Which of these is NOT considered a physical hazard?

In the context of workplace safety, physical hazards refer to factors in the environment that can harm individuals, typically causing physical harm or injury. High noise levels, rotating machinery, and unstable structures all fall into this category. High noise levels can lead to hearing loss or other health issues, rotating machinery poses risks of physical injury through entanglement or contact, and unstable structures can lead to collapses or falls.

Conversely, chemical spills are classified under chemical hazards rather than physical hazards. While they can pose significant health risks and may lead to physical injuries indirectly, they originate from toxic or hazardous substances reacting improperly, rather than from physical forces or conditions. Therefore, chemical spills do not fit the definition of a physical hazard, emphasizing why this choice is correct in identifying something that does not belong in the category of physical hazards.