Air And Water Essays - Energy Economics, Energy Conversion

Air And Water A major transition in the modern energy age began in the 1970s, when the big nation's industry started to grow up rapidly. The use of oil was very important and overnight, oil prices shot through the roof, and the trend of ever-cheaper, ever-more-plentiful energy sources were in need. Another player on the modern energy stage is nuclear power. An industry that didn't exist 40 years ago is now at a huge amount of production, producing 20 percent of the nation's electricity. Ironically, the industry is fading out. New orders ceased 20 years ago, and as aging plants reach the end of their lives, they are closing, one by one. All the non-renewable energy resources have positive and negative affects to the nature. However Nuclear Energy is the most dangerous one, as we can see what happened in Chernobyl in 1986, and it is dangerous if the nations use Nuclear Energy to kill people like at the end of the world war. It is not a dream to think of solar power that is cheap enough for universal use a world full of zero-polluting electric cars. Wide-scale use of fuel cells for powering buses and other forms of public transport. "Chicago and Vancouver are two cities which have pilot programs using fuel cells to power some of their public transport buses. Use of fossil fuels confined to petro-chemical products and fuel cell feedstock. Nuclear fusion or some other advanced nuclear process, supplying all base load power." (Solar) Also, there is continued interest and research into fusion power. Since fusion generates temperatures of millions of degrees, the main difficulty in developing fusion power has been in containing the heat of the reaction. Fusion is an expensive source of energy right now, but it might cost much cheaper in the near future. It is not very hard to guess that in the near future, all the energy sources will be much cheaper. The technology is changing almost everyday, it was not possible to dream internet ten years ago. Who can guess that what will be happen in the next ten years? But for sure non-renewable energy resources will not be renewed when all of them are used. We always used resources from the nature, now it is time to create our own resources that we can keep the earth and all the organic materials clean. The most green energy resource is solar energy right now and it is very cheap to get heat from the sunlight.

Social Conflict Notes Essay Example

Social Conflict Notes Essay Example Social Conflict Notes Essay Social Conflict Notes Essay Thinking Sociologically From: Will Keenan Social Conflict Perspective Discussion Themes: Conflict: Positive Negative Aspects Is society inherently, inevitably and universally ‘conflictual’? 1. When is conflict ever productive of social benefits? 2. Identify areas of social conflict that have wider ethical significance. Further Readings Follow-Up: Articles by: David F. Walsh Structure/Agency, pp. 8-33; Fran Tonkiss continuity/Change, pp. 34-48; and Don Slater Needs/Wants, pp. 315-28. in Jenks, Chris (ed. ) (1998) Core Sociological Dichotomies (Sage), Making Notes Look up the SUBJECT INDEX of Jenks (ed. ) and at least 1 Introductory Textbook/Encyclopaedia/Dictionary in Sociology and make notes under the following themes: basic Marxism; social conflict; social change; interests; power The Conflict Perspective: Key Ideas: In this view ‘Society’ is regarded as a scene of fundamental conflict between opposing interest groups. These conflicting interests may be based on: social class; race and ethnicity; gender and sexual orientation; disability; age, religion, cultural taste etc. There is no consensus other than a manipulated and manufactured one serving the dominant social groups’ interests. Society has no set purpose and no overarching goals outside these struggles for dominance and privilege. Key Names: Marx, Althusser, Gramsci, Poulantzas, Milliband, Stuart Hall Debates: KEY CONCEPTS FUNCTIONALISM vs MARXISM ORDER vs CONFLICT STABILITY vs CHANGE NEEDS vs INTERESTS CONSENSUS vs DISSENSUS INTEGRATION vs DIVISION HARMONY vs STRUGGLE ‘Big Guns’ Key Names: Marx(ists), Althusser, Gramsci, Poulantzas, Stuart Hall etc Frankfurt School: Marcuse, Adorno, Habermas, Critical Theorists Radical Feminism from Simone de Bouvoir to bell hooks Core elements of the ‘Marxian’ CONFLICT PERSPECTIVE Social class based on economic ownership is the key to power in society Class conflict is the source of all social power, social change and progress A ruling class and its subject classes are engaged in exploitative social relationships Class consciousness and False Consciousness characterize social life Alienation is the condition of exploited classes under capitalism Economic base (or infrastructure) and Political / Ideological superstructure Some Further Ideas Althusser employs the following key ideas: Ideological State Apparatuses (ISAs) mass media; education? Repressive State Apparatuses (RSAs) Hegemony Gramsci refers to ‘organic intellectuals’ Stuart Hall: the importance of culture CRITIQUE Unscientific (the Faith of Marxism Popper) Conspiracy theory (especially aimed at Instrumental Marxists) Communism does not appear imminent Left Functionalism (Jock Young: argues most Marxism is little more than form of Functionalism that replaces interests of society with ruling class). Subjective beliefs and interpretations of individuals ignored (Weber) Economic determinism Forms of (non-economic) conflict (gender, ethnic group) ignored in favour of economic conflicts Key Critics Popper, Weber, Dahrendorf, New Left ‘Idealism’ New Right Theorists Sociobiologists Radical Feminists Postmodernists Conflict and Change †¦ Order/Conflict Practical Activity Break into groups of 4 or 5 persons Identify a Spokesperson for Feedback Select ANY 2 THEMES on the handout list See if you can briefly identify the ORDER and the CONFLICT potential of your 2 themes. It would be great if groups chose at least 1 theme that was different from that of other groups TASK 1:- Consider any TWO of the following themes and identify aspects of social order and social conflict: Themes WAR RACE/ETHNICITY GENDER/SEXUALITY RELIGION AGE STYLE TASTE SPORT Task 2:- The ‘Peace in the Feud’ Principle IDENTIFY ‘DUAL’ ASPECTS of and consider opportunities for SOCIAL COOPERATION – i. Sports ii. Neighbours iii. Social Classes iv. Nations

