Kinetic Molecular Theory - Edubirdie

University:
University of Arkansas
Course:
CHEM 1203 | Chemistry for Majors I
Academic year:

2019
Views:

483

Pages:

1
Author:

BobN

The kinetic molecular theory attempts to explain why gases behave the way they do. There are three basic postulates of the kinetic molecular theory applied to gases. 1. The size of gas particles is negligibly small compared to the volume the gas occupies. 2. The average kinetic energy of a gas particle is directly proportional to its temperature in Kelvin. 3. The collision of one particle with another or with the walls of its container is completely elastic. It's assumed that the gas particles do not exert intermolecular forces on one another in between collisions. In an elastic collision, the momentum and kinetic energy are conserved. When you think of an elastic collision, think of two billiard balls colliding: they bounce off each other without deforming. By comparison, in an inelastic collision, kinetic energy is not conserved. This would be like two balls of clay colliding and sticking together. As we discuss the scientific laws that govern how the properties of gases are interrelated, we'll see how the kinetic molecular theory attempts to explain these relationships.

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