Front

Elements that have properties of BOTH metals and nonmetals

Back

Metalloids

Front

A vertical column of elements in the periodic table; share chemical properties

Back

Group

Front

The number of Groups in the periodic table

Back

18

Front

Nonreactive nonmetals in Group 18 of the periodic table

Back

Noble Gases

Front

In chemistry, a horizontal row of elements in the periodic table

Back

Period

Front

Elements that are good conductors of heat and electricity

Back

Metals

Front

Elements that are poor conductors and are often gases or brittle solids

Back

Nonmetals

Front

The elements in Group 1 of the periodic table, known for being highly reactive

Back

Alkali Metals

Front

The elements in Group 2 of the periodic table, known for being reactive but less so than alkali metals

Back

Alkaline-Earth Metals

Front

The elements in Group 17 of the periodic table, known for being very reactive nonmetals

Back

Halogens