Multiple Choice
According to the kinetic molecular theory, what causes a gas to exert pressure on the walls of its container?
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7. Gases
Kinetic Molecular Theory
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According to the kinetic molecular theory, which aspect explains why gases will mix evenly when combined?
A
Gas particles occupy a significant volume compared to the container.
B
Gas particles attract each other strongly.
C
Gas particles are in constant, random motion.
D
Gas particles lose energy during collisions.
Verified step by step guidance1
Recall the key postulates of the kinetic molecular theory, which describes the behavior of gas particles.
Understand that gas particles are considered to be in constant, random motion, moving in straight lines until they collide with either the container walls or other particles.
Recognize that because of this constant, random motion, gas particles spread out and mix evenly throughout the available space, leading to uniform distribution.
Note that other options, such as gas particles occupying significant volume or attracting each other strongly, do not align with the assumptions of ideal gases in the kinetic molecular theory.
Conclude that the aspect explaining why gases mix evenly is the constant, random motion of gas particles, which causes them to disperse and fill the container uniformly.
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