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4 days ago · Gas, one of the three fundamental states of matter, with distinctly different properties from the liquid and solid states. The remarkable feature of gases is that they appear to have no structure at all. They have neither a definite size nor shape, whereas ordinary solids have both a definite size.
If a given gas sample is allowed to occupy a larger volume, then the speed of the molecules does not change, but the density of the gas (number of particles per unit volume) decreases, and the average distance between the molecules increases.
Gases consist of large numbers of molecules that are in continuous, random motion; The volume of all the molecules of the gas is negligible compared to the total volume in which the gas is contained; Attractive and repulsive forces between gas molecules are negligible
Kinetic-Molecular Theory. The kinetic-molecular theory is a theory that explains the states of matter and is based on the idea that matter is composed of tiny particles that are always in motion. The theory helps explain observable properties and behaviors of solids, liquids, and gases.
A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide).
Dec 4, 2021 · The kinetic molecular theory of gases ( KMT or simply kinetic theory of gases) is a theoretical model that explains the macroscopic properties of a gas using statistical mechanics. These properties include the pressure, volume, and temperature of a gas, as well at its viscosity, thermal conductivity and mass diffusivity.
Learning Objectives. State the major concepts behind the kinetic molecular theory of gases. Demonstrate the relationship between kinetic energy and molecular speed. Apply the kinetic molecular theory to explain and predict the gas laws.
