State of Matter

Surface Energy We know, a tension or force always exists on the surface of a liquid and this tension tends to decrease the area of…

Explanation of Surface Tension by Laplace’s molecular theory of surface tension To explain the phenomenon of surface tension Laplace gave a molecular theory which is…

Molecular range: We know, cohesive force is inversely proportional to the square of distance between the molecules. As distance increases, the force decreases rapidly. It…

The force with which the surface molecules are held simultaneously is called surface tension. Theoretical Definition: “If a straight line is considered on the surface…

Cohesive force: We know a certain material consists of some molecules. The attractive force acting between molecules of the same materials is called cohesive force.…

Adhesive Force: If a material is kept in touch with another material then there exists a mutual attractive force between the molecules of the two…

Surface tension effect can be easily demonstrated by an experiment given below- When a circular ring of metal wire is dipped inside a soap-liquid and…

Surface Tension All liquids have a common property – liquid surface always tries to form smallest area by shrinking. The force in the liquid for…

Stokes Law: “The force required to move a sphere through a given viscous fluid at a low uniform velocity is directly proportional to the velocity…

Viscosity is sometimes called cohesiveness of fluid. Again someone calls viscosity the intrinsic friction of fluid. Because the nature at viscosity force is almost that…