Chapter 5 Vocabulary

Front

An arrangement of elements in columns, based on a set of properties that repeat from row to row.

Back

Periodic Table

Front

An electron that is in the highest occupied energy level of an atom.

Back

Valence electron

Front

The elements in Group 1A of the periodic table, not including hydrogen.

Back

Alkali metals

Front

The elements in Group 2A of the periodic table

Back

Alkaline earth metals

Front

The elements in Group 7A of the periodic table

Back

Halogens

Front

The elements in Group 8A of the periodic table

Back

Noble gases

Front

A row in the periodic table of elements

Back

period

Front

A column of elements in a periodic table

Back

group

Front

The pattern of repeating properties displayed by elements in the periodic table.

Back

periodic law

Front

one twelfth the mass of a carbon-12 atom

Back

atomic mass unit (amu)