Group 2: the alkaline earth metals Quiz
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5 questions, one answer each
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1. Which equation is balanced?
- A. Mg + HCl → MgCl₂ + H₂
- B. Mg + 2HCl → MgCl₂ + H₂
- C. Mg + 2HCl → MgCl + H₂
- D. 2Mg + HCl → MgCl₂ + H₂
2. What is the charge on a calcium ion?
- A. 1+
- B. 1−
- C. 2+
- D. 2−
3. Which metal is the most reactive?
- A. Barium
- B. Calcium
- C. Magnesium
- D. They are equally reactive
4. Which compound is used in indigestion tablets?
- A. Calcium oxide
- B. Magnesium oxide
- C. Calcium chloride
- D. Magnesium hydroxide
5. A farmer spreads calcium hydroxide on a field. Why?
- A. To make the soil more acidic
- B. To neutralise acidic soil
- C. To make the soil denser
- D. To kill the crops