Question

exam lesson name: states of matter
exam number: 700698rr
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question 19 of 20 :
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1. which statement describes gases properties gases accurately?

○ a. a change in a gass pressure results in a more significant change in volume than would occur in a liquid.
○ b. when the mass of gases remains constant, the gases have low compressibility and low expansibility.
○ c. applying an external force to an enclosed volume of air will allow the air to expand and the volume to decrease.
○ d. gases expand very easily because of a property called compressibility.
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Explanation:

• Analyze Option A: Gases are highly compressible and have high expansibility. A change in pressure for a gas leads to a more significant volume change than in a liquid (which is nearly incompressible). This matches gas properties.
• Analyze Option B: Gases have high compressibility and high expansibility, not low. So B is incorrect.
• Analyze Option C: Applying external force (increasing pressure) to enclosed air would decrease its volume (compress it), not allow it to expand and decrease volume. So C is incorrect.
• Analyze Option D: Gases expand easily due to high expansibility, and compressibility refers to being able to be compressed, not expansion. So D misdefines the property.

Answer:

A. A change in a gas's pressure results in a more significant change in volume than would occur in a liquid.