the density of water and an unknown liquid. Density is defined as the mass of a substance divided by its volume. It is an intrinsive property of matter and is used to specifically characterize substances. III. Procedure: 1.We massed an empty 10mL graduated cylinder to the nearest .01g. 2.Then‚ we filled the graduated cylinder with 4.0-5.0 mL of distilled water‚ 3.massed it to the nearest 0.1 ml and 4. recorded the data. Then to determine the density of the unknown liquid; we repeated the steps
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The Melting Pot of Brazil Brazil is enriched with a cultural pallet of race‚ pride‚ and music. It is most known for its syncretism and blend of culture. The music could be described as soothing‚ exciting‚ or highly spiritual‚ it depends on what your listen to. However‚ Brazil has murky shadows filled with cultural rivalries‚ especially on how the country should view itself. Politics played a big role from Fascist leader Vargas to peaceful and accepting Kubitshek. With the strings of Europe‚
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Identifying Unknown Bacteria Using Biochemical and Molecular Methods Beginning of Instructor Pages Instructor Pages - - 3 Purpose The purpose of this lab is to introduce a variety of lab techniques to students working on the common problem of identifying an unknown bacterium. This lab helps students develop an understanding of the biochemical and molecular differences in bacteria and introduces the concept of identifying species based on characeristic gene sequences. Students work through
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Melting pointe determination #01 Introduction: Objective To learn how to obtain an accurate melting point using a MELTING POINT APPARATUS‚ then use them to draw eutectic curve and determine the eutectic point. Melting point of a solid is the temperature at which the solid and its liquid form are in equilibrium‚ i.e.‚ molecules move back and forth between the two states at the same rate‚ so both phases remain present. If the temperature of a solid is measured carefully as the solid is heated
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an Unknown Compound Purpose: The purpose of this experiment was to separate a mixture of two or more unknown compounds and identify them based on their melting point and reactivity with an acid or a base. Compound studied/Reactions: The organic solvent used in this experiment was methyl t-butyl ether (MTBE‚ 2-methoxy-2-methylpropane). The unknown that dissolved in the MTBE‚ but was insoluble in water. MBTE is very volatile and flammable. It was determined in the experiment that the unknown was
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Kevin Warwick’s “Into the Unknown‚” he argues that instead of measuring intelligence in a single dimensional value‚ difference aspects like culture and values should be taken into considerations throughout the process. In “The Social Imagination‚” James Flynn expresses a similar viewpoint on the study of intelligence‚ claiming that psychologists tend to overlook and underestimate the social contexts that could possibly alter the results of
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Composition Period 7 May 29‚ 2014 Mr. Fields The Great Melting Pot A melting pot refers to the idea that there are multiple races in America. Some people argue that there is or may not be a melting pot in America due to the perception of American actions. After reading and listening to both sides of the argument and explanations as to if America is or is not a melting pot‚ I’ve came to the conclusion that America is not a melting pot. Instead we are more of a of salad. Heres why!
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that can assist in identification of bacteria are their ecological habitats and more advanced methods such as genetic and molecular composition. Using various techniques one is able to distinguish and ultimately assign then genus and species of the unknown bacteria. Methods: Gram Staining: The Gram stain separates bacteria in two distinct classes and is also useful in distinguishing morphology. Through this technique one is able to identify bacteria as either gram positive or gram negative. The gram-negative
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by aseptically inoculating a tube of phenol red sucrose broth‚ and a tube of phenol red arabinose broth with the unknown culture and incubating at 37 degrees Celsius for 48 hours. After incubation‚ the two tubes were examined for color change. The eighth test was to find out if the bacteria in question had flagella. The motility test was performed by aseptically inoculating the unknown bacteria into a tube of TSA broth and allowing it to incubate for 24 hours at 37 degrees Celsius. After the TSA
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The purpose of this report is to explain the process and steps used to identify a certain microorganism referred to as the unknown. Materials and Methods A test tube with an unknown microorganism will be retrieved. Once the test tube is retrieved‚ a steak for isolation will be completed in order to produce isolated colonies of the organism on an agar plate. The unknown test tube with the bacteria is flame sterilized using a Bunsen burner. Once the bacterium test tube has been flame sterilized
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