The Key to Successful Persuasive Essay Topics for College

The Key to Successful Persuasive Essay Topics for College The Persuasive Essay Topics for College Game As an example, in college, you might be requested to compose a paper from the opposing perspective. You should first establish the reason behind your essay, before you are able to write persuasive content about it. The question could possibly be part of your introduction, or it may make a wonderful title. As soon as you settle on this issue and pick the position on which you will base your essay, the remainder of the job can then begin. The Persuasive Essay Topics for College Chronicles Textbooks are obsolete and must be replaced by iPads. Selecting a great topic for your essay is among the most significant and frequently tricky parts for many students. Feel free to pick a topic you will delight in writing about and not just one which you think will please your professor. The Study Problem must meet up with the deadline picking a topic that's compelling enough to sustain additional study is important. In the majority of instances, you want to produce a topic which will enable other people to understand your perspective, and telling them to feel that what you write is true. In an issue of speaking, picking out persuasive essay topics is similar to telling yourself what you need to convey to the rest of earth. Consider an instance of how you can better your speaking via an illustration of a single change in the manner in which you believe. Why it's important to learn public speaking. The Good, the Bad and Persuasive Essay Topics for College Following that, you will pick the one that you're most passionate about. Since you can see, a lot of the topics listed are new and tackle the recent issues happening in the World today. The Key to Successful Persuasive Essay Topics for College Perform extensive research on the subject of your choice and make an impressive persuasive speech that individuals will remember for long. Different significance of a specific word depends upon the group of individuals who uses it. Many people wind up covering the very same tired topics they see in the media daily, just because they can't produce a better idea. All people ought to be permitted to receive free high education. The New Angle On Persuasive Essay Topics for College Just Released The significant distinction is that the argumentative essay should demonstrate a discussion rather than a single opinion. Persuasive essays are a fantastic means to encourage the reader to check at a particular topic in a different light. The simplest approach to select a persuasive essay topic is to talk about a present issue. The aim of the essay is to select an argument and attempt to persuade the reader to adopt it. You would like your paper to be noticed, meaning you don't wish to choose the simple topic and have your paper reflect exactly the same thing every one's paper does. At the exact same time, it's a terrific persuasive essay idea. It's important to understand that essay topics are just basic ideas that leave you pondering a notion that might be a huge deal to somebody else. Persuasive essay topics don't always need to be of a significant nature, you can write about things which are linked in your life. The Hidden Treasure of Persuasive Essay Topics for College You have to know all parts of financial topics after you choose them. On the opposing side, acquiring a list of good persuasive essay topics is insufficient. Take notes concerning all possible topics you'll be able to consider. Possessing excellent research abilities and selecting an excellent topic is essential. You may continue to keep your argumentative essays for your upcoming job portfolio in case they're highly graded. Our seasoned persuasive paper writers will supply you with effective solutions to ordinary problems, even supposing it is an argumentative essay. Still, figuring out the very best topic for your essay isn't your only conc ern for a student. There are several persuasive essay topics to pick from to finish your high school or college assignment. Next, you must think about the method on how you need to relay it to your readers. You should choose a topic that could be done in a two-year time period framework. When you're selecting an essay topic, it's important to select one that has a lot of information and statistics to strengthen your viewpoint, and don't exaggerate any info which you've chosen to write about. Deciding upon a persuasive essay topic may take plenty of time without ending up with the excellent solution. On the flip side, some argue that the expense of college leaves students with crippling debt they'll never have the ability to repay. You may trust us to offer expert assistance for many of your academic writing needs. Finding out how to compose an essay is something which will help students not just in their school and college career, but throughout their life too. Often college students get into a great deal of stress to get the suitable topic for the essay. Life After Persuasive Essay Topics for College Persuasive essays share a whole lot of resemblance with argumentative essays. All persuasive essays are like argumentative essays. An argumentative essay requires you to choose a topic and have a position on it. Every argumentative essay ought to have an opposing view which can help you to prove you're right. Sometimes it is quite hard to compose your own theme for essay. Sample persuasive essays can also give inspiration on topics to write on in addition to serve as examples about how to compose your essay. Always remember a great persuasive essay needs to be persuasive. There are a couple of basic guidelines to follow as a way to be in a position to compose a fantastic persuasive essay. Such essays shall have a good deal of quotations, based just on facts and laws, and show no more than the actual picture of the instance. In general, you can observe that writing a persuasive essay isn't a brain surgery. Just stick to the guidelines stated above, and you're going to be well on your way to writing an excellent persuasive essay. Before actually beginning to compose your essay, you have to pick an issue to write about. The teachers don't always assign the specific topic. You ought to make sure that you're very interested in the topic before you're able to persuade others about it . Qualities of a very good persuasive essay topic The topic ought to be specific. In school, essay writing has been made to be part of our learning activity. You may find there's a compelling argument for learning another language after all! Each time you wish to make sure your persuasive speech success, you ought to go far past the topic and words you have prepared. Our life is about words.

