types of bonding.Covalent bonding and ionic bonding. Ionic bonding occurs from positively ions and negatively ions‚which attracts each other and bind together to form ionic compounds.Each ion is surrounded by an oppositely charged ion held by electrostatic attraction. There are several way in which atoms can chemically form to create compounds.There are two different ions: Metal ions In some circumstances‚metal atoms may lose electrons.This makes the atoms have more electrons than protons making
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carbonate and acetylacetone at room temperature and pressure. Introduction The anion acetylacetone (acac) used in this practical functions as a ligand which forms a complex with the cobalt metal cation in an octahedral array where there is electrostatic bonds between the cobalt metal and both the oxygen’s of the acetylacetone to form a six membered ring1. Figure1: The 3-D molecular structure of cobalt (III) acetylacetonate 2 Figure2(a):
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ELECTRICITY MR.ROBINSON Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well-known effects‚ such as lightning‚ static electricity‚ electromagnetic induction and the flow of electrical current. In addition‚ electricity permits the creation and reception of electromagnetic radiation such as radio waves. In electricity‚ charges produce electromagnetic fields which act
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Scrubber systems In short a scrubber system basically removes harmful materials from exhaust gases before they are released into the environment or atmosphere. There are two types of scrubbing methods. There is wet and dry scrubbing. Both systems work in similar ways and have the same end result. That is to change a toxic chemical into something less toxic or non-toxic. Now scrubber systems rely on a chemical reaction with a sorbent (which is a material that sorbs another substance or A substance
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Johannes Kepler was a key figure during the Scientific Revolution and his work in astronomy provided the framework for modern astronomy and physics. Kepler is best-known for his laws of planetary motion. His laws of planetary motion improved upon Copernicus’s heliocentric theory by explaining how the speeds of the planets varied and by using elliptical orbits rather than circular orbits. Kepler was born in the Free Imperial City of Weil der Stadt on December 27th‚ 1571. Kepler was schooled at the
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A couple of decades ago‚ people turn to the tap for drinking water. Now‚ most people‚ both young and old‚ drink water from bottles. In fact‚ the demand for bottled water is so great that it has become a multimillion-peso business in the country today. Why is there a substantial growth in the demand for bottled water? The main reason is the increasing health consciousness of the people. Many people prefer bottled water because they question the cleanliness of tap water. The quality of tap water has
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Appendix E ROCKET THEORY Rocketry encompasses a wide range of topics‚ each of which takes many years of study to master. This chapter provides an initial foundation toward the study of rocket theory by addressing the physical laws governing motion/propulsion‚ rocket performance parameters‚ rocket propulsion techniques‚ reaction masses (propellants)‚ chemical rockets and advanced propulsion techniques. matter‚ which depends on both how much and how fast propellants are used (mass flow rate)
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GENERADOR DE VAN DE GRAAFF [pic] 1. Generalización El generador de Van der Graaff‚ GVG‚ es un aparato utilizado para crear grandes voltajes. En realidad es un electróforo de funcionamiento continuo. Se basa en los fenómenos de electrización por contacto y en la inducción de carga. Este efecto es creado por un campo intenso y se asocia a la alta densidad de carga en las puntas. A machine‚ first demonstrated in 1929 by the American physicist Robert J. Van der Graaf (1901-1967)‚ which
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microencapsulation. The techniques can be categorized into three processes. This includes‚ physical process‚ physico-chemical process and chemical process. Physical process includes‚ pan coating‚spinning disk‚ spray drying‚ spray congealing‚ electrostatic deposition‚ centrifugal extrusion and air suspension coating. Physico-chemical process includes‚ coacervation phase separation and polymer encapsulation by rapid expansion of supercritical fluid. Chemical processes‚ include solvent evaporation
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COMPUTER What is a Computer? A computer is an electronic machine that can be programmed to accept data (input)‚ process it into useful information (output)‚ and store it in a storage device for future use Characteristics of a Computer • It’s a machine. • It is electronic. • It is automatic. • It can manipulate data. • It has memory • It has logical function Capabilities of a Computer • Speed • Accuracy • Repetitiveness • Storage
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