Science Proposal

TITLETo mea sealed go on tightness of a LiquidOBJECTIVEThe labour of this physical science experiment is to use a home(prenominal) single- smooth weighing shell to straight away appreciate the surface tensity of a liquidINTRODUCTIONSurface tautness is defined as the quantity of energy inevitable to increase the surface am office of a liquid by a w trap amount . The unit for Surface tension is verbalized in joules / square meter or (J /m2 . excessively the units nominate be expressed as force per unit length , newton / meter (N /m . at generation , when the forces are very(prenominal) little(a) , surface tension is expressed in milli-newton per meter (mN /m - 1 mN is 1 /1000 NThe molecules of the liquid seduce each other and forces deck up between them . This is the enthalpy bonds that exert the forceThis experim ent makes use of a single dig balance to measure the force (surface tension ) that is exerted on a chivy , which is floating on the surface of the liquid ( wet . The acicular leaf is to the balance and the force that is required to educe the chivy out of the pee is measured . The surface tension of the water provides the resistance . From these measurements , we calculate the surface tension of waterMaterials and EquipmentTo piddle a domestic single-beam balance (see Figure 1 in the experimental Procedure section , the following is neededA beam which foundation be made up of a drinking wheat pluck , cardboard or even a plastic scalepivot (e .g , a pin or nail2 jumps of equal height - in this fictional character , we used two books which were arranged back-to-back with a small space between them pan for weights which are made from the negligee blowsNeedle .

If a suitable harry is not available then a 5 cm length of straightened clip fit can also be usedthread (for attaching pan and needle to balanceSmall bit of clay sculpture clay to balance the empty panWater bowlliquid detergentweights (common pins , drops of water from an eyedropperCalibration equipment , like a 10 ml graduated cylinderExperimental ProcedureConstructing a (refer to Figure 1Construct the beamSelect a material that is strong enough to support a a couple of(prenominal) grams of weight on some(prenominal) endsMark the center level for the fulcrum . later marking the centre point drill a fixture for the fulcrum or simply push button it through . Make sure that the bean needs to go around freelyAt the end of each beam , make holes and attach lopes or threa dsPush the fulcrum through the center hole of the beam , and place it on the supportsConstruct the pan - it can be made from an aluminum foil or a easy kitchen light weight rap . Attach this pan with leash strings as shownAttach the needle with the thread and let the needle hang horizontallyMeasurement of Surface tensionAttach the pan on one beam and the needle on the other beamPlace the container of water below the needle to submerge the needle into it...If you emergency to get a blanket(a) essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper