Partner: Camille Dupiton Lab #1 Purification of a Solid: Crystallization and Melting Point Section: A61 Laboratory Exercise #1 Purification of a Solid: Crystallization and Melting Point Introduction In this lab exercise‚ we will be learning experimental techniques using glassware and other apparatuses. In order to successfully complete this lab‚ we will use techniques 1.0‚ 1.1‚1.2‚2.0‚2.1‚2.2‚ and 2.3 that are described in the Lab Manuel. In addition‚ we will
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Organic chemistry 201 | Mixed Melting Points | Determination of an Unknown Solid | | [Type the author name] | 9/15/2011 | Purpose : The main purpose of this experiment was to identify an unknown compound/substance by performing multiple experimental melting point tests. Pure and impure solids were tested to see what affect pureness/impureness had on a melting point. Background: The melting point of a solid can be used to determine the purity of the solid. Pure samples usually have
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In the process of boundaries being created the markers for these are called lines and corner points. Lines are invisible or distinctive such as a tree line creek or even a fence that was put up that would connect two corner points or terminal points. A corner point can also be along the line of there is a third party involved with that line. The corner points do not have to be on the line in its self but must have a distinctive description on exactly how it will be found. These corners are usually
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to have in the body. A substrate is the material that is being broken down. In this case‚ the substrate would be hydrogen peroxide. The catalase‚ located in the liver‚ is being used to break down the substrate. Problem The purpose of this lab is to see if the enzyme‚ catalase‚ can be manipulated. We are testing the effects of pH‚ temperature and enzyme concentration. Hypothesis Controlled When we add peroxide to the liver it will bubble a lot and break down faster. When we add peroxide
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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Lab 17 Amino Acids and Proteins Lab date 10/22/2013 12-1350 I Purpose The purpose of this experiment was to separate mixtures of II Method For a complete list of experimental procedures see prelab outline attachment #1. “For a complete list of experimental procedure see Seager‚ Spencer L. and Slabaugh‚ Michael R. Safety-Scale Laboratory Experiments for Chemistry for Today General‚ Organic and Biochemistry; Thomson Brooks/Cole‚ Belmont‚ CA‚ USA‚ 2008; pp.221-225”. III Data Part A Mass
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General College Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 A Laboratory Manual of Small-Scale Experiments for the Independent Study of General College Chemistry 50-0123-CK-02 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on the intellectual properties associated with the LabPaq’s
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Lab #1: Melting Points of Organic Compounds Report Form May 15‚ 2014 1. A “Melting Point Range” refers to the range of temperature at which a solid melts into its liquid state. 2. Pure compounds have narrow or ‘sharp’ melting point ranges‚ 1°C or less if the compound is very pure. A less pure compound exhibits a broader melting point range‚ between 3°C to 10°C as well as a depressed or lower range. 3. Crushing the sample allows for greater surface area-to-volume ratio of the powder‚ this
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and Melting of Paradichlorobenzene Purpose: Melting‚ freezing‚ and boiling points are properties that can easily be determined and help in identifying a substance. These properties can be found in chemical literature ad reference tables‚ and can be used to distinguish a pure substance from many other pure substances. In this lab you will use the pure substance Paradichlorobenzene and determine its melting an freezing points by warming and cooling a sample of the substance‚ then plotting heating
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crystals. In selecting a solvent consider that like likes like. Polar compounds dissolve polar compounds and non-polar compounds dissolve non-polar compounds. Solvent will dissolve a large amount of the impure compound at temperatures near the boiling point of the solvent the compound would be completely insoluble in that solvent at room temperature or at zero oC 2. Impure benzoic acid was dissolved in hot water. The container of solution was placed in an ice-water bath instead of being allowed cooling
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