Final answer:
The characteristics described relate to hazards associated with chemical substances, including irritants, sensitizers, toxicity, narcotic effects, respiratory tract irritation, and environmental hazards.
Step-by-step explanation:
The characteristics described pertain to various hazardous properties of chemical substances. An irritant is a substance that causes irritation to skin and eyes, for example, hydrogen peroxide. A skin sensitizer is a substance that may lead to an allergic reaction upon contact with skin. Acute toxicity means that a substance can be harmful or even fatal when ingested or when it comes into contact with skin. Substances with narcotic effects can impact the central nervous system, cause drowsiness or unconsciousness. A respiratory tract irritant could cause issues like coughing or shortness of breath. Finally, substances hazardous to the ozone layer have the potential to deplete ozone and are flagged in certain environmental regulations.