What is the white product in the crucible?
What is the white product in the crucible?
Reacts with oxygen in the air to produce a white Zinc Oxide, producing white smoke, which does not melt into brass liquid, and the remaining copper in the crucible is also Zinc Oxide, so the phenomenon that you describe
The brass is an alloy of copper and zinc, zinc has a low boiling point only more than 900 degrees, the heating and melting temperature of brass tend to be one thousand degrees, zinc to produce steam
