INTRODUCTION TO CHEMICAL BONDS CHEMICAL BOND Definition: A chemical bond is defined as a force that acts between two or more atoms to hold them together as a stable molecule. Main types of bond: 1. Ionic or electrovalent bond‚ 2. Covalent bond‚ 3. Coordinate covalent bond Forth type of bond: Metallic bond: The type of bonding which holds the atoms together in metal crystal. Valence electron: The electrons in the outer most energy level in an atom that takes part in chemical bonding
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Chemical bond From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges‚ either between electrons and nuclei‚ or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are "strong bonds" such as covalent or ionic bonds and "weak bonds"
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INTERNAL AUDIT 1 Internal audit ‘Internal audit’ is an appraisal activity established by management for the review of accounting and internal control systems as a service to the entity. It reviews‚ monitors and make recommendations for the improvement of systems. Other activities include: Examination of financial information Review of economy‚ efficiency and effectiveness (‘value-for-money’ audits) Review of compliance with external laws and regulations Review of internal policies Review
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Chemical Periodicity ------------------------------------------------- ABSTRACT The experiment chemical periodicity shows the properties and reactions belonging to group IA‚ IIA‚ and IVA. Proper procedures and observations were done to determine the solubility‚ physical state‚ color‚ and appearance of the compounds namely Li2CO3‚ Na2CO3‚ K2CO3‚ CaCO3‚ and BaCO3. The results shows that Li2CO3‚ Na2CO3‚ K2CO3 were soluble in water‚ while MgCO3‚ CaCO3‚and BaCO3 were not soluble. All of these compounds
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Chemical Bonding Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms ... a chemical bond. The two extreme cases of chemical bonds are: Covalent Bonds Covalent chemical bonds involve the sharing of a pair of valence electrons by two atoms‚ in contrast to the transfer of electrons in ionic bonds. Such bonds lead
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introductory planning sheet to help identify how two organisations plan recruitment using internal and external sources. In this report I will be identifying how two organisations plan recruitment using internal and external sources. I will also be outlining the reasons for recruitment and the time and cost implications regarding each method. I have chosen Asda and River Island as my two organisations. Asda Internal Recruitment This refers to the filling of job vacancies from within the business‚ where
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Reflection Paper Do I have the Qualities‚ Traits and Characteristics of a Corporate Entrepreneur? Module 1 – Entrepreneurial Leadership In Partial Fulfillment of the Requirements for Masters in Corporate Entrepreneurship Submitted to : Dr. Eduardo A. Morato Jr. Submitted by : Gerald Ian E. Conlu I felt lucky and privileged the day my superior ‚ Mr. Robert E. Tongcua then VP for Mindanao informed me that I qualified for the Pepsi Cola Products Philippines Inc ( PCPPI
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Question 1 a) Select two companies where inadequate internal control have resulted in disastrous effects on the organisation or exposed it to heavy losses. Research the facts of the failure and report on the facts and the losses suffered. In your report‚ include suggestions for changes to operations (internal controls) that could have prevented the final outcome. Where could you find a list of these internal controls and how are they documented? Examples of companies include: Coles Myer Ltd
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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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changes are used to describe matter. A property is a trait of matter‚ when that sample of matter is in a fixed state. There are two different types of properties: physical properties and chemical properties. A change is something that alters the properties of a substance. There are two types of changes: chemical changes and physical changes. A physical property is a property that can be observed without changing the makeup (or composition) of a substance. Some examples of a physical properties
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