Flame Test Laboratory Report Introduction The purpose of this lab is to observe and identify metallic ions‚ using flame tests. The traditional flame test originated when Robert Bunsen invented the Bunsen burner to test two new alkali metals he and his partner had discovered. “A flame test is an analytic procedure used in chemistry to detect the presence of certain elements‚ primarily metal ions‚ based on each element’s characteristic emission spectrum” (Flame Test 1). Using this test‚ an element
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Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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The Iron Coast is a travel writing written by Jane Gardam. Jane Gardam is a British author. She was born in Coatham‚ North Yorkshire. The writing describes the North Yorkshire coast and its landmarks including Roseberry Topping and Cleveland hills. Roseberry Topping is the name of a distinctive hill which was mentioned in the writing. The travel writing is descriptive as it creates effects and atmospheres for the reader. To achieve these effects the author uses a variety of literary techniques such
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Rebecca Nov. 2013 Kyle‚ Mat‚ Alex Lab M7 Conservation of Momentum Abstract: This experiment involved the use of gliders on an air track which nearly isolates the colliding system from external forces to create low friction totally elastic and inelastic collisions. Seven different collisions were made‚ four elastic and three inelastic. The collisions consisted of only two gliders with varying masses and speeds. Each glider cart was equipped with a flag‚ and its passage through a photogate
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Sample Short Lab Report By Charles M Borener Jr April 24‚ 2009 Kinetic Friction Experiment #13 Joe Solution E00123456 Partner - Jane Answers PHY 221 Lab Instructor – Chuck Borener Thursday‚ 11 AM – 1 PM Lecture Instructor – Dr. Jacobs Abstract In this experiment‚ we test factors which effect friction. We pulled a wood block across a surface to determine whether the surface area of the block or the type of surface effects friction. We found that the surface area of the block did not change
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does the different concentration of hydrochloric acid have to the rate of diffusion of agar that is dissolved with sodium carbonate and phenolphthalein? Introduction Diffusion is a process where the molecules intermingle as a result of their kinetic energy of random motion and is the net movement of like molecules down their concentration gradient‚ which is the energy inherent in their constant molecular motion makes them collide and careen outward from the region of higher to lower concentration
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Watching Iron Jawed Angels really opened my eyes. There was struggle between women and politics‚ but also between women themselves. It was not easy to gain these rights. This was just one step in gaining the equality that women should have. As Alice Paul says in the movie‚ “It’s unfair to die in a fight we shouldn’t have to fight.” In Iron Jawed Angels‚ we are shown part of the journey to gain women the right to vote. Alice Paul and Lucy Burns meet with Carrie Chapman Catt and Anna Shaw about being
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Purpose The purpose of the lab is to determine the mass of the ‘active ingredient’ in a commercial ASA tablet. ------------------------------------------------- ------------------------------------------------- Introduction There are three main theories surrounding acids and bases including the Arrhenius‚ Bronsted-Lowry‚ and Lewis theories. The Arrhenius theory of acids and bases states that acids produce hydrogen ions (H+) in solution while bases produce hydroxide ions (OH-) in solution. Arrhenius
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The Iron Lady is a film‚ directed by Phyllida Lloyd‚ based on the life of Margaret Thatcher‚ the longest serving and the only female Prime Minister of Great Britain in the 20th century. The film shows Margaret Thatcher as an elderly woman who has flashbacks of the major and consequential events of her life. The ghost of her husband Dennis comments and reflects on her successes and failures who really is just the figment of her imagination. Margaret grows up working at the grocery shop‚ that her
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rate constant (k). Activation energy was also determined‚ and the effect of catalyst was evaluated in the reaction between peroxodisulphate ion S2O82-‚ and iodide ion‚ I-. S2O82-(aq) + 3 I-(aq) --> 2 SO42-(aq) + I3(aq) The general expression for the rate law‚ given this overall reaction‚ is: rate of disappearance of S2O82- = k[S2O82-]m[I-]n Chemical Kinetics is the chemistry of how fast or slow something is. These rates of reaction or the speed depends on many factors. Experiments show that the
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