9.1.1 Define oxidation and reduction in terms of electron loss and gain. Oxidation: the loss of electrons Reduction: the gain of electrons 9.1.2 Deduce the oxidation number of an element in a compound. Always determine elements that never change their oxidation number then ensure the charge of whole molecule is right. N.B. Atoms in elemental state have oxidation numbers of 0 9.1.3 State the names of compounds using oxidation numbers. Example of this in iron‚ can be iron(II) or iron(III) 9.1.4 Deduce
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yet realistic Nazi propaganda film directed by Eli Roth both embody this notion of conflicting perspectives. Compositional elements such as techniques specific to medium of production and contextual reference formulate the basis of how meaning is presented and therefore perceived. Heartfield implements several visual techniques‚ symbolism and contextual layering to communicate his perspective of the Nazi regime in World War Two. Iconography
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"Common sense of science" each involve a philosopher who tried to show how theories and facts in science is discovered. The article of "Chance: An African view"involves the theory of Popper‚ "How to convince a reluctant scientist" involves the theory of Kuhn and "Common sense of science" involves accumulation of both those theories in Lakatos. They are connected because "Chance: An African view" and "How to convince a reluctant scientist" are opposite of each other and Lakatos is a combination of the two
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indeed not science. On the other hand‚ the theories proposed by Thomas Kuhn‚ which was more of a historian of science than a philosopher of science‚ can oppose the criteria that considered economics as a non-science. In this essay‚ the philosophy of Kuhn will be discussed further‚ including the extent on how his theories fit to the world of IBA‚ as well as an illustration from the business field in relation to the theory. Kuhn believed that history is indeed very important in understanding science
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“Getting into the sport it was totally accidental” Coach Randy Roth from Berks Gymnastics Academy Says. This past weekend we interviewed extraordinary coach‚ Randy Roth. He coaches Gymnastics of all levels at Berks Gymnastics Academy in Reading‚ PA. Coach Randy played baseball for 11 years before he started coaching. “I didn’t know it at first‚” Randy says when asked how he knew gymnastics was the right sport for him. “After my friend introduced me to gymnastics‚ I was sixteen‚ and from then
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colorless‚ the end point titrations using KMnO4 as the titrant can be taken as the first pink color that appears in the solution (and stays without disappearing). The titration which involves the oxidation of Fe2+ ion to Fe3+ by permanganate ion‚ is carried out in sulfuric acid to prevent air-oxidation of Fe2+ (we can them determine the accurate number of oxygen reacted this way). MnO4- in KMnO4 Oxidizing agent; it is reduced Fe in Fe(NH4)2(SO4)2● 6H2O Reducing agent; it is oxidized Objective:
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Germ Theory The germ theory began in the late 1880s and began as the understanding that organisms beyond the view of man could exist. Bacteria were the first found microscopic items‚ and took a decade to prove. Job Lewis Smith‚ a pediatric doctor in the late nineteenth century began studying outbreaks of cholera. No other doctors were able to explain why the children were getting ill. He worked in the slums of New York and blamed the unsanitary conditions for many diseases. This was during a
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and to understand how a reduction-oxidation relationship works to produce spontaneity. Lastly‚ these results were used to determine the Faraday’s constant and Avogadro’s number by electrolysis‚ which is chemical decomposition produced by passing an electrical current through a solution with ions. The primary objective of part one of this experiment was to discover how the properties of an electrochemical cell works. An electrochemical cell is based on an oxidation-reduction reaction and is composed
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took place by using the oxidation numbers in the equation. Variables: 1. I cleaned the reaction surface to limit contamination 2. I held the chemicals at approximately a 90 degree angle for consistency Introduction: Redox reactions occur when both oxidation and reduction take place. All atoms can be assigned an oxidation number‚ which is a positive or negative number that help in determining the reducing and/or oxidizing agents in an equation. An increase in the oxidation number of an atom from
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Thomas Kuhn. The Structure of Scientific Revolution. About Thomas Kuhn and this essay Born in 1922 in Cincinnati‚ Kuhn obtained a Ph.D. degree in physics from Harvard University in 1949. He will later teach a course of history of science at the University of California‚ Berkeley. Their‚ in 1962‚ he wrote and published The Structure of Scientific Revolutions which will be the object of this essay. This essay will be divided in 5 parts: -the paradigm‚ -the phases of paradigm cycles (further
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