Question 10
Metals and their CompoundsCopper and silver metals are commonly used as coins because they are
- A.easily reduced
- B.not easily reduced
- C.easily oxidized
- D.not easily oxidized.
Show the answer and explanation
Answer: D (not easily oxidized.)
Explanation
Copper and silver are low in the activity series, so they do not easily react with air and water (are not easily oxidised) and coins stay intact.