Question

what qualifies a substance to be considered a molecule? there need only be one atom to be considered a molecule only substances that have different atoms bonded together are considered molecules only substances that have the same type of atoms bonded together are considered molecules there must be more than one atom (same or different) bonded together.

Explanation:

A molecule is formed when two or more atoms (either of the same or different elements) are chemically bonded together. One - atom substances are not molecules. Substances with different atoms bonded are compounds (a type of molecule), and substances with the same - type atoms bonded are also molecules (e.g., $O_2$).

Answer:

There must be more than one atom (same or different) bonded together.