Auditing and Assurance Service in Australia Essay

Auditing and Assurance Service in Australia - Essay Example This over extraction also may hamper the ground support system of the mine. Here overproduction also signifies that there is a huge lack of communication and interaction between the smelting division and the mining division. In fact it the problem with the entire company where signals are not present about the amount to be produced and how much amount of ore to be mined each time period. The second major risk that the division is currently having is the inability to gel with the acquired companies. As a result of this there is redundancy in operation as well as in costs incurred. These redundancies hurt more when the market is down for the ore. The business could fall drastically if the entire mining division is not centralized and integrated. The repeated processes of transferring the ores to the internal and external divisions are taking the cost component upwards. This is one of the major painful areas in the division. An ideal system would demand a proper coordination among the s hafts, and well assigned targets of productions should be given to the individual shafts. These shafts should not be made liable for the sales of the ores; rather it would be the central sales department who would have knowledge about the production requirement of the smelting departments, the foreign and the local customer demands. According to the demands production planning should be done, not the other way round. For this to happen, the mining stores of different shafts should be integrated. This brings us to the third level of risk the division has. The stores of the different shafts are not connected and no computer data base is maintained for the amount of stocks that the division is holding. The sales department to have a better knowledge about the amount of stocks that are with the different shafts should introduce a new IT package for store keeping. A proper communication flow can be maintained between the shafts and the  sales department if proper information is availab le in both the ends.  

Presentation Essay Example | Topics and Well Written Essays - 250 words - 15

Presentation - Essay Example Though their disillusion with the government hugely influences their active participation into the voting process they are not totally disinterested as shown in 2012 election where two-third had backed Obama! It is not as though the young people do not take part in the political activities or have strong opinion about burning social issues. They support gay marriage, want to legalize abortion and of course, want the drinking age to be lowered. Even though the authenticity of the chart is not established, the information does give insight into the general interests of the young people. Their concern can be accurately gauged from survey result that stress that youngsters are of the view that 57% want smaller government, fewer services and lower tax. At the same time, 66% think government runs programs which are inefficient and wasteful! So when students and the young people reel under the burden of student loan with little employment opportunities, their dislike for the politics is

