## Chemistry and Chemical Reactivity (9th Edition)

A) Pt is an element, and $Pt(NH_3)_2Cl_2$ is a compound. B) Copper is an element, and copper(II) oxide is a compound. C) Silicon is an element, and sand is a compound.
A) Pt is an element, and $Pt(NH_3)_2Cl_2$ is a compound. B) Copper is an element, and copper(II) oxide is a compound. C) Silicon is an element, and sand is a compound.