He underwent an examination of the hard palate.

This mineral is called anhydrite.

Transition metals play an important role in chemical reactions.

When he opened the door, a metallic sound echoed.

Alkali metals are very reactive chemically.

Metallic bonds are formed by ions floating in a sea of electrons.

He gave me the cold shoulder.

He is always learning new skills to avoid becoming a desk worker.

He is of Han Chinese descent.

He is from the Hui people, a minority ethnic group in China.