The Relationship Between Judged Attraction and Assumed Wealth Free Essays

The Relationship between Judged Attraction and Assumed Wealth A Psychological Study Whether a person is aware of it or not, everywhere they go, they are mentally judging people and creating an opinion about others without necessarily ever even meeting them. These judgments can be based off of simple appearance, or actions, or any other sort of visible aspect of a person. Simply put, humans are judgmental creatures. We will write a custom essay sample on The Relationship Between Judged Attraction and Assumed Wealth or any similar topic only for you Order Now One of the most common aspects of a person’s life that is judged from outside appearance is wealth. Assumedly, if a person dresses well, they must have money to buy such a wardrobe. Though this is certainly not always the case, people generally assume that what is on the outside is reflected on the inside. In this study, people’s visual interpretation of a person and the person’s assumed wealth will be examined. The participants will be shown pictures of random people of various wealth and asked to judge their monetary net worth. The variables being studied through this experiment are conceived attractiveness and monetary success. The goal of this experiment is to find a correlation between the two. Many studies concerning this phenomenon have been performed in the past and many books on the subject of attraction have been written. The relationship between physical attractiveness and monetary worth has been an interest for scientists for many years. As long as there has been social class, people through the ages have been judging other’s wealth by their appearance, whether people have been conscious of it or not. These studies have been important because these two variables (attractiveness and wealth) have also been linked to desire and favorability, two of the most unique and profound of human emotions, as will be discussed in the following In an experiment conducted at Georgia Southern University by researchers Dawson and McIntosh, the relationship between wealth, attractiveness, and desirability was examined (Dawson McIntosh, 2006). Dawson and McIntosh believed that men looked for physical attractiveness in women, whereas women looked for material resources (wealth) in men. Alternatively, the experimenters predicted that if men and women were less advantageous in these physical and monetary traits, they would compensate with other personal traits, such as personality. Participants to be judged for the experiment were randomly chosen from Yahoo Personals. Members of the opposite sex then rated the attractiveness of the participants and generated adjectives that were believed to describe the participant. For the male participants, it turned out that if they were considered less attractive or wealthy by the raters, their profile would emphasize of other positive personal characteristics. On the other hand, for the females, there was a trending phenomenon that if a profile emphasized greatly on the woman’s physical attractiveness, it concentrated little on other personal characteristics. However, there was no relation between how physically attractive the rater found the participant and what other positive characteristics were used to describe the participant. Dawson and McIntosh (2006) believed that their hypothesis was moderately supported. The judgments that people make on a person’s physical attractiveness can influence much more than the assumed size of his or hers wallet. These judgments can influence decisions as important as whom to vote for in government elections. This phenomenon was studied by Hart, Ottati, and Krumdick at the University of Alabama and Loyola University. They hypothesized that the more attractive a candidate was, the more memorable their campaign was (Hart, Ottati, Krumdick, 2011). Hart et. al. (2011), explored this by showing participants photos of potential candidates (all Democrat) along with campaign policies. The photos and information was then removed and the participants were asked to recite all the information that they could remember about each candidate and answer various questions regarding their attitudes and standpoints about the candidate and his or her campaign. The results show that those who were considered novices on the subject matter, being those that were unable to remember the candidates’ specific campaign and policy points, seemed to favor those that they found more physically attractive. Alternatively, those that were considered experts on the campaign material seemed to favor the less attractive of the candidates (Hart et. l, 2011). One might ask, however, what exactly is it of a person physique that lead people the judge them as attractive? While most people look at a person’s overall appearance and make judgments based on that, there are much subtler cues that a person subconsciously picks up on. Each person’s tastes are unique, and different cue s appeal to different people. Author Gordon L. Patzer Ph. D. described some of these cues in his book The Physical Attractiveness Phenomena (1985). Overall Patzer believed that personality was the main contributing factor. While physical first impressions are important, personality is what a person really remembers. A good impressions is key. If a person makes a bad impression of themselves upon meeting someone, their negativity or foolishness will forever live on in he or she’s new acquaintance’s eyes. After personality, however, traits