Final answer:
During a physical change, the arrangement of particles in the substance may change, but the atoms in the molecules remain bonded together.
Step-by-step explanation:
When a physical change occurs, the arrangement of particles in the substance may change, but the atoms in the molecules remain bonded together. For example, when liquid water boils, the molecules move apart, but the water molecule remains intact. The same is true when an ice cube melts; its shape changes, but its composition does not.