CHEMICAL BONDS Chemical Bonds I. Introduction 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 called a chemical bond. The two extreme cases of chemical bonds are the covalent bonds and ionic bonds. Covalent bonds are bonds in which one or more pairs of electrons are shared by two atoms. Covalent bonds
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Forces on Physical Properties By Hannah Kloss Chemistry 112L- 01 --- Eric Boakye November 10‚ 2014 Physical properties are properties that can be measured and seen in an object. An example of a physical property of an object would be the color‚ mass‚ solubility‚ volume‚ or the polarity of an object. A physical property can change the appearance of an object‚ but that does not mean that the chemical composition has to change. The chemical composition can remain the same. Physical properties
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Chemical Bonds Chemical Bond: is the force that holds atoms together in a compound. They form because they lower the potential energy of the charged particles that compose atoms. Chemical bonds can be broadly classified into two types: Ionic and Covalent. Ionic: metal & nonmetal Metals have a tendency to lose electrons and nonmetals have a tendency to gain them. The metal atom becomes a cation and a nonmetal becomes an anion. The oppositely charged ions attract one another and form an ionic
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Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc. (USA) Online ISSN: 2249-4626 & Print ISSN: 0975-5896 Chemical and Physicochemical Properties of Moringa Flours and Oil By Abiodun O.A.‚ Adegbite J.A. & Omolola‚ A.O. Osun State Polytechnic‚ Nigeria Abstract - This work evaluates the chemical and physic-chemical properties of moringa seed flour and oil. The moringa seed were divided into two portions. The first portion was milled into flout while the
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Chemical Reactions Chemical Change • reorganization • original substances form new substances with different formulas • may or may not involve a change of state • symbols used to describe chemical reaction are known as a chemical equation • Chemical equations do not have equal signs (=) they have an arrow Chemical Equations • Must follow the Law of Conservation of Matter • atoms can neither be created or destroyed during a chemical reaction • What
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details of activities (tick as appropriate) Observed by your assessor □ Assignments / Projects X Seen by a witness □ Questions □ Candidate Reflective account □ Learner explanation □ Award: City & Guilds Level 3 CYPW 4227 – 03 Early Years Candidate Name:
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Soren Chemical Why is the New Swimming Pool Product Sinking Company Background * Founded in 1942 by Timothy Soren * Sell : * Industrial-strength cleaning solutions * Industrial chemical for lubricants and fuels * Chemical solution for treating drinking water and wastewater. * 350 products line * 2006 revenue is $450 million. Product Background * Kailan MW Flocculants. (Clarifier) * Flocculants can be thought as chemical nets that works in water
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HARPER CHEMICAL COMPANY The Harper Chemical Company (HCC) was a medium sized producer of industrial chemicals‚ which sold its products primarily to customers in the paper industries and the paint industries. In 1980‚ HCC diversified into the production of a mineral called Dominite. By acquiring the Dominite activities‚ HCC hoped it would yield at least 15% return on investment after taxes. In early 1980‚ the HCC board of directors authorised the construction of a processing plant having a 40 000
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Exercise 2: Skeletal Muscle Physiology: Activity 2: The Effect of Stimulus Voltage on Skeletal Muscle Contraction Lab Report Pre-lab Quiz 1. Skeletal muscle fibers are innervated (stimulated) by c. motor neurons. 2. A single action potential propagating down a motor axon results in d. a single action potential and a single contractile event in the muscle fibers it innervates. 3. In resting skeletal muscle‚ calcium is stored in c. the sarcoplasmic reticulum. 4. During the latent period
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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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