Question

what is the kinetic molecular theory

Answer 1

Kinetic Molecular Theory statesthat gas particles are in constant motion and exhibit perfectly elastic collisions.Kinetic Molecular Theorycan be used to explain both Charles' and Boyle's Laws. The averagekineticenergy of a collection of gas particles is directly proportional to absolute temperatureonly.By the late 19th century, scientists had begun accepting the atomic theory of matter started relating it to individual molecules. The Kinetic MolecularTheory of Gases comes from observations that scientists made about gases to explain their macroscopic properties. The following are the basic assumptions ofthe Kinetic Molecular Theory:
1.The volume occupied by theindividual particles of a gas is negligible compared to the volume of the gas itself.
2.The particles ofan ideal gas exert no attractive forces on each other or on theirsurroundings.
3.Gas particles are in a constant state of random motion and move in straightlines until they collide with another body.
4.The collisions exhibited by gas particles are completely elastic; when two molecules collide, total kinetic energy isconserved.
5.The average kinetic energy of gas molecules is directly proportional to absolute temperature only; this implies that all molecular motion ceases if the temperature is reduced to absolute zero.

Answer 2

The kinetic theory of gases describes a gasas a large number of submicroscopic particles (atoms or molecules), all of which are in constant, rapid, random motion. The randomness arises from the particles' many collisions with each other and with the walls of the container.

Kinetic theory explains the macroscopicproperties of gases, such as pressure, temperature, viscosity, thermal conductivity, and volume, by considering their molecular composition and motion. The theory posits that gas pressure results from particles' collisions with the walls of a container at different velocities.