senior scienceSenior Science Assessment Task One Written Task: Open Ended Investigation Aim: Compare the solubility of various forms of panadol at body temperature in different pH conditions Hypothesis Panadol 6 will dissolve faster than any other panadol and all type of panadol will have increase solubility in acidic conditions Apparatus and Materials * 54 alcohol swabs * Glass thermometer * 600mL pyrex measuring jug (heat resistant‚ transparent‚ glass‚ volumetric measuring instrument)
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Ferrocene and Column Chromatography Introduction: The intention of this lab is to analyze the formation of acetylferrocene using column chromatography. The Friedel-Crafts acylation reaction created acetylferrocene and diacetylferrocene‚ using phosphoric acid as a catalyst for the reaction between acetic anhydride and ferrocene (once applying heat). During column chromatography‚ a solution is passed through a filtration system of silica‚ sand‚ and cotton. This creates colored or colorless bands‚ dependent
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------------------------------------------------- Topic: Spot fixing in cricket matches. 1. Introduction Spot fixing in sports is the practice of fixing a specific segment within a match. It usually involves a player agreeing‚ prior to the game that he will perform in a particular way. In cricket this might involve a batsman agreeing to only get a certain number of runs‚ or a bowler bowling a consecutive number of wide balls in a particular over‚ etc. Spot fixing stands in contrast to match fixing which
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types of procedures were carried out over the course of this experiment: tube inoculation and plate inoculation. We started with plate preparation. Three different lysogeny broth‚ or LB‚ agar plates were prepared for E. coli growth every other week: a control where water was used‚ one for triclosan‚ and one for streptomycin. Using an inoculation loop‚ E. coli was transferred from the test tube to the agar plate. This was done to each plate twice‚ creating a grid-like pattern of bacteria growth. A small
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I. Product Background A. Introduction In this highly luxurious extravagant world‚ food and other beverages has always been one of the things which maintain the mainstream of life. Aside from being one of the basics for survival‚ gatherings are also made perfect by food preparation and stress is now often associated with food. This activities show that food intake nowadays is far different from the conventional times. Furthermore‚ this lavish lifestyle most of the people have results in an
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three weeks I observed the difference between how students live on campus and how students live off campus. The reason behind my decision to observe this was because I was curious to see the pros and cons of both ways of living. However‚ the last two years I was living on campus so instead of studying my way of living on campus I studied my five roommates and how they function daily. For one week I lived off campus with some friends and observed how they function and perform tasks on a daily basis. My
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strawberry (fresh or frozen and thawed) 1 banana half 10 ml DNA extraction buffer* 2 Coffee filters Ice cold 95% ethanol 1 small beaker 2 Test tubes Wooden coffee stirrer *To make the extraction buffer‚ 100 ml of shampoo (without conditioner) was mixed with 15 g of NaCl and 900 ml of water. Procedures Used in Experiment Once all materials were gathered by group members‚ each individual group began their experiment. The first step was to place the strawberry or banana in the zip lock bag and
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Lab Conclusion Guidelines A good conclusion should contain all of the following parts a) You should state what experiment was performed‚ and show any necessary reaction schemes. The reaction schemes should include molecular weights and any other important physical data for the reagents and products. Ex. Cyclohexanol was oxidized to cyclohexanone using sodium dichromate in the presence of sulfuric acid. * Note: you can download a free version of a structure editor from ACD labs‚ the PC version
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In the early 1960s‚ the emergence of the theory of plate tectonics started a revolution in the earth sciences. Since then‚ scientists have verified and refined this theory‚ and now have a much better understanding of how our planet has been shaped by plate-tectonic processes. We now know that‚ directly or indirectly‚ plate tectonics influences nearly all geologic processes‚ past and present. Indeed‚ the notion that the entire Earth’s surface is continually shifting has profoundly changed the way
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Abundance and Extraction of Metals 1. a Mineral - A mineral is a naturally occurring inorganic solid‚ with a definite chemical composition‚ and an ordered atomic arrangement. b Ore - Deposit in the Earth of valuable metals contained in minerals. c Economic Natural Resource Deposit - This is a natural deposit of something that is economically viable to mine‚ refine and sell. Hence the deposit must be big enough to last for a large period of time‚ so that it will make enough money for the
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