What does a chemical indicator show in the context of sterilization?

A chemical indicator in the context of sterilization is designed to show whether the required temperature for effective sterilization has been reached. These indicators usually change color or display some other visual cue when the appropriate conditions for sterilization, such as temperature and pressure, are met during the sterilization process. This helps ensure that the equipment and tools are properly sterilized, effectively reducing the risk of infection and ensuring patient safety in clinical settings.

The other choices pertain to different notions that are not addressed by chemical indicators. For example, a chemical indicator does not evaluate the effectiveness of soap used during cleaning or washing processes, nor does it measure the duration of washing. Additionally, it does not identify the specific types of microorganisms present, as that would require microbiological testing methods rather than sterilization indicators.