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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Comparison Between Hong Kong and Victoria I have been in Victoria‚ Canada for about 5weeks. I have learned a different lifestyle here. Victoria is absolutely different from Hong Kong. In this city‚ I feel really satisfied and relaxed. In this programme‚ I have learned more about Canadian culture and some condition than before. It is really helpful for improving my global view. During the Cultural and Language Immersion Scheme‚ my homestay has helped me a lot and provided a pretty good
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but what I think of them.” Queen Victoria for the people‚ she was destined to solve the people problems. Queen Victoria was a kind woman. Throughout her troubled childhood‚ Victoria remained positive and focused. Several people considered Queen Victoria a proud queen who went out of her way to assure that her people were happy. Queen Victoria supported her people in great ways such as‚ giving woman petticoats; she built schoolhouses for the poor. When Queen Victoria died at the age of 82‚ she was still
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Theme : Electrical Sector and Chemical Engineer a) “The Chemical Engineer – His Role in Electrical Manufacturing” by N.R. Maleady The article is about the role of chemical engineer in manufacturing transformers in the electrical manufacturing sector. The important components of the transformer are copper wire‚ cellulosic insulation‚ insulating varnish and dielectric liquid. Wire enamel or resin is the insulting structure for copper wire. The resin can either applied as a solution or in solventless
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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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If there’s one thing undeniable about Victoria Beckham‚ it’s definitely going to be the air of sophistication looming around and contained within her. Many would remember Victoria as one of the five members of worldwide sensation Spice Girls‚ and her using the nickname Posh Spice is a premonition of something big about her future. Despite the fact that she wed football superstar David Beckham and reared children‚ the pizzazz and gall to look even better is just too difficult to miss. Nowadays‚ we
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• Identify your topic: Queen Victoria • Political/ social context: Victoria turned 18 on 24 May 1837. On 20 June 1837‚ William IV died at the age of 71‚ and Victoria became Queen of the United Kingdom. Her coronation took place on 28 June 1838‚ and she became the first sovereign to take up residence at Buckingham Palace. The reform of government allowed England to avoid the politically wrong conditions sweeping across Europe in the mid-nineteenth century. The continent experienced the growing
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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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