Kaplan Nursing Entrance Exam Practice 2025 – Comprehensive Prep

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What does the kinetic molecular theory state about gas particles?

They are in fixed positions.

They are in continuous, random motion.

The kinetic molecular theory states that gas particles are in continuous, random motion. This theory asserts that the molecules of a gas are not bound to a fixed position; rather, they move freely and collide with one another and the walls of their container. This constant motion is what contributes to the characteristics of gases, such as their ability to fill a container completely and take its shape. The random nature of this movement means that gas particles will occupy any available space, demonstrating that gases do not have a definite shape or volume.

This understanding is crucial in explaining behaviors like diffusion and the low density of gases compared to liquids and solids. The idea that gas particles can collide with each other is also essential, as it highlights the interactions that occur during these random movements, impacting gas pressure and temperature.

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They occupy a definite shape and volume.

They cannot collide with each other.

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