Final answer:
The oxyacetylene torch is a cutting tool that uses an exothermic reaction from burning acetylene in oxygen to reach high temperatures capable of melting metals, requiring special training to operate safely.
Step-by-step explanation:
The subject of the question is the oxyacetylene torch, a tool that produces a high-temperature flame used for cutting and welding metals. When acetylene burns in oxygen within the torch, an exothermic reaction occurs, generating heat that can exceed 3000°C. For safety and efficiency, operators must receive special training due to the tool's high temperatures and potential hazards, highlighting the significance of safety precautions when working with such intense heat and flammable gases. The exothermic reaction in an oxyacetylene torch is what allows it to heat metal to its melting point, enabling it to cut through the material.