Conductivity Lab | Did conduct | Did not conduct | Solid sodium chloride | | | Solid sucrose | | | Distilled water | | | Alcohol | | | Tap Water | | | Distilled water and sodium chloride | | | Distilled water and sucrose | | | Alcohol and sodium chloride | | | Alcohol and sucrose | | | Questions: 2). Did any of the liquids conduct an electric current? If so‚ which one(s)‚ and please explain why or why not thoroughly? The tap water contains ions
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higher resolution and more light‚ you need to put more than one mirror together and make them work together‚” explains Robert Angel‚ a professor of astrology at the University of Arizona (Giant Mirrors to Capture the Universe). Just as we learned in our lab‚ we need a good source of light for something to become clear. The mirrors that are used for the telescope cause the light to be reflected off of one mirror onto the other which then create a clear image from the large convex lens. “Because these
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Name______________________ Group_____ Gravity Lab Computer Name________________________ Procedure: 1. Search “My Solar System” in the browser. This will find a site with this URL: http://phet.colorado.edu/en/simulation/my-solar-system Go to that link and click on “Run Now!” Click the “Show Grid” box on the right of the screen. Drag the slider from “Fast” all the way over to “Accurate”. At the bottom‚ select “3” for the number of bodies. Then fill out the data table to
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said to be in "thermal equilibrium". Apparatus -1 glass thermometer * calorimeter * stop watch * and hot water Procedure- 1) we took hot water from the lab We put it into a calorimeter and put a glass thermometer into it. 2) We measured the intial temperature to be 81 degree celcius. 3) Then we recorded the temperature every 2 mins. 4) And continued doing so for 30 mins. Controlling the
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Objective: The objective of the lab is to separate the caffeine samples we are using‚ using thin layer chromatography. The solvent we are using for the separation is 3:1 mixture of Chloroform and Acetone. Principle: Thin layer chromatography (TLC) is an important technique that is useful for separating organic compounds. TLC is often used to monitor the progress of organic reactions and to check the purity of products. Separations in Thin layer chromatography involve distributing a mixture of
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RER of 0.7 means that carbohydrates are being used for fuel‚ and a ratio of 1.0 means that only fatty acids are being used for fuel; of course‚ values can fall between. Methods: To observe the effects of prolonged exercise on the metabolic system the lab subject needed to walk on the treadmill at a rate that kept his heart rate at 60% of his maximum. The
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William Perez Cell Biology 2440 Lab on protein Myosin Proteins are chains of amino acids that perform the most important functions in living organism. Every protein will contain an amino group‚ carboxyl group‚ a different R group and an alpha carbon with two hydrogens. There are nine types of functions proteins can have‚ enzymes‚ motor‚ receptor‚ structural‚ storage‚ transport‚ signaling‚ and special purpose proteins(antibodies). There are four levels of protein structure‚ primary‚ secondary
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How many will it hold Benchmarks Covered (Learning Objective) SC.8.N.1.1 Define a problem to plan and carry out scientific investigations. SC.8.P.8.2 Differentiate between weight and mass‚ recognizing that weight is the amount of gravitational pull on an object and is distinct from‚ though proportional to‚ mass. Research Question/Problem - Which type of pasta noodle would hold the most pennies if we were to tape them to two stools 16 cm apart‚ dropping pennies into a cup tied around the noodle?
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Hanging at a Constant Determining the effect mass has on acceleration Block 5 11/25/12 Purpose: The purpose of this lab is to determine the effect of additional mass added to a cart’s existing mass‚ without changing the applied force‚ on the acceleration of the cart. We will test this effect by hanging a constant mass to a cart and use a computer program‚ LoggerPro‚ to calculate the acceleration which is expressed through the
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Introduction The purpose of this lab is to understand how each offspring inherits its genotype and how its phenotype reflects it. Sex chromosomes determine the sex of the offspring‚ and the autosomes consist of all the other chromosomes that determine phenotypic traits. Dominant traits are the genes that are expressed‚ while the recessive traits are masked by the dominant traits. We used Drosophila melanogaster (fruit fly)‚ mutating the female fruit fly with a scalloped gene to change the phenotype
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