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​ Type in the content of your page Evan Newcomer Pd.8 Honors Chemistry Literature review Water is a necessity for all forms of life and it dominates the surface of the Earth in many different forms. It covers over 70% of the Earth’s surface and is in a continual cycle of evaporating and condensing or vaporizing and reliquefying. Because of this the Earth has a constant supply of water that is divided into two main categories. These categories are fresh water and salt water, but do they evaporate at the same rate? My study will investigate the difference in evaporation rates of several different kinds of water including tap, filtered, pond, rain, and ocean water. The rate that the different kinds of water evaporate (a liquid substance entering into a gaseous state) at can affect water supplies and weather patterns all around the world. Salt water or ocean water is made up of 96.5% water, 2.5% dissolved salts (chloride, sulfates, magnesium, potassium, calcium, and sodium) and various other small amounts of organic matter, gases, and elements such as boron, fluoride, and carbon. This concentration of salts and minerals in the ocean water takes up space but also gives the water molecules something to grip onto when undergoing evaporation. Because fresh water has a much lower concentration of salts and in turn less things for the water molecules to stick to it will evaporate at a faster rate than the ocean water will. Furthermore, I draw from this that because filtered water has an even lower concentration of minerals and organic matter than tap water and much less than pond or rain water( hasn’t been filtered at all) it will evaporate the quickest out of all of the kinds of water that are being tested in this experiment. When performing this study the temperature and humidity level of the surrounding area must be kept at a constant because the amount of water that can evaporate depends on how much water vapor is already in the air and the temperature of the water and air. Water needs energy in order to vaporize and evaporate and it receives this energy in the form of heat. Therefore the more heat the water takes in the more energy it has and the faster its molecules will move which will create a gaseous state (evaporation). According to my research the boiling point of tap water is 100C and the boiling point of ocean water is 103C. The boiling point of water is the amount of temperature needed to push water through evaporation rapidly. The boiling point of Salt water is higher than that of the Fresh water which means that salt water needs more energy in order to convert it from a liquid into a gas and this shows that fresh water will evaporate slightly sooner that ocean water will. In order to accurately conduct my experiment I will need to correctly use several pieces of the lab equipment. First I need to use 5 100ml beakers to measure the precise amount of each kind of water. I will also need to use a balance to measure how much salt and minerals I’m adding to the water in order to make an accurate representation of salt water. The last piece of equipment that I will need to use for my experiment is a thermometer so I can make sure that the room stays at a constant temperature throughout the course of the evaporation study. My hypothesis that the filtered water will evaporate faster because it contains more water than all of the others is supported by my research. here.

Evan Newcomer Honors Chem. Pd.8 Works Cited 1. Zimmerman, Burr; Calder, Vince; Gregorius, Roberto. “Salt, Fresh Water Evaporation Experiment /h3>.” **// Salt, Fresh Water Evaporation Experiment //****. Office of DOE ** ** < ** ** []> ** 4. Pimm, Stuart L. “Hydrosphere.” **// Encyclopedia Britannica //****. Print. ** 2009. 6. “Boiling.” //Wordnetweb.princeton.edu//. Word Net, 2009. 7. Hauter, Stan and Debbie. “Table of major and minor elements in natural sea water.” About.com. 6 Oct. 2009. 8. Gerston, Jan. “Rainwater harvesting: a new water source.” [] //Texas// //water savers,//Web. Spring 1997 9. Vogel, Sturm. “What do you measure humidity with?” //Answers.Yahoo.com//. Yahoo Answers, 7 Oct. 2008.Web. 6 Oct. 2009
 * science education, 6 October 2009. **
 * 2. Tikkanen, Amy. “Evaporation.” //Encyclopedia Britannica//. Print. **
 * 3. ** [|Mahajan], Deepti. “Sea Water.”**// Encyclopedia Britannica //**** . Print. **
 * < ** ** []> **
 * < ** ** []> **
 * 5. Tevolitz, Laurel. “ **The Question what Minerals are in Tap Water? Has Triggered a Truthful Response.” //www.Articlesbase.com .//Articles Base, 8 Nov. 2008. Web. 6 Nov.
 * 10. **Gregorius, Roberto. “Water, Salt Water Evaporation.” **// Salt, Fresh Water //**
 * // Evaporation Experiment //**** . Office of DOE science education, 6, Oct. 2009. < ** ** [] **

For the experiment I will need five 100ml glass beakers, an evaporating dish, a clay triangle, a bunsen burner, a clock and a Celsius thermometer. Begin by measuring 50ml of each type of water into a separate 100ml glass beaker. Light the Bunsen burner. Pour one of the types of water into an evaporating dish. Place the evaporating dish on top of the clay triangle that is suspended above the burner. Record the amount of time that it takes for all of the water to evaporate. Repeat the test for every type of water ten times each.
 * Procedures**

Trial 1 || Trial 2 || Trial 3 || Trial 4 || Trial 5 || Trial 6 || Trial 7 || Trial 8 || Trial 9 || Trial10 || Tap Water || || || || || || || || || || || Filtered Water || || || || || || || || || || || Rain Water || || || || || || || || || || || Pond Water || || || || || || || || || || || Ocean Water || || || || || || || || || || ||
 * Data Table**