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Madison Burkhard
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 the table of elements |
Group | a column on the periodic table |
Periodic Law | a pattern of repeating properties |
Amu (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 of the tabele |
Nonmetals | elements that are poor conductors of heat and electric current |
Metalloids | elements with properties that fall between those metals and nonmetals |
Valence Electron | an electron that is in the highest occupied energy level of an atom |
Alkali Metals | elements in Group 1A |
Alkaline Earth Metals | elements in Group 2A |
Halogens | elements in Group 7A |
Noble Gases | elements in Group 8A |