Environmental Management Review of Dell Case Study

Environmental Management Review of Dell - Case Study Example The author of this research paper begins with the history of the company. Michael Dell founded the company when he was a 19 year old student at the University of Texas in Austin. He used a basic model: selling PCs to the final customer and built them to users’ specifications. Dell Computer still does it today, the so-called build-to-order scheme, although with some modifications. He started with telephone sales using IBM compatible PCs, and then assembling and selling his own brand. This model provided a 24-hour hotline for complaints and guaranteed immediate shipment of replacement parts, that is, 24- to 48-hour shipment. The improvements in design and production processes have helped Dell cut the estimated production cycle time for a desktop computer – from beginning of the build process to placement on a delivery truck – to 7 hours (McWilliams, 1997, cited in Kraemer et al, 1999:11). At its newest Austin plant, named Metri 12, sometimes a PC can be built, software installed and tested, and everything packed in a box for shipping within 5 hours (Ramstad, 1997, cited in Kraemer, 5). The customization that occurs in production is carried over to sales and service. For instance, Dell installs custom software on the machines that it builds for corporate customers. It also maintains an inventory of its customers. It seeks to lower the total cost of ownership for its corporate customers by helping them manage their PC inventories and offering technologies that reduce the cost of hardware and software maintenance in networks. (Dell outlines strategy, 1997). The company applies the principles of resource savings through the following strategies: Recycling Dell recycles unwanted Dell-branded products for free, and reduces impact to the environment through selling refurbished system. This saves money for the customer and lessens the amount of new materials used, while still keeping warranties from Dell. Old PCs, printers, software, modems and other such devices considered separate components, can be donated to charity organizations and foundations, through the company. The National Cristina Foundation and Dell have partnered to provide computer technology to people with disabilities, students at risk and economically disadvantaged persons. Combined with training, this program enables them to lead more productive lives. (Dell website) Dell designs and engineers its products to prevent pollution and conserve natural resources throughout the system's life, achieving environmental responsiveness in tandem with sound business management. Reducing the environmental impact of Dell products begins at the design stage as cross-functional product design teams work to make thoughtful and effective decisions that will have positive environmental results throughout the equipment's life cycle. (Dell website: Environment) Environmental responsibility goals Recycle or reuse 99 percent of waste from manufacturing operations by 2012. Further reduce carbon intensity by 15 percent by 2012 (based on 2006 levels). Improve average score from the LEED (Leadership in Energy and Environmental Design) Green Building Rating System by 2012. Design for the environment Dell pledged to eliminate brominated flame retardants and polyvinyl chloride from new product designs by 2009 that will force widespread changes in

Good Morning Vietnam And Apocalypse Now Comparison Film Studies Essay

Good Morning Vietnam And Apocalypse Now Comparison Film Studies Essay In the film Good Morning, Vietnam Adrian Cronauer is described, who arrives in Saigon in 1965 to take the place of a disc jockey at the local military station.  He immediately turns upside down the boring routine radio into the exquisite rock and roll, and adds a sharp sense of humor, becoming a legend among the soldiers, and a headache for authorities.  In his spare time from the radio shows, Adrian meets with Vietnamese girls, drinking beer and having fun, but only until the moment when he leaves the restaurant and it explodes.  He realizes that Vietnam is not a resort, there is a war where people are dying, and about which he is strictly forbidden to speak on the radio because of strict censorship.  He tries to tell the truth, but gets an advice at first not to spoil the format, and then he is sent home.  Adrian is leaving, but on the way to the aircraft he no longer sees the funny guys, but those, who will die soon The main plotline of the movie Apocalypse Now is the story of Special Forces of Captain Willard, who was sent to the jungles of Cambodia to eliminate the insane Colonel Kurtz, who commands a detachment of local residents and accused of killing several Vietnamese.  During the trip to Willard occurred a lot of strange events, and under the influence of the environment he is the closer to the goal of gradually losing the sense of reality and ceases to understand what to do next.  Many critics believe that the film, as Joseph Conrads novella, takes the viewer deep into the human psyche, and the war is only a backdrop for the manifestation of those human qualities that usually do not lie on the surface. And the film Good Morning, Vietnam describes Vietnam in 1965 yet relaxing resort with hot sun, beautiful girls and freely by the service.  But one morning there is a deafening explosion Adrian Cronauer immediately became the enemy of high officials.  And indeed, the humorist with the jokes and unpredictable behavior is a real threat to military discipline. But when on the radio there is heard his famous greeting Good Morning, Vietnam!, it seems that in this sunny country will never come the night The movie Apocalypse Now after its premiere in 1979 caused many conflicting responses from the audience some enthusiastically praised the movie, while others showered it with abuse.  Some critics wrote that the movie is too pretentious, others said that the film ends unclearly.  On the other hand, Roger Ebert, who declared Apocalypse Now the best film of 1979 and added it to your list of great films, wrote: Apocalypse Now is the best film about Vietnam, and one of the greatest ever filmed, because he moves much farther than everyone else in the dark corners of human soul. It is not so much about the war, but about how the war drags on the surface of a truth about the people that they would prefer to never know. As a fact, the film Good Morning, Vietnam received the awards, such as Golden Globe Award for Best Actor (Musical or Comedy) -to Robin Williams, the film was also nominated for an Oscar in the category Best Actor (Robin Williams) and a nominee for British Academy of Film, in the categories of Best Actor (Robin Williams), and Best Sound. And a film Apocalypse Now received such awards as Cannes Film Festival: Grand Prize (Golden Palm), 1979; Oscar for Best Cinematography, 1980; Oscar for best sound, 1980; Golden Globe Award for Best Director (Francis F. Coppola), 1980; Golden Globe Award for Best Supporting Actor (Robert Duvall), 1980, and Golden Globe Award for best music for the film (Carmine Coppola and Francis F. Coppola), 1980. The film Apocalypse Now became widely known in the press long before its release due to the long and difficult process of filming.  Coppolas wife Eleanor later wrote a book that talked about how the film was shot, and she also participated in the creation of the documentary film Heart of Darkness: Apocalypse movie maker, which tells about the making of the film. Both films Apocalypse Now and Good Morning, Vietnam have described the Vietnam War from different angles. These films have common stories lines and different views and understanding of the details of the war. Both films show the sad reality of the war, despite the fact that the directors use the different approaches to describe the war.

