Acids & Carbonates Quiz
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5 questions, one answer each
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1. What three products are formed when a metal carbonate reacts with an acid?
- A. A salt, water and hydrogen
- B. A salt, water and carbon dioxide
- C. An oxide, water and carbon dioxide
- D. A salt and carbon dioxide only
2. What salt is formed when a metal carbonate reacts with sulfuric acid?
- A. A chloride
- B. A nitrate
- C. A sulfate
- D. An oxide
3. What visible observation confirms a reaction is taking place between a metal carbonate and an acid?
- A. The solution turns blue
- B. Effervescence (fizzing/bubbling)
- C. A strong smell of ammonia
- D. A white precipitate forms immediately in the reaction flask
4. A student reacts an unknown white solid with dilute nitric acid and sees fizzing. They bubble the gas through limewater and it turns cloudy white. What can they conclude?
- A. The solid is a metal oxide, not a carbonate
- B. The solid is a carbonate, and a nitrate salt has also been formed
- C. The solid contains no carbon at all
- D. The gas produced must be hydrogen
5. Which balanced equation correctly represents magnesium carbonate reacting with hydrochloric acid?
- A. MgCO3(s) + 2HCl(aq) -> MgCl2(aq) + H2O(l) + CO2(g)
- B. MgCO3(s) + HCl(aq) -> MgCl(aq) + H2O(l)
- C. Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g)
- D. MgCO3(s) + 2HCl(aq) -> MgO(s) + H2O(l) + Cl2(g)