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Vanessa Sarver
Chapter 5 Vocabulary
Term | Definition |
---|---|
Periodic Table | 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. |
Row | A column in a periodic table of elements. |
Periodic Law | Pattern of repeating properties. |
Atomic Mass Units (AMU) | Defined as one twelfth the mass of carbon-12 atom. |
Transition Metals | Elements that form a bridge between the elements on the left and right sides of the 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 | Electron that is in the highest occupied energy level of an atom. |
Alakli Metals | Elements in Group 1A. |
Alkaline Earth Metals | Elements in Group 2A. |
Halogens | Elements in Group 7A. |
Noble Gases | Elements in Group 8A. |