Mary Shelleys Frankenstein :: English Literature:

Mary Shelley's Frankenstein looks at the consequences of mans attempts to meddle in the creation of life. In the 21st century, with its scientific and technological advancements does her story still have an important message for humankind? Steven Foster Mary Shelley's 'Frankenstein' looks at the consequences of mans attempts to meddle in the creation of life. In the 21st century, with its scientific and technological advancements does her story still have an important message for humankind? In Frankenstein Mary Shelley is trying to convey many messages, but the most important one of these is that it is not man's business to do the jobs of the gods which is why Victor Frankenstein tells his story in the first place. I believe that it is still worth hearing this message as we are doing the same thing again; we have the technology to create a human being from scratch and nearly enough to choose what it looks like. Only the other day for example on the news they were showing how scientists could choose the sex of a baby. Mary Shelley intended the book as a warning, the story was told within the book as a warning and it was as if Victor Frankenstein was telling the story to the people of the time. The reason she wrote the book in the form of a warning was because at the time many sudden advancements led people to believe that they would soon understand and be able to create life. This did not happen but in our time we are realistically close to being able to do these things so the warning is still relevant as it talks about issues that haven't happened yet. Most of the characters in the book are there to fulfill a purpose, Robert Walton is in the book so that Frankenstein can warn someone about the dangers of pursuing a dream and so he can tell the story "learn from me, if not by my precepts, then at least by my example, how dangerous is the acquirement of knowledge, and how much happier that man is who believes his native village to be the world, than he who aspires to become greater than his nature will allow". The monster is in the book to be the result of an experiment as in the above analogy would be the killer bees who were designed to create more honey than ordinary bees who then escaped and have wiped out all other types of bees, like the monster who was intended to be the first of a new race "A new species would bless me as their creator" This quote

Cjs 210 Week 6 Checkpoint

Reactive Patrol CJS/210 January 17, 2012 Michael Catanzarita Reactive Patrol As I read chapter seven â€Å"Patrol and Traffic â€Å", I learn that a reactive patrol is a form of random patrol. Random patrol is said to be incident driven, or reactive, in that officers are responding to crimes only after they occur, either through rapid response to calls for service or to a violation or call in progress. Due to officer constantly moving it makes responding to these 911 calls easier and faster to respond. The specific activities an officer engages in while on random patrol vary significantly across officers, times, locations, and departments, because much of the time spent on patrol is officer initiated (Grant & Terry, 2008). I also learned about proactive patrol which is known as a Directed patrol. A direct patrol focuses more on targeted hot spots, crime problems, and/or offenders. Directed patrol addresses the problem-identification component of the problem solving process (Grant & Terry, 2008). Sometimes a directed patrol can occur on an informal level; this may be when an officer regularly drives past hot spots during random wanderings or parking the squad car in a specific location when writing reports are examples of an informal level. If policing agencies adopted only one of these patrol styles it would be harder to have police discretion. The condition of officer’s reaction to certain responds would change. If there was only reactive patrol officers would never be able to try to stop crimes before they happen. It would be wonderful to be able to stop all crimes before they happen but in all actuality we know this is not possible and that is why we need reactive and proactive patrol to keep our streets safe. Reference Grant, H. B. , & Terry, K. J. (2008). Law Enforcement. Patrol and Traffic, 7(Chapter 7), 171-172.

