Group I Properties Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. Which of the following statements correctly describes the physical properties of Group I alkali metals?
- A. They are relatively soft metals with low melting points
- B. They are hard metals that conduct electricity poorly
- C. They are dense metals with high melting points
- D. They are brittle non-metals that are unreactive
2. As you descend Group I from lithium to potassium, what happens to the reactivity of the metals?
- A. Reactivity decreases
- B. Reactivity increases
- C. Reactivity remains constant
- D. Reactivity increases then decreases
3. Which trend is observed when moving down Group I from lithium to potassium?
- A. Melting point increases and density decreases
- B. Melting point decreases and density increases
- C. Both melting point and density increase
- D. Both melting point and density decrease
4. Sodium is a Group I metal that is relatively soft and has a melting point of 98°C. Based on the trends in Group I, which statement about potassium is correct?
- A. Potassium has a higher melting point and is less reactive than sodium
- B. Potassium has a lower melting point and is more reactive than sodium
- C. Potassium has the same melting point but higher density than sodium
- D. Potassium is harder and has a lower density than sodium
5. A scientist observes that an unknown Group I element has a melting point lower than sodium but greater reactivity than sodium. Which of the following can be reliably concluded about this element?
- A. It must be lithium because it has a lower melting point
- B. It must be potassium because it is more reactive and has the expected lower melting point
- C. It cannot be a Group I element because the properties contradict the group trends
- D. It must be rubidium, which is the next element below potassium in Group I