Question

a welding torch produces a flame by burning acetylene fuel in the presence of oxygen. this flame is used to melt a metal. which energy transformation represents this process?
○ chemical energy into thermal energy
○ kinetic energy into potential energy
○ kinetic energy into electromagnetic energy
○ potential energy into chemical energy

Explanation:

The process involves burning acetylene (a chemical reaction), where chemical energy stored in the fuel is converted into thermal energy (heat) to melt the metal. The other options don't match: kinetic - potential (movement to stored, not here), kinetic - electromagnetic (no), potential - chemical (reverse of what happens).

Answer:

A. chemical energy into thermal energy