Uses of Copper Quiz
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5 questions, one answer each
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1. Why is copper used in electrical wiring?
- A. It is a poor conductor
- B. It is a good conductor of electricity
- C. It reacts with water
- D. It is brittle
2. Why is copper suitable for water pipes?
- A. It reacts readily with water
- B. It does not react with water
- C. It dissolves in water
- D. It is a gas at room temperature
3. Which pair of properties makes copper good for plumbing?
- A. Reactive and brittle
- B. Bendable but hard enough to hold shape
- C. Magnetic and radioactive
- D. Soluble and volatile
4. What would happen if pipes were made from a very reactive metal instead of copper?
- A. Nothing would change
- B. The pipes could corrode and contaminate the water
- C. The pipes would conduct electricity better
- D. The pipes would become more malleable
5. A manufacturer needs a metal for hot water pipes that will not react with the water flowing through it and can be bent around corners without cracking. Which property combination best justifies choosing copper over a more reactive metal?
- A. High reactivity and low melting point
- B. Chemical unreactivity with water and sufficient malleability/hardness
- C. Low density and high solubility
- D. Poor thermal conductivity and brittleness