AP®︎ Chemistry: Topic 3.5 Flashcards

Master key terms and definitions for Topic 3.5 of AP Chemistry – Kinetic Molecular Theory to help you prep for quizzes and the AP exam.

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Term

Continuous Random Motion

Definition

All particles in a sample of matter are always moving in random directions.

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Continuous Random Motion
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All particles in a sample of matter are always moving in random directions.

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Elastic Collisions
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Collisions in which particles transfer energy without any net loss of total kinetic energy.

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Negligible Particle Volume
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Gas particles occupy very little space compared with the total volume of the container.

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No Intermolecular Forces in an Ideal Gas
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Ideal gas particles neither attract nor repel one another between collisions.

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Particle Motion and Gas Pressure
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Faster particles collide with container walls more often and more forcefully, increasing pressure.

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Kinetic Molecular Theory
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A model describing gases as tiny particles moving randomly with negligible volume, no forces, and elastic collisions.

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Average Kinetic Energy and Temperature
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The average kinetic energy of particles is directly proportional to the Kelvin temperature.

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Maxwell-Boltzmann Distribution
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A graph showing particle energies or speeds, where higher temperature broadens the curve and shifts it right.

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Average Kinetic Energy Depends Only on Temperature
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At the same temperature, all gases have the same average kinetic energy.

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