Group 1 (Alkali Metals) Quiz
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5 questions, one answer each
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1. What gas is produced when sodium reacts with water?
- A. Oxygen
- B. Carbon dioxide
- C. Hydrogen
- D. Chlorine
2. Which alkali metal reacts most vigorously with water: lithium, sodium or potassium?
- A. Lithium
- B. Sodium
- C. Potassium
- D. They react identically
3. How many electrons does a sodium atom have in its outer shell, and what ion does it form?
- A. 2 electrons, forms Na2+
- B. 1 electron, forms Na+
- C. 1 electron, forms Na−
- D. 7 electrons, forms Na7−
4. Why does reactivity increase down Group 1?
- A. Atoms get smaller, so electrons are lost more easily
- B. Atoms have more shells, so the outer electron is further from the nucleus and more shielded, making it easier to lose
- C. There are fewer protons in heavier atoms
- D. The outer electron becomes more strongly attracted to the nucleus
5. Based on the trend in Group 1, which statement about rubidium (below potassium) is most likely correct?
- A. Rubidium will react less vigorously with water than lithium
- B. Rubidium will have a higher melting point than potassium
- C. Rubidium will react more vigorously with water than potassium, and have a lower melting point
- D. Rubidium will not react with water at all