Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

Front

What are metals?

Back

Elements that are typically shiny, good conductors of heat and electricity, malleable, and ductile.

Front

What are nonmetals?

Back

Elements that are generally poor conductors of heat and electricity, and can be gases, liquids, or brittle solids.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, often semiconductors.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

Front

What are positive ions?

Back

Ions that have lost electrons, resulting in a net positive charge; typically formed by metals.

Front

What are negative ions?

Back

Ions that have gained electrons, resulting in a net negative charge; typically formed by nonmetals.

Front

What is an octet?

Back

A stable electron configuration of eight valence electrons, characteristic of noble gases.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of the noble gases?

Back

Noble gases have full outer electron shells, making them chemically inert and unlikely to react with other elements.