Multiple Choice
Which of the following best describes the motion of the particles in a piece of steel?
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7. Gases
Kinetic Molecular Theory
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According to the kinetic molecular theory, which of the following is a measure of the average kinetic energy of the particles in a sample of matter?
A
Pressure
B
Density
C
Volume
D
Temperature
Verified step by step guidance1
Recall that the kinetic molecular theory relates the motion of particles to macroscopic properties of matter.
Understand that the average kinetic energy of particles in a sample is directly proportional to the temperature of the sample.
Recognize that pressure, density, and volume are physical properties influenced by particle motion but do not directly measure average kinetic energy.
Use the relationship: average kinetic energy \( \propto T \), where \( T \) is the absolute temperature in Kelvin.
Conclude that temperature is the correct measure of the average kinetic energy of particles in a sample.
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