Final answer:
Asbestos is considered a chemical hazard because it poses health risks due to its chemical composition and fibrous nature when airborne.
Step-by-step explanation:
Asbestos is classified as a chemical hazard rather than a physical hazard. It is a naturally occurring mineral fiber that has been widely used in construction and manufacturing due to its strength, heat resistance, and insulating properties. Asbestos fibers, when disturbed or damaged, can become airborne and pose significant health risks if inhaled. Exposure to asbestos can lead to serious diseases, such as lung cancer, mesothelioma, and asbestosis.
These health risks are associated with the chemical composition and fibrous nature of asbestos minerals. Additionally, the NFPA hazard diamond, used to summarize the major hazards of a chemical substance, includes asbestos as a chemical hazard due to its potential effects on human health.