Multiple Choice
According to the kinetic molecular theory, which of the following expressions correctly gives the average speed v_{avg} of molecules in an ideal gas?
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7. Gases
Kinetic Molecular Theory
Multiple Choice
Which statement best describes the behavior of atoms in a gas according to the kinetic molecular theory?
A
Atoms in a gas are fixed in place and vibrate about their positions.
B
Atoms in a gas move slowly and are strongly attracted to each other.
C
Atoms in a gas move rapidly and randomly, with negligible attractive forces between them.
D
Atoms in a gas are closely packed and only rotate in place.
Verified step by step guidance1
Recall that the kinetic molecular theory explains the behavior of gas particles based on their motion and interactions.
Understand that according to this theory, gas particles (atoms or molecules) are in constant, rapid, and random motion.
Recognize that the theory assumes negligible attractive or repulsive forces between gas particles, allowing them to move independently.
Note that gas particles are far apart compared to their size, so they are not fixed in place or closely packed.
Conclude that the correct description is that atoms in a gas move rapidly and randomly, with negligible attractive forces between them.
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