click below
click below
Normal Size Small Size show me how
Lisa Gabel
Chapter 5 Vocabulary
| Term | Definition |
|---|---|
| Periodic Table | Is an arrangement of elements in columns, based on a set of properties that repeat from row to row. |
| Period | A row in a periodic table of elements. |
| 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. |
| Non Metals | Elements that are poor conductors of heat and electric current |
| Metalloids | Elements with properties that fall between those of metals and nonmetals. |
| valence Electrons | 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. |
| Alkali 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. |