Oxides Quiz
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5 questions, one answer each
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1. What is an oxide?
- A. A compound of an element with hydrogen
- B. A compound formed between an element and oxygen
- C. Any compound containing carbon
- D. An element found in Group VII
2. Which of the following is classified as an acidic oxide?
- A. Calcium oxide, CaO
- B. Copper(II) oxide, CuO
- C. Sulfur dioxide, SO2
- D. Sodium oxide, Na2O
3. Which pair of oxides are classified as amphoteric?
- A. CaO and CuO
- B. Al2O3 and ZnO
- C. SO2 and CO2
- D. Na2O and MgO
4. What is the correct definition of a base?
- A. Any substance that dissolves in water
- B. An oxide or hydroxide of a metal
- C. A substance that turns litmus red
- D. A non-metal oxide
5. A student heats an unknown white solid with ammonium chloride and detects a gas that turns damp red litmus paper blue. What can be concluded, and what is produced alongside the gas?
- A. The solid is an acid; only water is produced
- B. The solid is a base; a salt and water are also produced, alongside ammonia gas
- C. The solid is a metal; hydrogen gas is produced
- D. The solid is neutral; no reaction has occurred