MCAT General Chemistry Question 116: Answer and Explanation
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Question: 116
11. The gaseous state of matter is characterized by which of the following properties?
I. Gases are compressible.
II. Gases assume the volume of their containers.
III. Gas particles exist as diatomic molecules.
- A. I only
- B. I and II only
- C. II and III only
- D. I, II, and III
Correct Answer: B
Explanation:
Gases are easily compressible because they travel freely with large amounts of space between molecules. Because gas particles are far apart from each other and in rapid motion, they tend to take up the volume of their container; this is also true for liquids. Many gases exist as diatomic molecules, but this is not a property that characterizes all gases, eliminating option III.