Final answer:
The statement refers to a rapid combustion process that ignites flammable vapors with high heat production, emphasizing the importance of safety measures when handling such chemicals.
Step-by-step explanation:
The statement "_____ vapors, immediately upon ignition, burn with lightning rapidity with high heat production. Exposed combustible material in the flash area will be ignited" refers to the combustion process which is a rapid chemical reaction combining molecules of oxygen with molecules of fuel that releases energy in the form of light and heat. In terms of safety, this highlights the importance of following instructions carefully on how to handle flammable chemicals. An example can be the high-temperature combustion of fuels like gas, diesel, or coal. Such combustion can cause an explosion where matter is heated to extreme temperatures, emitting intense X-ray and ultraviolet radiation. Safety is paramount when dealing with combustible substances; appropriate measures, such as the use of fume hoods and avoidance of exposure to sparks or open flames, must be in place. The considerable energy release involved in such processes can rapidly ignite any combustible materials in the vicinity.