Redox reactions (Redox terminology‚ galvanic cells‚ standard electrode potentials‚ strength of oxidizing/reducing agents‚ corrosion and protection against it) Oxidation is defined as the loss of electrons and reduction is defined as the gain of electrons. Oxidizing agents‚ such as oxygen are defined as substances which accept electrons; reducing agents are substances which donate electrons. Redox reactions are: a) The reactions of metals with non-metals 2Na+Cl2→2Na+Cl- b) The reactions
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REACTIONS OF HYDROCARBONS Vanessa P. Manibpel De La Salle University - Dasmariñas ABSTRACT Five substances namely Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand
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Redox Reactions Reactions involving oxidation and reduction processes are very important in our everyday world. They make batteries work and cause metals to corrode (or help to prevent their corrosion). They enable us to obtain heat by burning fuels--in factories and in our bodies. Many redox reactions are complex. However‚ combustion and synthesis (from elements) are two ordinary examples which require very little description. Just a little more involved are the displacement reactions‚ with
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“The Story of An Hour” focuses on sixty minutes in the life of a young nineteenth-century woman‚ Mrs. Mallard. Upon learning of her husband’s death‚ Mrs. Mallard experiences an epiphany about her future without a husband. Her life‚ due to heart problems‚ suddenly ends after she unexpectedly finds out her husband is actually alive. Mrs. Mallard’s actions cause the reader to cogitate a hidden meaning weaved into Kate‘s short story. Chopin had an idea that women felt confined in their marriages‚ and
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Chemical Reactions What is a Chemical Reaction? Types of Chemical Reactions Redox Reactions Nonredox Reactions Classifying Reactions What is a Chemical Reaction? A chemical reaction is a process in which the identity of at least one substance changes. A chemical equation represents the total chemical change that occurs in a chemical reaction using symbols and chemical formulas for the substances involved. Reactants are the substances that are changed and products are the substances that are
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September 18‚ 2013 Summary In “The story of an Hour‚” Mrs. Mallard has a heart condition so‚ when news about her husband’s death is received. Mrs. Mallard’s sister‚ Josephine‚ sits down with her to relay the message as easy as possible without getting he worked up. Mrs. Mallard’s husband’s friends Richards originally found out because he was in the newspaper corridors. When a report of a train accident killed Brantley Mallard. After finding out about her husband’s death: Mrs. Mallard went to her
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Reaction Paper A person’s life can tell us so many stories about the world we are living in and how it can affect and change people. The Dolzura Cortez life story that had been put into movie tells us so many stories and realities that are currently happening nowadays. In the movie it shows us how the life of Dolzura started; a wife and a mother to her three kids. But like some of the family in the Philippine setting today‚ she also is receiving violence from her husband. And that is because
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Chemical Reactions Chemical reactions happen in almost everything around us. Reactions are very important in everyday life‚ and science. Chemical reactions are the changing of substances to other substances by the breaking of bonds in reactants and the formation of new bonds in products. There are different types of chemical reactions such as combination reaction‚ decomposition reaction‚ single-replacement reaction‚ double-replacement reaction‚ and combustion reaction. Combination
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endothermic reaction happened everywhere around us. Basically exothermic and endothermic reaction is transfer energy to the surroundings and take in energy from the surroundings (BBC GCSE bitesize). If the reaction forward ,then is exothermic.If the reaction is the backwards ‚then is endothermic. When a reaction take place‚ the energy started to transfer from different object to the surroundings or take away energy from the surroundings. When temperature started to change. Exothermic Reaction An exothermic
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The hypothesis If a chemical reaction occurs‚ then there will be indicators of a chemical change‚ was supported throughout this experiment. Throughout this experiment there were several reactions that took place‚ and an indicator of such chemical reactions could be seen throughout each one. The first piece of identifiable evidence was present in the first step‚ which was when copper (II) nitrate and sodium hydroxide were combined. When stirred‚ a blue precipitate formed at the bottom of the test
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