Question

sam says that all molecules are compounds. jac disagrees and says that all compounds are molecules. who is right and why?
a. sam is correct because all compounds have at least two atoms bonded together and all molecules have at least two atoms bonded together.
b. both sam and jack are correct because molecules and compounds are the same thing.
c. jac is correct because a molecule has at least two atoms bonded together and all compounds have at least two different atoms bonded together.
d. neither jac nor sam are correct because molecules and compounds are two different things.

Explanation:

A molecule is formed when two or more atoms bond together. A compound is a type of molecule that consists of two or more different types of atoms. So all compounds are molecules, but not all molecules are compounds (e.g., $O_2$ is a molecule but not a compound as it has only oxygen atoms). Jac's statement is correct.

Answer:

C. Jac is correct because a molecule has at least two atoms bonded together and all compounds have at least two different atoms bonded together.