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
It should be a "pure" substance, but its really an alloy.
pure substance
Either gold or copper on their own would be pure substances. But if you have them together it's a mixture, not a pure substance.
It should be a "pure" substance, but its really an alloy.
pure substance
No. Sulfur dioxide is a compound, which makes it a pure substance, not a mixture.
Copper is a pure substance.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.
Copper sulfate is a pure substance.
No, it is a pure substance.
Sulfur is not a mixture at all. It is a pure substance. Specifically it is an element.
It should be a "pure" substance, but its really an alloy.
No, copper chloride is a pure substance.
No, copper chloride is a pure substance.
copper is an ELEMENT therefore it is not a heterogeneous OR homogeneous mixture.