Chemistry Vocabulary - Definitions of Chemistry Terms

Chemistry Vocabulary - Definitions of Chemistry Terms This is a list of important chemistry vocabulary terms and their definitions. A more comprehensive list of chemistry terms can be found in my alphabetical chemistry glossary. You can use this vocabulary list to look up terms or you can make flashcards from the definitions to help learn them. absolute zero - Absolute zero is 0K. It is the lowest possible temperature. Theoretically, at absolute zero, atoms stop moving. accuracy - Accuracy is a measure of how close a measured value is to its true value. For example, if an object is exactly a meter long and you measure it as 1.1 meters long, that is more accurate than if you measured it at 1.5 meters long. acid - There are several ways to define an acid, but they include any chemical that gives off protons or H in water. Acids have a pH less than 7. They turn the pH indicator phenolphthalein colorless and turn litmus paper red. acid anhydride - An acid anhydride is an oxide that forms an acid when it is reacted with water. For example, when SO3- is added to water, it becomes sulfuric acid, H2SO4. actual yield - The actual yield is the amount of product you actually obtain from a chemical reaction, as in the amount you can measure or weigh as opposed to a calculated value. addition reaction - An addition reaction is a chemical reaction in which atoms add to a carbon-carbon multiple bond. alcohol - An alcohol is any organic molecule that has an -OH group. aldehyde - An aldehyde is any organic molecule that has a -COH group. alkali metal s of alkali metals include lithium, sodium, and potassium. alkaline earth metal s of alkaline earth metals are magnesium and calcium. alkane - An alkane is an organic molecule that only contains single carbon-carbon bonds. alkene - An alkene is an organic molecule that contains at least one CC or carbon-carbon double bond. alkyne - An alkyne is an organic molecule that contains at least one carbon-carbon triple bond. allotrope - Allotropes are different forms of a phase of an element. For example, diamond and graphite are allotropes of carbon. alpha particle - An alpha particle is another name for a helium nucleus, which contains two protons and two neutrons. Its called an alpha particle in reference to radioactive (alpha) decay. amine - An amine is an organic molecule in which one or more of the hydrogen atoms in ammonia have been replaced by an organic group. An example of an amine is methylamine. base - A base is a compound that produces OH- ions or electrons in water or that accepts protons. An example of a common base is sodium hydroxide, NaOH. beta particle - A beta particle is an electron, although the term is used when the electron is emitted in radioactive decay. binary compound - A binary compound is one made up of two elements. binding energy - Binding energy is the energy that holds protons and neutrons together in the atomic nucleus. bond energy - Bond energy is the amount of energy required to break one mole of chemical bonds. bond length - Bond length is the average distance between the nuclei of two atoms that share a bond. buffer - A liquid that resists change in pH when an acid or base is added. A buffer consists of a weak acid and its conjugate base. An example of a buffer is acetic acid and sodium acetate. calorimetry - Calorimetry is the study of heat flow. Calorimetry may be used to find the heat of reaction of two compounds or the heat of combustion of a compound, for example. carboxylic acid - A carboxylic acid is an organic molecule containing a -COOH group. An example of a carboxylic acid is acetic acid. catalyst - A catalyst is a substance that lowers the activation energy of a reaction or speeds it up without being consumed by the reaction. Enzymes are proteins that act as catalysts for biochemical reactions. cathode - A cathode is the electrode which gains electrons or is reduced. In other words, it is where reduction occurs in an electrochemical cell. chemical equation - A chemical equation is a description of a chemical reaction, including what reacts, what is produced, and which direction(s) the reaction proceeds. chemical property - A chemical property is a property that can only be observed when a chemical change occurs. Flammability is an example of a chemical property, since you cant measure how flammable a substance is without igniting it (making/breaking chemical bonds). covalent bond - A covalent bond is a chemical bond formed when two atoms share two electrons. critical mass - Critical mass is the minimum quantity of radioactive material needed to cause a nuclear chain reaction. critical point - The critical point is the endpoint of the liquid-vapor line in a phase diagram, past which a supercritical liquid forms. At the critical point, the liquid and vapor phases become indistinguishable from one another. crystal - A crystal is an ordered, repeating three-dimensional pattern of ions, atoms, or molecules. Most crystals are ionic solids, although other forms of crystals exist. delocalization - Delocalization is when electrons become free to move all over a molecule, such as when double bonds occur on adjacent atoms in a molecule. denature - There are two common meanings for this in chemistry. First, it can refer to any process used to make ethanol unfit for consumption (denatured alcohol). Second, denaturing can mean breaking down the three-dimensional structure of a molecule, such as a protein is denatured when exposed to heat. diffusion - Diffusion is the movement of particles from an area of higher concentration to one of lower concentration. dilution - Dilution is when a  solvent is added to a solution, making it less concentrated. dissociation - Dissociation is when a chemical reaction breaks a compound into two or more parts. For example, NaCl dissociates into Na and Cl- in water. double displacement reaction - A double displacement or double replacement reaction is when cations of two compounds switch places. effusion - Effusion is when a gas moves through an opening into a low-pressure container (e.g., is drawn by a vacuum). Effusion occurs more quickly than diffusion because additional molecules arent in the way. electrolysis - Electrolysis is using electricity to break the bonds in a compound to break it apart. electrolyte - An electrolyte is an ionic compound that dissolves in water to produce ions, which can conduct electricity. Strong electrolytes completely dissociate in water, while weak electrolytes only partially dissociate or break apart in water. enantiomers - Enantiomers are molecules that are non superimposable mirror images of each other. endothermic - Endothermic describes a process that absorbs heat. Endothermic reactions feel cold. endpoint - The endpoint is when a titration is stopped, typically because an indicator has changed color. The endpoint need not be the same as the equivalence point of a titration. energy level - An energy level is a possible value of energy that an electron can have in an atom. enthalpy - Enthalpy