Multiple Choice
According to the kinetic molecular theory, which factor primarily determines the direction and degree of diffusion of a gas?
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7. Gases
Kinetic Molecular Theory
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According to the kinetic molecular theory, what is the major defining property of gases compared to solids and liquids?
A
Gases have strong intermolecular forces holding the particles together.
B
Gases have particles that vibrate in fixed positions.
C
Gases have a fixed volume and shape.
D
Gases have particles that are far apart and move freely in all directions.
Verified step by step guidance1
Recall the kinetic molecular theory, which explains the behavior of particles in different states of matter: solids, liquids, and gases.
Understand that in solids, particles are closely packed and vibrate in fixed positions, giving solids a fixed shape and volume.
Recognize that in liquids, particles are close but can move past each other, allowing liquids to have a fixed volume but no fixed shape.
Note that gases differ because their particles are far apart and move freely in all directions, which means gases have neither a fixed shape nor a fixed volume.
Conclude that the major defining property of gases, according to the kinetic molecular theory, is that their particles are widely spaced and move independently and rapidly.
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