10 Test Tube Mystery Introduction: The students were handed 10 test tubes with no identification. The students were supposed to design a method in determining what chemical was in each test tube. The list of chemicals is CuSO4‚ NH4Cl‚ NaOH‚ AgNO3‚ KI‚ H2SO4‚ NaBr‚ CaCl2‚ HCl‚ and Pb(NO3)2. The students are expected to determine the chemicals using physical properties‚ litmus paper‚ solubility‚ and the process of elimination. Physical properties‚ such as the color‚ can be determined by sight. Litmus
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a smear was prepared by use a sterile transfer loop that been flamed to removes some bacteria from slant agar and placed on the slide; mixed with one drop of water and let air dried. After dried‚ heat fixation the slide by passed the slide over a flame quickly 2-3 times to stick bacteria to the slide. Next‚ the smear was sequence covered with crystal violet‚ iodine‚ 95% ethanol‚ and safranin; each reagent was rinsed with water after 1 minute. When decolorized with 95% ethanol‚ the smear was slowly
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Conclusions: We learned that some nasty stains can come out with some unorthodox products. We used on our stain Isopropyl alcohol (rubbing alcohol)‚ bleach‚ and shout. The product that did the best at pulling out stains was the Isopropyl alcohol. Isopropyl alcohol is a clear‚ colorless‚ flammable‚ mobile liquid‚ (CH3)2CHOH‚ used in antifreeze compounds‚ in lotions and cosmetics‚ and as a solvent for gums‚ shellac‚ and essential oils. It did great job at pulling stains right out of the cloth. This
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Special Report Plastic Additive: A Techno-Commercial Profile B.G. SAMPAT E-mail: bgsampat@bom3.vsnl.net.in INTRODUCTION Every activity in modern life is influenced by plastics and many depend entirely on plastic products. All these plastic products are made from the essential polymer mixed with a complex blend of materials known collectively as additives. Without additives‚ plastics would not work‚ but with them they can be made safer‚ cleaner‚ tougher and more colourful. Additives cost money
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Conclusion Shagun Mistry According to the experiment‚ the average normal heart rate of Daphnia is 20 heart beats per 12.94 seconds. There were six total trials done for Normal Heart Rate with 2 Daphnia (3 Trials each). The aim of this experiment was to measure the effect of neurotransmitters on the heart rate of Daphnia. When the adrenaline was added
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Kiwi cheese Ltd. is a New Zealand’s one of the reputed company who manufactur the various kinds of cheese. I am working in this company at certain position. As the Company’s Operations Manager and Sales Manager received an E-mail on their website regarding the enquiry of exporting the cheese to India. My Boss ordered me to create a report for Board of Directors on the ‘conduct‚ financing and settlement of finances’ on the portion of this opportunity. In this report‚ I am going to lay out certain
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OBJECTIVES : To compare the final product of two different method and ingredient and investigate the factor contributed with the final product’s appearance. EVALUATIONS TREATMENT 1 Fine texture‚ smooth‚ and even pores Thin crust TREATMENT 2 Has tunnel at the centre‚ dark brown. Soggy Thick‚ Tough and harden DISCUSSIONS Chocolate cake from first recipe gives great texture of crumb and crust of the cake. In contrast‚ the second cake give a worse texture of the crumb
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After conducting the trials for each beaker and each bag my hypothesis of each of the trials were correct. Every outcome I predicted occurred to each beaker and each bag. Beakers 1 and 2 decreased in mass while beaker 3 stayed constant. Beaker 4 actually increased in mass as well. Bags 1 and 2 increased in mass while bag 3 stayed the same. Bag 4 resulted in a decrease in mass. The results I got from this experiment do support what I predicted before the trials. Above you can see a specimen of an
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AE 6766 Project 3 Nonpremixed Flames Introduction: In order to understand the structure of non-premixed flames‚ this projects employs a type of opposed flow diffusion to generate a nearly one-dimensional an axisymmetric diffusion flame. The one dimensional character of this flame is significant because it reduces complexities compared to a 2 dimensional flame‚ which allows for manageable and practical calculations. Moreover‚ this type of flame can be generated and easily investigated in the
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Study Guide to Help with Laboratory Exam 1 Microbiology 1214 A partial study guide only. Not intended to replace the review sheets or the “Know the following” sections on your labs. These slides are not presented in any particular order. Name this Procedure Identify the two types of bacteria present by shape and gram stain. In a gram stain what is the primary stain? The mordant? The counterstain? How does this differ from a simple stain? Identify the shape and gram stain of the bacteria present
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