Phases and Classification of Matter| Essential Ideas| Chemistry| Openstax| Problem 14

How does an atom differ from a molecule? In what ways are they similar?


An atom consists of only one particle; a molecule consists of two or more atoms. They are similar in that both are composed of the basic building block in chemistry, the atom.

Do you need help with your studies? is here to help you succeed in your academic endeavors. We offer online tutoring, homework help. project assistance, lab report writing, and online course help. Send an email to