Question

complete the sentence by using word ion, molecule, atom or element. a(n) ____ is the smallest particle of a covalent compound that still has the properties of the compound.

Explanation:

A molecule is the smallest particle of a covalent compound that retains the properties of the compound. Atoms are the basic units of elements. Ions are charged atoms or groups of atoms. An element is a pure substance made of only one type of atom.

Answer:

molecule