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Erin Rang
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 |
Group | Each column on the periodic table |
Periodic Law | The pattern of repeating properties |
Atomic Mass Unit | Defined as one twelfth the mass of a carbon-12 atom |
Metals | Elements that are good conductors of electric current and heat |
Transition Metals | elements that form a bridge between the elements on the left and right side 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 Electrons | An electron that is in the highest occupied energy level of an atom |
Alkaline Metals | The elements in group 1A |
Alkaline Earth Metals | The elements in group 2A |
Halogens | The elements in group 7A |
Noble Gasses | The elements in group 8A |