Group 1: the alkali metals Quiz
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5 questions, one answer each
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1. Which property is typical of Group 1 metals?
- A. High density
- B. Hard and strong
- C. Soft with a low melting point
- D. Does not react with water
2. Which equation correctly shows lithium reacting with water?
- A. Li + H₂O → LiOH + H₂
- B. 2Li + 2H₂O → 2LiOH + H₂
- C. 2Li + H₂O → Li₂O + H₂
- D. Li + 2H₂O → LiOH₂ + H₂
3. Why is rubidium more reactive than sodium?
- A. Its outer electron is further from the nucleus and lost more easily
- B. It has more electrons in its outer shell
- C. It has a higher melting point
- D. Its atoms are smaller
4. What happens to universal indicator when it is added to the solution formed by sodium and water?
- A. It turns red
- B. It stays green
- C. It turns yellow
- D. It turns purple
5. Why must potassium be stored under oil?
- A. It reacts with oxygen and water vapour in the air
- B. It is too dense to store in air
- C. It would melt at room temperature
- D. It reacts with the glass bottle