Which of these is considered a visual sign of a potential chemical hazard?

Select all that apply.

A. Gas

B. Liquid

C. Fume

D. Mist

Answer

A. Gas

C. Fume

D. Mist

Explanation

Visual signs of potential chemical hazards often include gas, fumes, and mist, as they can be seen or detected in the air. Gases may appear as clouds or vapors, fumes are visible particles suspended in the air, and mists are small liquid droplets that are often visible. Liquids, while they can be hazardous, are not typically a "visual sign" in the air, as they are seen as a state of matter rather than a hazardous form in the environment.