INTRODUCTION TO CHEMICAL BONDS CHEMICAL BOND Definition: A chemical bond is defined as a force that acts between two or more atoms to hold them together as a stable molecule. Main types of bond: 1. Ionic or electrovalent bond‚ 2. Covalent bond‚ 3. Coordinate covalent bond Forth type of bond: Metallic bond: The type of bonding which holds the atoms together in metal crystal. Valence electron: The electrons in the outer most energy level in an atom that takes part in chemical bonding
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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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2 Chemical warfare What is Chemical Warfare: To understand chemical warfare you must first understand what a chemical agent is. A United Nations report from 1969 defines chemical warfare agents as " ... chemical substances‚ whether gaseous‚ liquid or solid‚ which might be employed because of their direct toxic effects on man‚ animals and plants ... ". This means basically that any chemical that is used to directly effect and harm a person‚ plant‚ or animal would be an act of chemical warfare
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Chemical Eric Part 1 1. What hormonal problem could be causing these symptoms? His pituitary gland isn’t working because it has a tumor on it causing his problems like bad coordination‚ being very tall and skinny (6ft‚ 150lbs‚ and size 13 shoe)‚ right knee swelled‚ ulcerated sores on lower left leg that wouldn’t heal‚ often was sick and didn’t feel good‚ and having large hands and feet. 2. Why would joint damage be associated with rapid growth and low testosterone levels? Joint damage would be associated
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Discussion The excursion policy covers many different aspects of excursions and the expectations on the school‚ the staff attending the excursion and the student also. The policy outlines who is responsible for the approval of excursions‚ in some cases it may be the approval of the principal and in others (such as camps) it is the approval of the school council that is required. It also covers the selection of venue for the proposed excursion. The selection of the venue must be decided upon using
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Roxann Milbourn Case study number 2 March 13‚ 2014 Badfish anatphys Neurotoxin 1. To present the doctor’s notes portion of the case with a description of the following terms or concepts: Diaphoresis- is the medical term for profuse sweating or perspiring. The skin’s sweat glands sweat to aid in fever management. When your body temp rises you autonomic nervous system causes you eccrine glands to secrete fluid onto the surface of the skin where it cools as it evaporates. Motor dysfunction_
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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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Lut12575_web_sbe_01-11.indd Page 1 2/9/11 11:46 AM user-f494 /203/MHBR222/Lut12575_disk1of1/0078112575/Lut12575_pagefiles 1. “Frankenfoods” or Rice Bowl for the World: The U.S.–EU Dispute over Trade in Genetically Modified Organisms This simulation is designed to develop skills in crosscultural negotiations with an emphasis on multi-stakeholder dialogue and exchange. Synopsis On August 18‚ 2003‚ members of the World Trade Organization (WTO) met in Geneva to hear a U.S. request for a full-blown
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Hazardous chemical waste in the Liverpool area The aim of my research action plan is to address how people disposed of their hazardous chemical waste from households and schools within the Liverpool area. What is hazardous chemical waste? Chemical waste is a waste that is made from harmful chemicals such as: * Paint/ artist paint/ paint thinner * Motor oil * BBQ gas cylinders * Insect sprays * Rat poisons * Garden chemicals- fertilisers ‚ insecticides * Car wax
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Chemical Periodicity Gorospe‚ Jheremy Alden B. ____________________________________________________________________________________ ABSTRACT The experiment Chemical Periodicity was demonstrated by using different samples of Group IA‚ Group IIA and Group IVA elements. We placed each of the samples in each test tubes and the physical state‚ color‚ and appearance was identified. We determined the solubility of the elements by using distilled water. We used red and blue litmus paper for the Group
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