Physics Project Report on Capillary Action Submitted To: Prof. Manjula Srivastava Faculty‚ RLB Date of Submission: 1st‚ February‚ 2015 Submitted By: Manisha Dubey Abhya Srivastava Shipra Yadav Shalvi Srivastava Class XI-A1 2014-2015 ACKNOWLEDGEMENT “It is not possible to prepare a Project Report without the assistance and encouragement of other people. This one is certainly no Exception” I would like to take opportunity to express my humble gratitude to Prof. Manjula Srivastava for providing
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Why is surface tension associated with cohesion and not adhesion? At the surface of the water‚ there is an ordered arrangement of water molecules that are hydrogen-bonded to each other and to the water BELOW‚ not the air above the water. This has a result of pulling the water molecules “down” away from the air-water interface. 5. Use the properties cohesion‚ adhesion‚ high specific heat‚ evaporative cooling‚ expansion upon freezing‚ and universal solvent
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-many physical properties of compounds depend on the intermolecular forces: -wetting (water absorbed by matter) -surface tension -capillary action -melting and boiling points -cohesion (attraction between like molecules) -adhesion (attraction between unlike molecules) -solubility -evaporation -intermolecular forces are much weaker than covalent bonds ex. if covalent bonds are assigned a strength of 100‚ then intermolecular forces are between 0.001 to 15. -there are 3 types of intermolecular
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Cohesion is the attractive force among H2O molecules. They cling to each other and hold on. Not only does water have that property it also has Adhesion. That is the attractive force between H2O molecules and other substances. The water clings to other things. Given both these properties water can cling to a penny a lot better than other liquids. The penny couldn’t hold as many vegetable oil drops because the oil doesn’t have very good cohesion properties. If the oil can’t
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Cohesion and adhesion of distilled‚ tap‚ salt‚ and soapy H2O Purpose: to test cohesion and adhesion of distilled H2O‚ tap H2O‚ salt H2O‚ and soapy H2O Materials: -pipet -penny -distilled H2O -tap H2O -salt H2O (see step 1) -soapy H2O (see step 2) -paper towel Procedure: 1. To make salt H2O mix salt with distilled H2O 2. To make soapy H2O mix soap with distilled H2O 3. Place penny with the Lincoln side up on top of a piece of paper towel 4. Fill pipet with distilled H2O and hold it
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on Earth. One property is cohesion. The cohesion property is properly defined as the binding of water molecules by hydrogen bonds. Water has this property as a result of the chemical bonding between water. Cohesion of the strong hydrogen bonds allows the water molecules to stick together‚ almost as a unit of one. A force exerted on one of the molecules will be exerted on all of the adjacent molecules as a result of cohesion. Cohesion‚ often with the cooperation of adhesion‚ the clinging of one substance
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A paper towel which can also be known as kitchen paper is an absorbent towel made up of cellulose fibers‚ which also make up other plants like cotton and wood instead of cloth material. Although paper towels cannot be washed and used again‚ paper towels are disposable. The key to why paper towels soak up water is the cellulose fibers. Cellulose fibers are giant molecules which are made up of smaller molecules called sugar molecules (inedible) joined together. The liquid grips onto the cellulose fibers
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high specific heat due to the hydrogen bonds. Because of this‚ water requires a large amount of energy to raise its temperature by just one degree. The polar nature of water allows the water molecules to attach to one another this is called cohesion. Cohesion gives water its surface tension where the water molecules bind to each other making it difficult for the surface to be broken. b.) Water is known as the universal solvent. Its polarity allows it to ionize materials by breaking down ionic
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Processed Data: Table 1: Data in measuring the height of the water Trial | Height of water (m) | 1 | 0.032 | 2 | 0.032 | 3 | 0.032 | Average: | 0.032 | Table 2: Values for measuring the radius of capillary Temperature | 30 degrees Celsius | Density @ 30 degrees Celsius | 995.67 kg m-3 | Acceleration due to gravity | 9.8 m s2 | Height of water | 0.032 m | Surface tension of water@ 30 degrees Celsius | 7.118 X 10-2 N m | Radius of capillary tube | 4.5592825 X 10-4 m |
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electrical forces while covalent bonds are a lot stronger and are formed when atoms are forced to share electrons. Water has different properties. One is cohesion which is the attraction between molecules of a given substance. Cohesion in water molecules causes surface tension which makes the water molecules stick together. Another is adhesion which is the attraction of molecules in different substances. There are two sides to a pH scale‚ base and acid. Acids are a compound of substances that release
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