"Chromatography of food dyes" Essays and Research Papers

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    Column Chromatography Lab

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    In paper chromatography‚ some compounds in a mixture travel almost as far as the solvent does; some stay much closer to the base line. The distance travelled relative to the solvent is a constant for a particular compound as long as you keep everything else constant. Some compounds may travel farther than others because they may be composed of more components‚ thus traveling farther. For example‚ black is composed of every color of the rainbow‚ while yellow is composed of less colors. As a result

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    understand that because substances have different properties‚ such as mass‚ that can be separated by chromatography. In our experiment‚ we chose 4 different color source to separate in water. We made sure that all the sources were water soluble because only polar substances will dissolve in water. We chose a black wet-erase marker‚ a red marker‚ a green marker‚ and mixed food coloring to test. The chromatography paper was split into 4 sections‚ about 2 cm above the bottom edge and evenly spaced out. Each

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    Separation Of A Dye Mixture Using Chromatography ********* AP Chemistry (3rd Block) Fauquier High School 8/ 31/ 13 ABSTRACT: The Rf values of seven known color dyes and three unknown samples were observed in order to compare results and discover the hidden identities of the three samples. Three solvents‚ H2O‚ Isopropyl alcohol‚ and a 2% NaCl solution‚ were introduced to the dotted chromatography strips to show three different ratios for each dye on account

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    Chromatography is the separation of compounds to allow us to see the different colours of that compound‚ for instance we may use chromatography in a school lab to see the real colour compounds of plants and grass‚ by using chemicals such as acetone we it will allow the object to break compounds and thus we can see the true colour of the grass. In today’s society there are many real world applications which use the chromatography technique in their line of work‚ an example of one of these applications

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    Blue Dyes Lab Report

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    following: The unknown component traveled at a distance similar to the spice time blue dye. However‚ there are a few limitations within this experiment. The accuracy of the length of the component was difficult to record. The ruler that we used was degraded and thick‚ making it hard to read the length. The dyes could also cause error to occur. Everything has an expiration date‚ depending on how old or how new the dye is‚ it could affect the outcome. 1. Why is it important to trace the solvent line

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    exchange Chromatography Ion exchange chromatography is a process for separating proteins and other molecules in a solution based on differences in net charge. Ion Exchange Chromatography relies on charge-charge interactions between the proteins in your sample and the charges immobilized on the resin of your choice. Ion exchange chromatography can be subdivided into cation exchange chromatography‚ in which positively charged ions bind to a negatively charged resin; and anion exchange chromatography‚ in

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    Amino Acid Chromatography

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    Abstract In this experiment paper chromatography was used in order to identify two unknown amino acids using eight known amino ones. The two unknown ones were identified by comparing the distance they travelled up the chromatography paper and their Rf values to the corresponding values of the other eight known amino acids. The unknown amino acids identified were Glycine and Methionine. Introduction Proteins in cells are important in many ways. There are different types of proteins such as

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    Candy Chromatography: What makes those colors? The point of doing this project is to use paper chromatography to see which dyes are used in the coatings of your favorite colored candies. Chromatography is a technique for separating mixtures. Chromatography can be used to separate specific components from a complex mixture‚ based on molecular size or other chemical properties. It can also be used to identify chemicals‚ for example crime scene samples like blood‚ drugs‚ or explosive residue. Highly

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    Candy chromatography My experiment is called candy chromatography. This project is mainly about the colors that are mixed with other colors to make candy markers Koolaid and much more. I think that only the color of the candy is going to show up on the coffee paper. I think that threw the entire experiment the color in the candy is going to show up the entire time. I think this is going to happen because most of the colors are solid colors. The material and equipment used was a sample of candy

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    their mouths and a happy‚ satisfied grin on their faces. The reason for conducting the research is to know how the colors of our favorite candy-coated sugary rewards came to be and that method of knowing is what we call “Candy Crhomatography”. Chromatography by definition according to Webster’s dictionary means “ a method for separating the constituents of a solution (gas or liquid) by exploiting the different bonding properties of different molecules”. In this case‚ the molecules being broken down

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