is a measure of the amount of energy in a system. entropy - Entropy is a measure of the disorder or randomness in a system. enzyme - An enzyme is a protein that acts as a catalyst in a biochemical reaction. equilibrium - Equilibrium occurs in reversible reactions when the forward rate of the reaction is the same as the reverse rate of the reaction. equivalence point - The equivalence point is when the solution in a titration is completely neutralized. It is not the same as the endpoint of a titration because the indicator may not change colors precisely when the solution is neutral. ester - An ester is an organic molecule with a R-CO-OR function group. excess reagent - Excess reagent is what you get when there is leftover reagent in a chemical reaction. excited state - An excited state is a higher energy state for an electron of an atom, ion, or molecule, compared with the energy of its ground state. exothermic - Exothermic describes a process that gives off heat. family - A family is a group of elements sharing similar properties. It is not necessarily the same thing as an element group. For example, the chalcogens or oxygen family consists of some different elements from the nonmetal group. Kelvin - Kelvin is a unit of temperature. A Kelvin is equal in size to a degree Celsius, although Kelvin starts from absolute zero. Add 273.15 to a Celsius temperature to get the Kelvin value. Kelvin is not reported with a  ° symbol. For example, you would simply write 300K not 300 °K. ketone - A ketone is a molecule that contains a R-CO-R functional group. An example of a common ketone is acetone (dimethyl ketone). kinetic energy - Kinetic energy is energy of motion. The more an object moves, the more kinetic energy it has. lanthanide contraction - The lanthanide contraction refers to the trend in which lanthanide atoms become smaller as you move left to right across the periodic table, even though they increase in atomic number. lattice energy - Lattice energy is the amount of energy released when one mole of a crystal forms from its gaseous ions. law of conservation of energy - The law of conservation of energy states the energy of the universe may change form, but its amount remains unchanged. ligand s of common ligands include water, carbon monoxide, and ammonia. mass - Mass is the amount of matter in a substance. It is commonly reported in units of grams. mole - Avogadros number (6.02 x 1023) of anything. node - A node is a location in an orbital with no probability of containing an electron. nucleon - A nucleon is a particle in the nucleus of an atom (proton or neutron). oxidation number The oxidation number is the apparent charge on an atom. For example, the oxidation number of an oxygen atom is -2. period - A period is a row (left to right) of the periodic table. precision - Precision is how repeatable a measurement is. More precise measurements are reported with more significant figures. pressure - Pressure is force per area. product - A product is something made as a result of a chemical reaction. quantum theory - Quantum theory is the description of energy levels and the predictions about the behavior of atoms at specific energy levels. radioactivity - Radioactivity occurs when the atomic nucleus is unstable and breaks apart, releasing energy or radiation. Raoults Law - Raoults Law states that the vapor pressure of a solution is directly proportional to the mole fraction of solvent. rate determining step - The rate determining step is the slowest step in any chemical reaction. rate law - A rate law is a mathematical expression relating the speed of a chemical reaction as a function of concentration. redox reaction - A redox reaction is a chemical reaction that involves oxidation and reduction. resonance structure - Resonance structures are the set of Lewis structures that can be drawn for a molecule when it has delocalized electrons. reversible reaction - A reversible reaction is a chemical reaction which can go both ways: reactants make products and products make reactants. RMS velocity - The RMS or root mean square velocity is the square root of the average of the squares of individual velocities of gas particles, which is a way of describing the average speed of gas particles. salt - An ionic compound formed from reacting an acid and a base. solute - The solute is the substance that gets dissolved in a solvent. Usually, it refers to a solid that is dissolved in a liquid. If you are mixing two liquids, the solute is the one that is present in a smaller amount. solvent - This is the liquid that dissolves a solute in solution. Technically, you can dissolve gases into liquids or into other gases, too. When making a solution where both substances are in the same phase (e.g., liquid-liquid), the solvent is the largest component of the solution. STP - STP means standard temperature and pressure, which is 273K and 1 atmosphere. strong acid - A strong acid is an acid that completely dissociates in water. An example of a strong acid is hydrochloric acid, HCl, which dissociates into H and Cl- in water. strong nuclear force - The strong nuclear force is the force that holds the protons and neutrons in an atomic nucleus together. sublimation - Sublimation is when a solid changes directly into a gas. At atmospheric pressure, dry ice or solid carbon dioxide goes directly into carbon dioxide vapor, never becoming liquid carbon dioxide. synthesis - Synthesis is making a larger molecule from two or more atoms or smaller molecules. system - A system includes everything you are evaluating in a situation. temperature - Temperature is a measure of the average kinetic energy of particles. theoretical yield - Theoretical yield is the amount of product which would result if a chemical reaction proceeded perfectly, to completion, with no loss. thermodynamics - Thermodynamics is the study of energy. titration - Titration is a procedure in which the concentration of an acid or base is determined by measuring how much base or acid is required to neutralize it. triple point - The triple point is the temperature and pressure at which the solid, liquid, and vapor phases of a substance exist in equilibrium. unit cell - A unit cell is the simplest repeating structure of a crystal. unsaturated - There are two common meanings for unsaturated in chemistry. The first refers to a chemical solution that does not contain all of the solute that can be dissolved in it. Unsaturated also refers to an organic compound which contains one or more double or triple carbon-carbon bonds. unshared electron pair - An unshared electron pair or lone pair refers to two electrons that arent participating in chemical bonding. valence electron - The valence electrons are the atoms outermost electrons. volatile - Volatile refers to a substance that has a high vapor pressure. VSEPR - VSEPR stands for Valence Shell Electron Pair Repulsion. This is a theory used that predicts molecular shapes based on the assumption that electrons stay as far as possible from each other. Quiz Yourself Ionic Compound Names QuizElement Symbol Quiz

