Surface Tension :: essays research papers fc

Surface TensionMy problem was to find out how to test or measure line up tension. Ithink the reason of some of the force in get up tension is cohesion andgravity. Surface Tension is the condition exist at the free surface of aliquid, resembling the properties of an elastic skin under tension. The tensionis the firmness of purpose of intermolecular forces exerting an unbalanced inward pull onthe exclusive surface molecules this is reflected in the considerablecurvature at those edges where the liquid is in contact with the wall of avessel. Because of this property, certain insects screwing stand on the surface ofwater. A razor blade can also be supported by the surface tension of water. Therazor blade is not floating if pushed through the surface, it sinks throughthe water. More specifically, the tension is the force per unit length of anystraight line on the liquid surface that the surface layers on the adversarysides of the line exert upon each other. The tendency of any li quid surface isto become as small as possible as a result of this tension, as in the case ofmercury, which forms an almost round ball when a small quantity is placed on ahorizontal surface. The near-perfect spherical manikin of a soap bubble, which isthe result of the distribution of tension on the thin film of soap, is anotherexample of this force surface tension alone can support a needle placedhorizontally on a water surface.Surface tension depends mainly upon the forces attraction between theparticles within the condition liquid and also upon the gas, solid, or liquid incontact with it. The molecules in a drop of water, for example, attract eachother weakly. Water molecules well in spite of appearance the drop may be thought of as beingattracted equally in all directions by the surrounding molecules. However ifsurface molecules could be displaced moderately outward from the surface, theywould be attracted back by the near by molecules. The energy responsible forthe phenomenon of surface tension may be thought of as somewhat equilivantto the work or energy required to remove the surface layer of molecules in aunit area. In comparison, organic liquids, such as benzene and alcohols, havelower surface tensions, whereas mercury has a higher surface tension . Anincrease in temperature lowers the net force of attraction among molecules andhence decreases surface tension.Surface tension is also viewed as the result of forces acting in theplane of the surface and tending to minimize its area. On this basis.