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Answer:
An atom is the smallest unit of matter, and contains three parts: the proton, the neutron, and the electron. A molecule is a group of atoms bonded together.
Step-by-step explanation:
amritacreate. Atoms are the smallest particle into which an element can be divided. Atoms can join together to form molecules, which in turn form most of the objects around you. Atoms are composed of particles called protons, electrons and neutrons