2013 “Reaction Classes and Pericyclic Reactions” ● 4 Lectures ● Recommended Texts: (i) J. March “Advanced Organic Chemistry”‚ p 839‚ `---Edn.‚ Oxford (W); Warren (2) Ch 34‚ 35. Syllabus 1) General principles (a) Reaction classes (i) Heterolytic (ii) Homolytic (iii) Pericyclic (b) Pericyclic Reaction Types 2) Electrocyclic Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules 3) Cycloaddition Reactions (a) Definition
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Observations of Chemical Changes Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic‚ acidic‚ or remain neutral when mixed with other chemicals. Procedure: In this experiment‚ various chemicals were mixed together‚ to determine a reaction. Using two drops from chemical 1 and two drops of chemical two‚ unless otherwise stated‚ then recording the type of physical reaction or color changes that occurred.
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electric current to drive an otherwise non-spontaneous chemical reaction. During electrolysis‚ hydrogen atoms (H2) are reduced at the cathode whereas the oxygen atoms (O2) are oxidized at the anode. There were three different solutions used in the experiment in order to have a better understanding of electrolysis reactions. From each solution‚ reaction equations were produced. The reactions could be observed from the indicators used. The reactions showed that hydrogen ions were produced at the anode
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Small Scale Industries Introduction The Ministry of Small Scale Industries (SSI) is a defunct Indian government ministry. It was merged with the Ministry of Agro and Rural Industries to form the Ministry of Micro‚ Small and Medium Enterprises. The ministry was tasked with the promotion of micro and small enterprises (MSEs). The Ministry of Small Scale Industries and Agro and Rural Industries (SSI&ARI) was created in October 1999. In September 2001‚ the ministry was split into
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Physical and Chemical Properties Purpose: The Physical and Chemical Properties lab provides the opportunity to investigate the physical and chemical properties of pure chemical substances and analyze the experiment results. Procedure: In the beginning of the experiment‚ I filled two 24-well plates half way with the given chemicals and sucked up these chemicals into their labeled pipets for later use. Following this‚ I performed a number of steps on each of the four test tubes and recorded observations
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2014 Lab report #1 on chemical and physical properties/ changes Introduction Summary: The purpose of this experiment is to allow students to understand how to differentiate physical and chemical properties and reactions of matter by observing changes of matters under circumstances. Physical properties are properties of matter that can be observed without changing the composition of the matter‚ including the volume‚ mass‚ color‚ density‚ and shape of it. Chemical properties include the matter’s
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Balancing chemical equations 1. Complete the following sentences‚ using the words or groups of words in the box below. You may use some words more than once. |• as small as possible |• decrease |• molecules |• quantities | |• balance |• different |• nature |• rearranging | |• bonds |• equal
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Chemistry 101 Physical & Chemical Properties Purpose To examine the physical and chemical properties of multiple natural chemical substances‚ and to determine which changes are chemical and which are physical. Data Solubility or Reaction | SubstanceName | Color | Odor | Effectof Heat | ColdH2O | HotH2O | LitmusTest | DiluteHCl | DiluteNaOH | Mg | Silver | Odorless | Slight change of color and expansion | No Reaction | Substance became buoyant‚ gas produced | No Reaction | Gas and heat produced
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Shelby Brown 8/28/10 Physical and chemical changes lab essay Changes in matter occur every day. There are two types of ways matter can be altered; physically and chemically. Physical changes do not change the composition of the matter while chemical changes occur when one or more substances turn into a completely new substance. Physical changes can be seen through an altering of the substances physical property. A substances physical property is observed and measured without changing
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1. Introduction: This investigation will show the effect of temperature on the rate of reaction. The Berocca tablet was reacted with hot water (47oC) and then with cold water (20oC). In the hypothesis‚ it was predicted that the temperature will be inverse proportional to the time Berocca tablet reacts with water to produce 50ml of carbon dioxide gas. Through the result table‚ we can see that the hypothesis is supported and it was correct. In the conclusion‚ it was shown that the temperature has the
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