Surface Tension of Water Research - 927 Words

My science fair project is on the surface tension of water and what affects the surface tension of water. The question that I am going to ask is how does temperature and salinity of water affect the surface tension of the water. My hypothesis is that the colder and the saltier that the water is, the stronger that the surface tension of the water will be. Some of the background research that I have done has explained to me that the surface tension of water is a property of a liquids surface that can cause it to resist external forces. Surface tension is caused by the property of cohesion which is intermolecular attraction between two or more similar molecules. The molecules on the surface of the liquid in this case water have no†¦show more content†¦The relationship between the pressures involved in surface tension measurement is very important in defining their properties. There are several different forms of surface tension which means that there are many different wa ys of measuring surface tension in terms of data applications and analyzations. The most commonly known way is called the du Nouy ring method developed in 1925 by Pierre Lecomte du Nouy which is a method which uses a force to lift a platinum ring from the surface of a liquid and measuring the amount of force that was required to do so. I did much research into the ideas and theories behind surface tension and what I found most interesting was the different ways of measuring the surface tension and how the surface tension cannot bond with air. Bibliography: * Coffey, J. (n.d.). Surface Tension. Universe Today — Space and astronomy news. Retrieved November 9, 2011, from http://www.universetoday.com/81655/surface-tension/ * Surface tension. (n.d.). Attension - Precision made simple. Retrieved November 9, 2011, from http://www.attension.com/surface-tension.aspx * Viscosity-Surface Tension-properties of liquid. (n.d.). Welcome to City Collegiate. Retrieved November 9, 2011, from http://www.citycollegiate.com/viscosity.htm * ayers, a. (n.d.). What Is Surface Tension?: Hydrogen Bonds, Organized Water and Maximized Entropy | Suite101.com. Suite101.com: Online Magazine and Writers Network. Retrieved November 9, 2011,Show MoreRelatedEssay on Biology Lab for virtual school.. Lesson 1.04774 Words   |  4 Pages October 19, 2013 Lesson 1.04 Properties of WATER Problem Statement: What effect will adding soap to water have on surface tension? Research: When an object falls onto the surface, it has to push the water molecules apart. If the effect of the weight of the object is insufficient to match the attractive forces between molecules in the surface layer, the object will not enter the surface. www.exploration.edu/rohn/bubbles/soap.html Molecules ofRead MoreSurface Tension1209 Words   |  5 PagesProcessed 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 | Read MoreWater, Ph, And Buffers738 Words   |  3 PagesWater, pH, and Buffers Exercise 1: Water and its Unique Properties Data Table 1. Needle Observations. 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