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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Towards Sustainable Household Consumption? What is Consumption? What is Sustainable Consumption? Why is household consumption important? Environmental pressures from consumption will intensify Driving forces behind consumption patterns What is the role of government in promoting sustainable consumption? Policies to promote sustainable consumption General policy framework on sustainable consumption Broad policy guidelines to promote sustainable household consumption Some Unresolved Policy Questions
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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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Name: Jeanne Yoo|Date: 07/15/13| Exp 1: Observations of Chemical Changes|Lab Section: 1411-76426| Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl|1 |clear bubbles formed| B.|HCl + BTB|2 |turned orange after BTB was added‚ transparent‚ acidic| C.|NH3 + BTB|3 |turned dark blue after BTB was added‚ opaque‚ basic| D.|HCl + blue dye| |blue dye was missing from kit| E.|Blue dye + NaOCl| |blue dye was missing from kit| | with the 1 drop of HCl| ||
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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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PTU/BOS/Ch/101/30-12-2004/ BATCH 2004 Punjab Technical University‚ Jalandhar B.Tech. Chemical Engg. Scheme of Syllabi ( 3rd Semester ) Sr. no 1 2 3 4 5 6 7 8 9 Course Code Ch-201 Ch-203 Ch-205 Ch-207 Ch-209 Ch-211 Ch-213 Ch-215 Ch-217 Course Title Mechanical Operations Numerical Methods in Chemical Engineering Organic & Biotechnology Chemical Process Calculations Fluid Flow Strength of Materials Strength of Materials Lab. Fluid Flow Lab. Numerical Methods in Chem. Engg. Lab. L 3 3
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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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Chemicals of Life • With the exception of water‚ virtually all chemicals of life are CARBON based • Molecules that contain Carbon are considered organic with some exceptions such as CO2 • Carbon has 4 valence electrons so it is oriented in a tetrahedron shape Sketch→ • Carbon can form up to 4 covalent bonds and can form long chains‚ rings‚ and branched chain molecules • Carbon acts as the backbone of biological molecules • Molecules that only contain carbon and hydrogen are known as hydrocarbons→
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