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50 free Copper trivia questions with answers — science & nature quiz, new questions added Aug 2026.
Copper was the first metal humans smelted, cast and alloyed, and it still carries most of the world's electricity. This quiz covers the element from every angle: the chemistry (symbol Cu, atomic number 29, why it is one of the only coloured metals, what beats it for conductivity), the history (a pendant from 8700 BC Iraq, Ötzi's axe, Egyptian blue, Roman aes Cyprium, Sweden's Great Copper Mountain, the age of electricity) and the industry (Chile, Bingham Canyon and Chuquicamata, chalcopyrite, flash smelting, recycling, the CIPEC cartel). It also gets into the everyday copper you have touched: brass and bronze, the US penny before and after 1982, the nickel that is mostly copper, the Statue of Liberty's 2.4 mm skin and how long it took to turn green, copper bowls for egg whites, antimicrobial handrails in Santiago's subway, blue-blooded horseshoe crabs and Wilson's disease. Easy questions cover the symbol, the colour and the green patina; the expert tier asks for tonnages, dates and obscure alloys. Every answer was checked against Wikipedia's articles on copper, the Statue of Liberty, the US cent, the major mines and related pages, and the supporting sentence is attached to each question. If you enjoy this, try our quizzes on gold, the periodic table and the Bronze Age.
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Q 01What is the chemical symbol for copper?
Cu
It comes from the Latin cuprum; Co is cobalt and Cr is chromium.
Q 02What is copper's atomic number?
29
Its neighbours in group 11, silver and gold, are 47 and 79.
Q 03From which Latin word does the symbol Cu derive?
Cuprum
The word evolved from aes cyprium, 'metal of Cyprus'.
Q 04Which island gave copper its name?
Cyprus
Romans called it aes cyprium, and the island was sacred to Aphrodite, copper's goddess.
Q 05Which pure metal is the only one with higher electrical conductivity than copper?
Silver
Copper's softness partly explains its conductivity, which is why it dominates wiring.
Q 06What colour is a freshly exposed surface of pure copper?
Pinkish-orange
It is one of very few metals whose natural colour is not grey or silver.
Q 07What is the green patina on old copper roofs and statues called?
Verdigris
It is a layer of copper carbonate that protects the metal beneath.
Q 08Alloying copper with which metal produced bronze, in around 3500 BC?
Tin
It was the first time humans deliberately alloyed one metal with another.
Q 09What is an alloy of copper and zinc called?
Brass
Typically it is about two-thirds copper and one-third zinc.
Q 10What percentage of a US five-cent 'nickel' is actually copper?
75%
The coin is a homogeneous cupronickel alloy, only a quarter nickel.
Q 11Which country is the world's largest copper producer?
Chile
It supplied around 70% of US refined copper imports through 2024.
Q 12Which mine near Calama is the world's largest open-pit copper mine by excavated volume?
Chuquicamata
Nicknamed Chuqui, it sits 2,850 m above sea level and is 850 m deep.
Q 13In which US state is Bingham Canyon, the deepest open-pit mine on Earth?
Utah
Southwest of Salt Lake City, it has produced more copper than any mine in history.
Q 14Which mining group owns the Bingham Canyon copper mine?
Q 21Roughly what share of all copper ever mined is estimated to still be in use?
80%
Like aluminium, it can be recycled endlessly with no loss of quality.
Q 22Copper ranks where among the most abundant elements in Earth's crust?
26th
At about 50 parts per million it trails zinc's 75 ppm.
Q 23Which heavenly body and goddess represented copper in mythology and alchemy?
Venus
It was the brightest body after the Sun and Moon, matching the most lustrous metal after gold and silver.
Q 24Which synthetic copper pigment was first used in ancient Egypt around 3250 BC?
Rio Tinto
It has been in production since 1906 and its pit is more than 1,200 metres deep.
Q 15Which brassy-yellow sulfide is the most abundant copper ore mineral?
Chalcopyrite
Its formula is CuFeS2 and its streak is a diagnostic green-tinged black.
Q 16How pure was the copper of the axe blade found with Ötzi the Iceman?
99.7%
High arsenic levels in his hair suggest he was involved in smelting.
Q 17How thick is the copper skin of the Statue of Liberty?
About 2.4 mm
The sheets were shaped by repoussé, heated and struck with wooden hammers.
Q 18By which year had a green patina entirely covered the Statue of Liberty?
1906
Congress voted money to paint it before engineers found the patina was protective.
Q 19What did the Army Corps of Engineers conclude about the Statue of Liberty's patina?
It protected the skin
They said it 'softened the outlines of the Statue and made it beautiful', so only the inside was painted.
Q 20Where was the largest lump of native copper ever found, 420 tonnes, discovered in 1857?
Keweenaw Peninsula
The Keweenaw district led American copper output until Butte eclipsed it in the 1880s.
Egyptian blue
Its recipe was lost after the fourth century AD and only reconstructed in modern times.
Q 25Which copper-based protein gives horseshoe crabs and most molluscs blue blood?
Hemocyanin
Iron-based hemoglobin makes our blood red instead.
Q 26Which genetic disorder causes copper to accumulate in body tissues?
Wilson's disease
It can lead to cirrhosis of the liver and psychiatric symptoms.
Q 27What is the single biggest use of copper, taking about 60% of it?
Electrical wire
Roofing and plumbing take about 20% and machinery 15%.
Q 28Which airliner uses aluminium wire instead of copper for electrical power transmission?
Airbus A380
Properly sized aluminium wire avoids the fire hazards seen in 1970s US homes.
Q 29When did aluminium wiring briefly replace copper in many US homes, causing fires?
Late 1960s to late 1970s
Improper design was the problem; larger-gauge aluminium wire is still installed today.
Q 30The Great Copper Mountain, which funded Sweden's 17th-century wars, was in which town?
Falun
It supplied two-thirds of Europe's copper and operated until 1992.