10 Lead Element Facts (Pb or Atomic Number 82)

10 Lead Element Facts (Pb or Atomic Number 82) Lead is a heavy metal you encounter in everyday life in solder, stained glass windows, and possibly your drinking water. Here are 10 lead element facts. Fast Facts: Lead Element Name: LeadElement Symbol: PbAtomic Number: 82Atomic Weight: 207.2Element Category: Basic Metal or Post-Transition MetalAppearance: Lead is a metallic gray solid at room temperature.Electron Configuration:  [Xe] 4f14  5d10  6s2  6p2Oxidation State: The most common oxidation state is 2, followed by 4. The 3, 1, 1-, 2-, and 4- states also occur. Interesting Lead Element Facts Lead has atomic number 82, which means each lead atom has 82 protons. This is the highest atomic number for the stable elements. Natural lead consists of a mixture of 4 stable isotopes, although radioisotopes also exist. The element name lead comes from the Anglo-Saxon word for the metal.  Its chemical symbol is Pb, which is based on the word plumbum, the old Latin name for lead.Lead is a considered a basic metal or post-transition metal. It is a shiny blue-white metal when freshly cut, but oxidizes to a dull gray in air. It is a shiny chrome-silver when melted. While lead is dense, ductile, and malleable like many other metals, several of its properties are not what one would consider metallic. For example, the metal has a low melting point (327.46  oC)  and is a poor conductor of electricity.Lead is one of the metals that was known to ancient man. It is sometimes called the first metal (although the ancients also knew gold silver, and other metals). Alchemists associated the metal with the planet Saturn and quested for a way to transmute lead into gold. Over half the lead produced today is used in lead-acid car batteries. While lead does occur (rarely) in nature in its pure form, most of the lead produced today comes from recycled batteries. Lead is found in the mineral galena (PbS) and ores of copper, zinc, and silver.  Lead is highly toxic. The element primarily affects the central nervous system. It is particularly dangerous to babies and children, where lead exposure can stunt development. Lead is a cumulative poison. Unlike many toxins, there really is no safe exposure level to lead, even though it is present in many common materials.Lead is the only metal which exhibits zero Thomson effect. In other words, when an electrical current is passed through a sample of lead, heat is neither absorbed nor released.While modern scientists can readily distinguish most elements, it used to be difficult to tell lead and tin apart because the two metals share so many similar properties. So, for a long time the two elements were considered to be different forms of the same metal. The ancient Romans referred to lead as plumbum nigrum, which means black lead. They called tin plumbum candidum, which means bright lead. Wood pencils have never actually contained lead, even though lead is soft enough it could be used for writing. Pencil lead is a type of graphite the Romans called  plumbago, which means act for lead. The name stuck, even though the two materials are different. Lead is, however, related to graphite. Graphite is a form or allotrope of carbon. Lead belongs to the carbon family of elements.There are countless uses for lead. Because of its high corrosion resistance, the ancient Romans used it for plumbing. While this sounds like a dangerous practice, hard water forms scale inside pipes, lessening exposure to the toxic element. Even in modern times, lead solder has been common for welding plumbing fixtures. Lead has been added to gasoline to reduce engine knock, to face paints and paints used for toys and buildings, and even in cosmetics and foods (in the past) to add a sweet flavor. It is used to make stained glass, leaded crystal, fishing sinkers, radiation shields, bullets, scuba weig hts, roofing, ballasts, and statues. While once common as a paint additive and pesticide, lead compounds are less commonly used now because of their lingering toxicity. The sweet taste of the compounds makes them attractive to children and pets. The abundance of lead in the Earths crust is  14 parts per million by weight. The abundance in the solar system is  10 parts per billion by weight.

