Chemical Bonds Chemical Bond: is the force that holds atoms together in a compound. They form because they lower the potential energy of the charged particles that compose atoms. Chemical bonds can be broadly classified into two types: Ionic and Covalent. Ionic: metal & nonmetal Metals have a tendency to lose electrons and nonmetals have a tendency to gain them. The metal atom becomes a cation and a nonmetal becomes an anion. The oppositely charged ions attract one another and form an ionic
Premium Chemical bond Ion Atom
Executive summary Dell Inc.‚ one of the most successful information technology companies in the world‚ experienced record high share price above industry average in 2002 due to its renowned direct sale model and customized computers. However‚ at the beginning of 2006‚ Dell lost leading position to Hewlett-Packard‚ triggered several subsequent reactions to more adapt to fiercer marketplace as well‚ to win market share back. One of the key changes Dell implemented was introducing retailers into the
Premium Dell Supply chain management Inventory
Chemical Weapons Chemical weapons use the toxic properties of chemical substances rather than their explosive properties to produce physical or physiological effects on an enemy. Although instances of what might be styled as chemical weapons date to antiquity‚ much of the lore of chemical weapons as viewed today has its origins in World War I. During that conflict "gas" (actually an aerosol or vapor) was used effectively on numerous occasions by both sides to alter the outcome of battles. A significant
Premium Sarin World War I
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
Premium Poison Sarin World War I
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
Premium Waste Hazardous waste
CHEMICALS IN COSMETICS (OVERVIEW) FACTSHEET A cosmetic is a substance or preparation that is designed to be used on any external part of the human body – including in the mouth – to change the odours of the body‚ to change its appearance‚ cleanse it‚ keep it in good condition‚ perfume it or protect it. Cosmetics include soap‚ shampoo‚ moisturiser‚ hair dye‚ perfume‚ lipstick‚ mascara and many other products‚ but do not include products regulated as therapeutic goods (medicines). Cosmetics are made
Premium Cosmetics
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
Premium Chlorine World War I World War II
A Critical Analysis of the Effects of Chemical Castration and Physical Castration on the Recidivism Rates of Sex Offenders Introduction This paper examines the effects of chemical castration and physical castration on the recidivism rates of sex offenders. Using theory integration or the multifactor approach‚ the findings reveal there are several factors influencing sex offender recidivism. Both chemical castration and physical castration have the potential to reduce the recidivism
Premium Sex offender Human sexual behavior
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
Free Chemical reaction Hydrogen Chemistry
Diamond Chemicals PLC Executive Summary Diamond Chemicals is considering two mutually exclusive projects‚ the Merseyside project and the Rotterdam project‚ for the production of polypropylene When considering the Merseyside project‚ senior-management wants a positive impact on earnings per share. The addition to earnings per share was £28‚800 with an average addition of £2‚000 per year2. Calculated with erosion‚ the addition to earnings per share was £18‚800 with an average addition of £1
Premium Net present value Cash flow Internal rate of return