DEFINITIONS OF OXIDATION AND REDUCTION (REDOX) This page looks at the various definitions of oxidation and reduction (redox) in terms of the transfer of oxygen‚ hydrogen and electrons. It also explains the terms oxidising agent and reducing agent. Oxidation and reduction in terms of oxygen transfer Definitions • Oxidation is gain of oxygen. • Reduction is loss of oxygen. For example‚ in the extraction of iron from its ore: [pic] Because both reduction and oxidation are going on side-by-side
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Karl Popper & Thomas Kuhn A. In the texts we have read‚ science and myth have emerged as two important ways in which we understand and relate ourselves to the world. Focusing on at least two texts‚ critically discuss and contrast the theories of science and/or myth presented therein. Note that you can focus just on science‚ just on myth‚ or on both. Karl Popper and Thomas Kuhn are two monumental figures of twentieth century philosophy of science. Although Popper and Kuhn have dissimilar approaches
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Oxidation and Reduction Mnemonic: OILRIG Oxidation Is Loss‚ Reduction Is Gain Oxidation → the loss of electrons from an atom or an ion→ always happens at anode (positive electrode) → think anOde (O2 in the electrolysis of water xp) Redox reactions: Reactions involving the transfer of electrons e.g. burning‚ rusting‚ photosynthesis‚ respiration and the browning of apples. happens in three types of reactions: 1. addition of oxygen 2. removal of hydrogen 3. increase in valency (how easily an atom
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Oxidation Lab Part 1: Purpose: You are going to investigate the ease with which different metals undergo oxidation and reduction. Materials: | 4 samples of each of: lead‚ zinc‚ iron‚ copper | spot plates steel wool/sand paper | | | | Solutions of: | copper(II) sulfate Ferric nitrate Silver nitrate Lead (II) nitrate | | Procedure: 1. Obtain 4 samples of each metal and clean with steel wool or sand paper. Wash your hands after cleaning the metals so you are not exposed to lead
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Oxidation Number When elements combine to produce a compound‚ each element is assigned an “apparent” charge. This apparent charge‚ the charge an atom would have if both electrons in each bond were assigned to the more electronegative element‚ may be positive or negative. It is called the oxidation number or state of the element in the compound. Oxidation numbers are very useful in keeping track of what happens to electrons when various elements combine to form compounds. By remembering a few
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Lab 5 Oxidation of an alcohol CHM2123 Introduction: Oxidation is a key reaction in organic chemistry. Oxidation of an alcohol can produce aldehydes‚ ketones‚ or carboxylic acids. One of the methods of oxidation is an aldol reaction through carbon-carbon bonds. The oxidation oxidizes primary alcohols to aldehydes and secondary alcohols oxidizes ketones. Tertiary alcohols are converted to the common oxidizing agents. Scheme 5.1: Aldehydes can be oxidized easily to carboxylic acids in aqueous medias
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Kuhn Annotated Bibliography Buddy R. McNeal Jr. 4 February 2013 LSTD 5013 Percival‚ W. K. (1976). The Applicability of Kuhn ’s Paradigms to the History of Linguistics. Language‚ 52(2)‚ 285-294. Retrieved from http://people.ku.edu/~percival/Kuhn ’sParadigms.pdf This is a credible journal written by Keith Percival from the university of Kansas applying Kuhn paradigm concept to the history of Linguistics. Percival displays two questions in this article: "Has Kuhn ’s Paradigm concept been correctly
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Social classes are organized by factions in Divergent‚ by Veronica Roth. Practically everything about an individual is based on what faction they belong to: their personality‚ how they dress‚ where they reside‚ what they consume‚ what they do for recreation‚ and what occupation they hold. The book takes place in a dystopian society of Chicago where everyone takes an aptitude test at the age of 16 to decide what faction they belong to and what their future will be. The factions are Abnegation‚ Amity
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To begin‚ these paradigms‚ as Kuhn describes them‚ are originally limited in scope and precision. It may still be unclear to the researcher(s) to what is actually being studied. Nonetheless‚ “the success of a paradigms… is at the start largely a promise of success discoverable in selected and still incomplete examples.” (pg 23) This however‚ does not mean the paradigm will be completely successful and by no means to solve all the existing problems. Yet‚ there is still the notion that the paradigm
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wanted to know whether or not something existed? If you have‚ that’s completely normal because everybody in their life struggles with this problem. One of these people was Isobel Kuhn. Because she struggled with this issue‚ many times she had doubted that God existed‚ so she wrote the book called “By Searching”. Isobel Kuhn commonly said these words because they were a reminder to her. One thing that these words reminded Isobel of was the fact that God did truly answer people’s prayer. So‚ because
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