Context: In the Roman era, copper was principally mined on Cyprus, the origin of the name of the metal from aes сyprium (metal of Cyprus), later corrupted to сuprum, from which the words copper (English), cuivre (French), Koper (Dutch) and Kupfer (German) are all derived. Its compounds are commonly encountered as copper(II) salts, which often impart blue or green colors to minerals such as azurite, malachite and turquoise and have been widely used historically as pigments. Architectural structures built with copper corrode to give green verdigris (or patina). Decorative art prominently features copper, both by itself and in the form of pigments.

Question: Where was copper mostly mined at in the Roman era?
Answer: Cyprus

Question: What term does the name copper originate from?
Answer: сuprum

Question: What componds are common in copper?
Answer: copper(II) salts

Question: What is one color common in copper salts?
Answer: blue

Question: What is the name of the color pigment on building structures that are made using copper.
Answer: green verdigris

Question: Where was copper glowing at in the Roman era?
Answer: Unanswerable

Question: What compounds are radioactive in copper?
Answer: Unanswerable

Question: What is the name of the color pigment on water that is made using copper?
Answer: Unanswerable

Question: What term means that copper is an imaginary substance?
Answer: Unanswerable

Question: What color is most rare in copper salts?
Answer: Unanswerable