Copper is a element. It is neither compound nor mixture.
Copper sulfate is a compound, not a mixture. It is composed of copper, sulfur, and oxygen elements chemically bonded in a fixed ratio.
No, copper chloride is a compound composed of copper and chlorine elements. It is not a mixture of different substances but rather a specific chemical compound with a fixed composition.
Neither, it is an alloy of Zinc and Copper. The difference is, in a compound, the elements are chemically bonded together, so a Copper Sulphate crystal is a compound of Copper, Sulphur and Oxygen - CuSO4. An alloy is a solid mixture made by melting two metals together. The Zinc is not chemically bonded to any of the Copper.
A quarter is a coin made of various elements, including copper and nickel. It is not an element itself, but a mixture of different elements.
Copper sulfate is a compound, not an element. It is composed of copper, sulfur, and oxygen atoms chemically bonded together. It is not a mixture because its composition is fixed and cannot be separated by physical means.
A copper door knob is a mixture of copper and other elements or compounds that form the alloy used to make the door knob. Copper itself is an element, but when combined with other elements or compounds to form an alloy, it becomes a mixture.
Mixture, because the elements are not chemical combined together.
A Penny is not a compound. It's just one word.
It's a compound as the copper and oxygen are chemically bound to each other.
Neither, copper is an element.
A mixture.
A mixture.