small amount of the unknown (approximately the tip of the spatula was used for all the pigments) was added into each clean dry test tube. For the first test 1 mL of 3 M of HNO3 was added. As soon as the acid came into with the solid‚ the pigment was observed to dissolve while also turning the solution into a pale clear colour. The same amount was used for the HCl reagent. As soon as the acid touched the pigment it yielded in a clear solution (solid dissolved after a few shakes). When the KI was added
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4.d.p 0.0426 0.0606 0.1667 0.1538 0.1250 0.1176 0.0976 It is evident from the graph and the table above‚ that as the temperature is increased‚ the amount of light passing through the tested solutions is decreased‚ and therefore the amount of pigment released from the beetroot samples is increased. The results produce a graph with negative correlation‚ a curve that has a negative gradient. The graph shows that as the temperature is increased‚ the colorimeter reading is decreased. The structure
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example‚ the Pigment division in Core category had the role of cash provider. Therefore‚ it was difficult for this division to access to capital‚ major investment would violate their mandate‚ and payback period was set at two to three years. However‚ the Pigments division head recently proposed the plan for major investment in comprehensive modernization of a manufacturing plant in Newport which was the only global source for Sfr 130 million in sales of Quinacridone (HPP) pigments. Ciba needed
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Trippple Award Specification (4BIO) Examination in 2012 Trippple Award Specification Key words are underlined in red. Practical work is printed in italics. Section 1: The nature and variety of living organisms Characteristics of living organisms include; M ovement R espitation S ensitivity G rowth R eproduction E xcretion N utrition In addition‚ all living organisms contain nucleic acids (DNA) and have the ability to control their internal conditions. Finally‚ all living
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This experiment is concerned with identifying photosynthetic pigments found in spinach plants and determining the spectrum of light each absorbs. By using paper chromatography‚ different pigments of spinach leaves can be separated. The knowledge gained in this experiment is relevant to understanding how the process of photosynthesis works. A Real-world application for this includes the harvesting of clean energy sources‚ as scientific advances have led the way to artificial photosynthesis on the
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Scientific Method: 1) What is the scientific method? The scientific method is a way to ask and answer scientific questions by making observations and doing experiments. 2) What are the steps of the scientific method? Ask a Question‚ Do Research‚ Hypothesis‚ Test Your Hypothesis by Doing an Experiment‚ Analyze Your Data‚ Draw a Conclusion‚ And Communicate Your Results. 3) Why do scientists use the scientific method? What are the benefits of using it? Scientists use this method to have a formula
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HSC Chemistry First Hand Investigation 2009 Scientific Report Aim: To carry out a fist hand experiment in the extraction of red cabbage pigment‚ use this extracted pigment to standardize against know pH’s‚ test 5 household items to determine the possible pH of these items by using the standardization and assess the pigment’s ability to be used as a Universal Indicator. Risk Assessment: When dealing with fire‚ the Bunsen burner should always be switched to the safety flame before lighting.
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control osmosis” Aim: observe and test the process of osmosis through different kinds of methods: the weigh (potato)‚ the density (beetroot) and under the light microscope (onion). Hypothesis: according to the encyclopedia definition osmosis is the diffusion of a liquid (most often assumed to be water‚ but it can be any liquid solvent) through a partially-permeable membrane from a region of high solvent potential to a region of low solvent potential. Thus‚ this is what will happen. Teacher’s instructions:
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5.5 Candy Chromatography Background Information: Paper Chromatography is a separation tool in which pigment is put on a paper made of cellulose and water‚ and placed in a solvent‚ in this case isopropyl alcohol. Due to capillary action‚ the solvent crawls up the paper‚ separating the pigments. This technique is used to identify components of a mixture‚ even unknown ones‚ and can be used to isolate components into pure samples. Real world uses of this technique includes identifying certain biomolecules
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Contents Abstract Introduction Aim Hypothesis Material Method Results Discussion Conclusion Abstract The aim of this experiment was to see whether different temperatures will affect the cell membrane‚ thus would then releases the purple pigments out of the vacuole which causes the leakage of the purplish liquid. Background Information The outermost layer is the cell wall‚ which is present only in plant cells and is made up of a carbohydrate called cellulose and also has other protein
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