METALS Lose electrons and form positive cations. NON-METALS gain electrons and form negative anions. IONS Are charges particles. EXMAPLES Atomic Notation and Bohr Diagrams Lewis Dot Diagram Examples Lewis Dot Diagrams of an Negative ION (NON-METAL) Negative ions have 8 valence electrons! Lewis Dot Diagram of an Ionic Compound Lewis Dot Diagrams of an Positive ION (METAL) Positive Ions have no valence electrons! The Octet Rule REMEMBER! All elements want
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Discussion The purpose of the Density Lab was to determine the identity of four unknown solids and two unknown liquids by calculating their densities and comparing them to a density chart‚ taking into account error analysis and finally classifying the substances. In order to calculate this density‚ we first found the mass of the container that was to be holding the substances. We then found the volume of the substance‚ and lastly determined the mass of the container and substance. We subtracted
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Tel: No. 011-6499062 Mob.No. 9811649369 9971218802 POWER SECURITY & ALLIED SERVICES (REGT) SECURITY MEN POWER HOUSE KEEPING BETTER SERVICE IS OUR MOTO 187‚ Prahlad Market‚ Khanpur‚ Devli Road‚ New Delhi-110062 To‚ _______________________ _______________________ _______________________ Sub: Proposal for Security Management: Dear Sir‚ The POWER SECURITY & ALLIED SERVICES takes great pleasure in introducing itself to you‚ having served well over a decade in this
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Have you ever been tired to the point that you gone after that most loved beverage of yours to give you a "pick me up" have you ever pondered what gives you that vitality‚ that causes you to have a feeling that you send your heart on a thrill ride? The response to what makes that reaction is the unrivaled‚ Caffeine. I picked caffeine on the grounds that I‚ for one‚ am dependent on this substance and i use it in my ordinary life through coffee and other such foods. Caffeine (C8H10N4O2) is the
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CARIBBEAN EXAMINATIONS COUNCIL Caribbean Advanced Proficiency Examination CAPE ® CHEMISTRY SYLLABUS Unit 1 - effective for examinations from May/June 2007 Unit 2 - effective for examinations from May/June 2008 CXC A11/U2/06 Published by the Caribbean Examinations Council All rights reserved. No part of this publication may be reproduced‚ stored in a retrieval system‚ or transmitted in any form‚ or by any means electronic‚ photocopying‚ recording or otherwise without prior permission
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Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment‚ why they hold the different properties that depict them‚ how their atomic structure may be fathomed‚ and how they may be manipulated and changed. Although organic reactions have been conducted by man since the discovery of fire‚ the science of Organic chemistry did not develop until the turn of the eighteenth century‚ mainly in France at
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Edexel IGCSE Chemistry Revision Notes IGCSE Chemistry Triple Award Revision Guide Topic Introduction to chemistry Atomic Structure Structure and Bonding – Ionic Bonding Structure and Bonding – Covalent and Metallic Bonding Organic Chemistry - Alkanes Organic Chemistry – Alkenes / Addition Polymerisation Organic Chemistry – Alcohols / Condensation Polymerisation Calculations Periodic Table Reactivity Series and Metal Extraction Electrolysis Energetics Acids‚ Bases‚ Salts and Neutralisation Preparing
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E. Chemistry 11(1) Chemistry The scientific study of the composition‚ structure‚ and properties of matter and the changes that matter undergoes. Organic Chemistry The study of most carbon containing compounds. Inorganic Chemistry The study on non-organic substances‚ many of which have organic fragments bonded to metals (organometallics). Physical Chemistry The study of the properties and changes of matter and their relation to energy. Analytic Chemistry The identification
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1. A class that I believe was most particularly significant to me is AP Chemistry. Prior to enrolling in the class‚ I was mostly breezing through school without having to put in a considerable amount of time for homework and studying purposes. A few weeks into the course however‚ I had realized that this class was not going to be even close to the ones I have taken before in terms of the rigor and depth of understanding required to succeed. Now that I have finished the course‚ albeit with a B first
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CROOKED: English Translation: Nothing ever lasts forever In the end‚ you changed There is no reason‚ no sincerity Take away such a thing as love Tonight‚ I’ll be crooked Leave me alone I was alone anyway I have no one‚ everything is meaningless Take away the sugar-coated comfort Tonight‚ I’ll be crooked I scream and get dizzy I vent out of boredom to other couples I start fights for no reason like a town gangster Sometimes‚ I purposely shake my leg‚ crookedly The main characters of
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