click below
click below
Normal Size Small Size show me how
Cailynne
Chapter 5 Vocabulary
| Term | Definition |
|---|---|
| period | a row in a periodic table of elements |
| group | each column of elements of the periodic table |
| periodic law | the pattern of repeating properties displayed by elements in the periodic table |
| atomic mass unit | one twelve 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 |
| metalliods | elements with properties that fall between those of metals and nonmetals |
| valence electron | an electron that is in its 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 2A of the periodic table |
| halogens | the elements in group 7A of the periodic table |
| noble gases | the elements in 8A of the periodic table |
| periodic table | arrangements of elements in columns based on a set of properties that repeat row to row |