Answer:
Brass is an alloy of copper (Cu) and zinc (Zn).
Red brass is 85% copper and 15% zinc, while yellow brass is 60% copper and 40% zinc.
It's important in chemistry to understand that brass is not a compound of copper and zinc; it is a homogeneous mixture of those elements. A compound contains at least two chemically bonded elements, copper and zinc in brass aren't bonded by covalent bonds, ionic bonds, etc.; they're simply mixed together to form brass.