Final answer:
The statement implies that substances behave similarly at different reduced conditions.
Step-by-step explanation:
The statement "Substances at corresponding states behave alike at the same reduced conditions" implies that substances behave similarly at different reduced conditions. This means that when substances are in states that correspond to each other (such as liquid to liquid or gas to gas), they exhibit similar behavior under the same reduced conditions. Reduced conditions refer to conditions that have been normalized or scaled down, such as temperature and pressure.