Shine Bright Like a Diamond. How Daimonds Changed The World. When a man wants a women’s hand in marriage he offers her a diamond ring but was it all ways that way? Before diamond rings men gave there brides a rock as a signal of love and marriage. The history of diamonds goes way back‚ all the way back to 1867. Diamonds composed of carbon are the hardest natural substances in the world. The reason we have diamonds id due to volcanic activity. Until the 18th century the only diamond mines where in India
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Chemical Warfare Diyora Shukurova Period 1 06-05-2014 Chemical warfare is known as the “use of toxic chemicals in battle.” Chemicals have been used for battle throughout centuries. But also known as any toxic chemical which is deadly or can cause injuries. For example‚ poisoned arrows‚ boiling tar‚ arsenic smoke and noxious fumes‚ and there are many more. Chemical weapons were first used in 1915. The germen military was the first to release 168 tons of chlorine gas at Ypres and Belgium which caused
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manufacturing‚ deliver world class products. MRF Kottayam is certified with ISO 9001/ TS 16949‚ ISO 14001/OHSAS 18001-2007 etc. TPM initiatives improved the plant performance in all areas. MRF Kottayam unit also registered small scale energy saving projects for carbon credits and its liaison works with UNFCCC being done by consultants M/s. Ernst and Young. Its turnover crossed the 6100 crore mark in 2008. MRF has the widest product range among the domestic tyre companies as it makes tyres for all class
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he terms “chemical accident” or “chemical incident” refer to an event resulting in the release of a substance or substances hazardous to human health and/or the environment in the short or long term. Such events include fires‚ explosions‚ leakages or releases of toxic or hazardous materials that can cause people illness‚ injury‚ disability or death. While chemical accidents may occur whenever toxic materials are stored‚ transported or used‚ the most severe accidents are industrial accidents‚ involving
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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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I am going to talk about how gold is made. I also noticed some physical and chemical changes happening in the video. My first Physical change I saw was when they drill in a certain spot‚ on the rock then they can put the pieces back together and pretend it did not happen because the molecules have not changed in the object‚ you are just breaking them into smaller pieces. So that is why it is a physical change. A chemical change I saw is when there is gold mixed with other materials like silver and
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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 electromagnetic force 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" such as dipole-dipole interactions‚ the London dispersion force and hydrogen bonding
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Chemical Description Chemical Description Chemical #1 Seashell Calcium Carbonate - CaO3 Density | * 2.71 g/cm3 (calcite) * 2.83 g/cm3 (aragonite) | Exact mass | * 100.0869 g/mol | Molecular Formula | * CaO3 | Melting point | * 825 °C (calcite) * 1339 °C (aragonite) | Boiling point | * Decomposes | Acidity | * 9.0 | Flash point | * Non flammable | Crystal structure | * Trigonal | Other names | * Limestone‚ Marble‚ Chalk‚ Calcite and
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CHEMICAL EQUILIBRIUM Reversible reactions and dynamic equilibrium Ammonia (NH3) is an important industrial chemical that is used in the manufacture of fertilisers. It is manufactured by reacting hydrogen with nitrogen. The reaction is said to be reversible and the conversion of reactants to products is never complete. N2 + 3H2 2NH3 A reversible reaction is a reaction which can take place in either direction When the concentrations of the reactants and product have become constant‚ a
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part one 1 Strategic Analysis Strategic Analysis outline Strategic Management: Creating Competitive Advantages: An Overview Analyzing the External Environment of the Firm 3 2 Analyzing the Internal Environment of the Firm Recognizing a Firm’s Intellectual Assets: Human Capital‚ Technology and Knowledge‚ Brands and Trademarks‚ Relationships 4 chapter 1 Strategic Management: Creating Competitive Advantages: An Overview After reading this chapter‚ you should have
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