Why the flame with a platinum wire or copper wire, no
The flame reaction of some metals or their compounds in the volatile colorless flame burning in the flames of the color characteristics of the reaction.
Do the flame strictly speaking only with platinum, inert metals and other substances, not easy to react, and high melting point. The heavy stick I can remember 50 dollars to do a flame reaction.
Strictly speaking, iron wire is not allowed, but in many cases, iron wires are used when conditions are not allowed or when they are not required
