Hazardous Chemical” Simple Definition -- elements, chemical compounds, or. mixtures of elements and/or compounds which poses potential risk to safety or health. Regulatory Definition - means any chemical which. presents a physical hazard or a health hazard.
Laboratory is a place to information about the hazards that are associated with a compound.
The answer is An object is in motion if it changes position relative to a reference point. You assume that the reference point is stationary, or not moving.