Free Chromatography Essays and Papers

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Free Chromatography Essays and Papers

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    experiment, we worked with paper chromatography. Before discussing the experiment in full detail, we must first review what exactly paper chromatography is. Paper chromatography is a certain technique used for separating different mixtures. It uses a specific type of paper made up of cellulose, and has a solution that separates the mixture into the multiple substances that make up that mixture1. Paper chromatography can also test the purity of the mixtures as well2. Paper chromatography was first developed

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    understand the process of chromatography by separating different mixtures. In one experiment, students had to separate b-carotene and chlorophyll in spinach. In the seconds experiment, students were expected to separate the different colors or compounds within several dyes. In this second experiment, students not only took a paper chromatography of the different dyes, but also of the spinach juice. Furthermore, students also calculate the Rf values for the paper chromatography experiment; students collected

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    Goal of this project is to use paper chromatography to see which dyes are used in the coatings of your favorite colored candies. Why do different compounds travel different distance on the piece of paper? How is an Rf value useful? What is chromatography used for? Candy with colored coatings- Skittles and M & M’s At least 30 strips of paper- coffee filters or chromatography paper 3 cm by 9 cm Wide-mouth jar Pencil Ruler Tape Water Toothpicks Food

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    Amino Acids by Paper Chromatography Introduction- Proteins may be thought of natural polymers of amino acids, as the composition of proteins is of amino acids. The technique known as paper chromatography is used to separate amino acids for analysis. In this technique small spots of amino acids are introduced to a piece of porous filter paper. The bottom of the paper is then placed in a small bath of an appropriate solvent. The solvent is allowed to rise up the paper. The various amino

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    Separation of Photosynthetic Pigments by Paper Chromatography Introduction Chlorophyll is in fact only one pigment in a group of closely related pigments commonly found in photosynthesising plants called photosynthetic pigments. This can be demonstrated by extracting the pigments from leaves with acetone and separating them by means of paper chromatography. With a bit of luck five pigments can be identified: chlorophyll a (blue-green), chlorophyll b (yellow-green), xanthophylls (yellow)

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    Determining the Identity of Unknown Substances by using the Rƒ Factor found with Chromatography Paper Purpose To separate molecules that are attracted to one another using the principles of intermolecular forces as well as a scientific ratio to find the identity of unknown substances. Theoretical Background Chromatography corresponds to the solubility of substances in a mixture, as well as, its ability to separate in different solvents. The level of separation is measured by a relative

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    experiment was to determine if green light had less ability to absorb than red light in spinach leaves. This was done by separating the photosynthetic pigments (chlorophyll a, chlorophyll b, carotene and xanthophylls) from one another using paper chromatography. The separated pigments were then analyzed for their absorption spectrum using a spectrographometer. When the data was graphed it clearly showed the higher rate of red light absorption over green light. These results along with previous research

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    The chromatography paper is a very long molecule (a polymer) in which thousands of rings of six atoms are covalently bonded together into long chains which form tiny tubes within the paper. The water molecule has been spilt leaving oxygen between each ring The long chains are held together by side-to-side hydrogen bonding(O-H) between the chains, so there is also weak dipole-dipole moment. These side by side long chains are called sheets of cellulose. The sheets are held one on top of the other

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    one was conducted to show the separation of plant pigments using a process called paper chromatography. The significance of this lab was to show different types of pigments and discover which pigments would have the highest band along the filter paper. Experiment one of the lab exhibited that chlorophyll a (figure 1) would display the highest band of pigments on the filter paper when using the paper chromatography process rather than chlorophyll b, xanthophyll and carotenoids showing higher bands

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    plants because of the interaction with light to absorb certain wavelengths. During the lab, the analysis of spinach pigmentation during photosynthesis was performed to separate plant pigments with paper chromatography. The paper chromatography two phases are: stationary phase and the mobile phase. The paper serves as the absorbent for the stationary phase and acetone is used for the mobile phase to help pull the pigments up the page. Once the analysis of spinach pigmentation during photosynthesis

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