Station #1: Water and Ice Station Observations on a frozen and a normal can of soda being placed in a pool of water: The normal can of soda Is alright The frozen can of soda Is compressed Observations on Ice cubes being poured in ethanol: Ice cube in ethanol The ice cube floated Ice cube in water The ice cube sank Station #2 Cohesive properties of Water Observations on waters cohesive properties using a paper clip and a coin: Paper clip The paper clip stayed on top for a few
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The Effects of Harmful Algal Blooms and Eutrophication Introduction Eutrophication‚ by definition‚ is a process where bodies of water receive excess nutrients that stimulate excessive plant growth. Eutrophication results from continuous pollution in the form of agricultural run-offs or sewage outflows. Fertilizers and sewage are both rich in nitrogen and phosphorus‚ which are both nutrients essential for plant growth. However‚ these nutrients are typically low in content in aquatic environments
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LAB Report #3 Introduction: In this lab we have focus on Isolation of bacteria from environment. Microorganisms are found throughout the environment: in the air and water; on the surface of any object such as clothes‚ walls‚ furniture; in soil and dust; and on and in our own bodies (skin and mucous membranes). In order to demonstrate the ubiquity and diversity of microbes in the environment‚ samples from immediate areas of the environment and/or from your body will be obtained and cultured
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Water Wheel Work‚ Power‚ and Efficiency Pre-Lab Preparation: Purpose: The purpose of this lab was to create an efficient water wheel that would produce a productive time in lifting the cup of nuts and bolts that was attached to the pipe used in rotating out water wheel. The more efficient our wheel was the better the time we would have in lifting our cup. We were then able to observe the work that was needed to turn the axel‚ the time that is taken to bring the cup of washers to the axel‚ and
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Lab Title: "The Effect of Salt on the Boiling Point of Water" Lab Question: How does adding salt to water affects it’s boiling point? Prediction : In this paper‚ a newly proposed model based on solvation between pure solvent and salt for prediction of salt effect on vapor–liquid equilibria is presented by using only the vapor pressure depression data of pure solvent+salt systems that compose the mixed solvent with salt system Materials : 200 mL of distilled water‚ 2 beakers
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HOW NORTH CAROLINA IS EFFECTED ECONOMICALLY BY WATER POLLUTION About 80% of the State’s surveyed freshwater rivers and streams have good water quality that fully supports aquatic life uses‚ 17% have fair water quality that partially supports aquatic life uses‚ and 3% have poor water quality that does not support aquatic life uses. Ten percent of the surveyed rivers do not fully support swimming. The major sources of impairment are agriculture (responsible for 53% of the impaired river
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Lab Report: Stoichiometry Lab Oct. 27‚ 2011 Claire Elizabeth Lab Partners: Hannah Signature:___________________ Introduction- Baking soda and vinegar are two common materials found in almost every household. That‚ plus the fact that all the starting and finishing materials are non hazardous and safe‚ is why this is one of the first chemical reactions that many people are exposed to The purpose of this experiment tests which of the two reactants (vinegar and baking soda) is the limited
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Water Testing Lab Conclusion In this lab‚ chemical tests were used to check for the presence of calcium‚ chloride‚ and sulfate ions in water samples. To do this‚ the testers started with five samples: a reference‚ a sample of only the chemical being tested for‚ a control‚ distilled water‚ two home water samples‚ and a school water sample. To test for the ions in the water‚ a chemical that would react with the ion and create a precipitate was added. If the precipitate was not easily visible‚ a
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The purpose of this lab was to model the significant differences in density that oceans experience when glaciers and polar ice caps melt. It demonstrated that the variation in density greatly affects salt water. I discovered that the increase in freshwater causes a decrease in density. I made three claims. First‚ the higher the salinity of the water is‚ the denser it will be. This was shown in my data by the fact that‚ with 0mL of fresh water‚ the density was 1.108 g/mL For every milliliter of fresh
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10/24/2013 LAB TITLE: Single Replacement Reaction of Solid Copper with Silver Nitrate PURPOSE The purpose of this lab is to: • Observe a single replacement reaction‚ and • Calculate the mole ratio of silver (Ag) to copper (Cu) in the reaction MATERIALS • Copper wire (30 cm) • Large test tube • 250 ml beaker • Silver nitrate (AgNO3) powder • Dilute AgNO3 solution • Distilled water • Electronic balance • Glass stir rod • Watch glass PRE-LAB DISCUSSION A single
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