Becuase it's a mixture of copper and zinc.
Brass is a mixture
copper is a substance
Copper metal is an element and thus a pure substance.
Bronze and brass are copper alloys, not salts.
Bronze.
Mixture, because the elements are not chemical combined together.
It is made of a homogeneous mixture of copper and zinc, called an alloy. An alloy is a mixture of metals.
Becuase it's a mixture of copper and zinc.
Alloy
Brass is a homogeneous mixture of metals, which is called an alloy.
There is no substance called "copper sulphur". You could have a mixture of copper and sulphur, though. But there are compounds (pure substances) of copper and sulphur as well. They include copper I and copper II sulphide (Cu2S and CuS). Another, very common compound is copper sulphate, CuSO4
Brass is a mixture
Neither. Copper is not a mixture at all. It is a pure element.
Yes. For example, brass is a mixture of copper and zinc. A mixture of metals is called an alloy.
Copper wire is homogeneous.
A dime is composed of a metal mixture called an alloy, which is a homogeneous mixture. The metal alloy that makes up a dime is a mixture of copper and nickel.