic Law | The pattern of repeating properties displayed by elements in the periodic table |
| Atomic Mass Unit (amu) | One twelfth the mass of a carbon-12 atom |
| Metals | Elements that are good conductors of heat and electric current |
| Transition Metals | Elements that form a bridge between elements on the left and right sides of the periodic table |
| Nonmetals | Elements that are poor conductors of heat and electric current |
| Metalloids | Elements with properties that fall between those of metals and nonmetals |
| Valence Electron | An electron that is in the highest occupied energy level of an atom |
| Alkali Metals | The elements in Group 1A of the periodic table, not including Hydrogen |
| Alkaline Earth Metals | The elements in Group 2A of the periodic table |
| Halogens | The elements in Group 7A of the periodic table |
| Noble Gases | The elements in Group 8A of the periodic table |