Bullying Research Paper Example | Topics and Well Written Essays - 1250 words - 1

Bullying - Research Paper Example Bullying is the act of intimidating or influencing someone who is weak in terms of strength, status or experience. According to Harris, Ireland and Forsyth, bullying is a way for the powerful to suppress the weaklings or just express their dominance over them (Harris 302, Ireland 80 & Forsyth 225). What leads to this attitude of the bullies’ and their underlying need to be accepted as superior is a different debate altogether. Bullying is considered as an everyday part of the society, but this does not mean that it should be accepted as a norm by the society. The society and the stakeholders need to counter this issue since those who are victims as well as bullies fall in the age bracket of those categorized as children and are considered as the most important section. The research question that this study sorts to address in this research is â€Å"whether childhood bullying impacts the adult life of the bully as well as the victim?† The hypothesis of the present study is that â€Å"bullying negatively impacts the childhood as well as the adult life of a bully as well as victim†. ... Psychological studies suggest that some children resort to bullying to overcome their fear of non-acceptance (Kostelnik 382). Copeland conducted a research to find out the effects of bullying on adult life and for this, they took a sample of 1420 young people and researched them at two age points 6-11 years and 24-26 years (Copeland 423). The group was classified into the bullies and victims and a third group of people that fell into both the categories, changing from the victim to a bully in adolescent, bully victims. After a comprehensive study, it was revealed that the bullies fared fairly well in their adult life as compared to the victims. The victims were researched to be six times more vulnerable to psychiatric disorders and other health problems as compared to people not involved in bullying or being bullied. Social Development of Bully and Victim In childhood, the effects of being bullied at school, neighborhood or elsewhere can be detected very easily. According to Maudlin, the characteristics of victims of bullying may or may not include â€Å"anxious, insecure, cautious, low self-esteem, defenseless, lower number of friends, experiencing social isolation and relatively newer to a particular school† (Maudlin 31). Since a child is too scared generally to discuss such an experience at the fear of being mocked or victimized again, this becomes an innate experience that eats up the child from the inside. He tends to feels oppressed and low most of the time which results in his retreating nature. The bully, however, is bound to have a dominating nature and a rowdy personality. His lack of regard for other’s feelings is a symptom of his bullying. As the child enters adolescent age, with

Answer questions Essay Example | Topics and Well Written Essays - 250 words - 23

Answer questions - Essay Example Males that are good hunters control their hunting groups and interact a lot with fertile females. The genes for goo hunters get passed on to other generations due to increased possibility of mating with fertile females (Van, pg.198). 2: read page 205 â€Å"The Mother/Infant Bond and Social Learning† and answer the following question: What do the monkeys raised without a mother tell us about the importance of parenting among primates? Are primates purely instinctual, or do they need to learn complex behaviors? Parenting among primates plays a crucial role in shaping the basic skills of the babies. The monkeys that did not grow up with a mother could not interact well with others, and they lacked basic mothering skills towards their young ones. Primates are not purely instinctual, and they need to learn the complex behaviors. The surrogate ‘mothers’ in the story did not provide any practice for the young monkeys to emulate; this letter made them behave negatively towards others (Wrangham, pg. 205). The chimpanzees used the knuckle-walking style of locomotion when on the ground. They mostly utilized the proximal finger joints of their hands while walking on quadrupedal but not the palms of their hands. The chimpanzee in the video portrayed minimal differences between them and other subspecies. Their bodies are more robust build than the bonobos, and they seem to have slight sexual dimorphic features. The grooming handclasp in the video shows that the Chimpanzee live in a fission-fusion society. Like other animals, they move and do their activities in groups mostly because they want to avoid the predators. The group size of the Chimpanzee keeps on changing in size and composition all through the year in addition to their activities