that spark attraction become much more minute and specific. First, Patzer believed that height was a key contributor. Women have a tendency to be attracted to a man taller than herself, though not towering. Men, on the other hand, are attracted to women who are shorter than himself, but not unproportionately so. Even if one does not consciously acknowledge it, they are taking note of everyone’s height that they meet. People also take notice of someone’s facial aspects, such as shape of the jaw, hairline, etc. (Patzer, 1985). Specific combinations of all of these aspects, plus many more, determine how attractive a person finds another. Whereas none of these traits have an scientific relation to personal wealth, they do play a key role on how attractive someone is initially judged as. Whenever a person meets someone new, they subconsciously judge the stranger’s appearance and determine what level of attraction if had towards the stranger, even if there is no intent to pursue romantically. Other assumptions then stem off of this initial judgment of attraction. One of the most common is the attempt to judge a stranger’s wealth by their appearance and personal attraction. Scientists have been exploring the relationship between attractiveness and monetary value for years. The following study attempts to spread more light on the subject. Methods This study was designed to determine the correlation between ‘attractiveness’ and perceived wealth. Variables were defined as how personally attractive the surveyors found the estranged participants pictured versus how monetarily wealthy the stranger was based on the surveyors’ attraction. The data was collected using a Likert Scale to represent attractiveness and a scale with different levels of wealth. The results from the experiment allowed for the ratings of ‘perceived wealth’ to be compared to the rating of ‘attractiveness’ and discover if a correlation did in fact exist between the two. Based on the results of the previous study, â€Å"Attributions of physical attractiveness† (Johnson, MacEachern, 1985) ‘attractiveness’ should influence the perception of desirable traits, such as wealth. This may result for a multitude of reasons to be discussed in the future. Participants The participants sampled were the 10 females and 10 males pictured in the slide show. The participants varied all ages, ethnicities, and states of wealth in an attempt to make the sample’s characteristics representative of the public and mildly random. All participants were retrieved off of Google with some strategy to make sure that characteristics were varied in an attempt to be representative, making it a stratified sample. Also participating were the surveyors who rated the sample of participants. The surveyors consisted of a cluster sample of the Flagler College PSY 253 class. The sample totaled 17: 12 females and 5 males. Considering that the sample consisted of college students, assumedly between the ages of 19 and 22, the surveyors were not necessarily representative of the public but rather of college students in general. The participating surveyors received no compensation other than class participation and attendance points, which were awarded simply for showing up to the class. Materials For the experiment, a Powerpoint was used with 20 photos of participants, strangers to the surveyors, obtained off of Google: 10 pictures of females and 10 pictures of males, one per slide. Materials also included a paper survey handout on which the participants would record their responses. The survey consisted of two scales, one Likert scale rating attractiveness and one rating wealth. The Likert scale ran from 1-10 with one with the least attractive and ten the most and the scale for wealth ran from Poor($0-1000)-Average($1000-999,999)-Millionaire-Billionaire (See Appendix A). The participants provided their own writing utensils (pens and pencils). Procedure All participating surveyors were given a single handout survey (See Appendix A) by the administrators and then instructed to record their gender on the handout. Each surveyors’ gender determined whether they would be in Group A (Females) or Group B (Males). Both groups were instructed that they would be shown a slide show consisting of pictures of different individuals of the opposite sex and asked to record their opinions on attractiveness and wealth on the paper survey provided for each picture shown. Each picture was shown for approximately ten seconds and a totally of ten pictures were shown for each group. Group A was administered the survey first. The surveys were then collected by the administrators and a slideshow with ten different pictures was shown to Group B and the participants were asked to fill out the same survey as the prior group. The surveys were then collected by the administrators, concluding the experiment. Results Data was collected using a between subjects design. This experiment examined the correlation between how a person perceives attractiveness and how wealthy the person is then assumed to be. The experiment had two variables: Variable 1, perceived attractiveness, and Variable 2, assumed wealth. Participants were administered a survey listing the two variables, Variable 1 was measured on a Likert Scale of 1-10, when Variable 2 was measured on a scale of 1 (Poor, $0=1,000), 2 (Average, $1,000-$999,999), 3 (Millionaire), and 4 (Billionaire). The mean value for Variable 1 was M=4. 12 with a standard deviation of SD=1. 13314 and the mean value for Variable 2 was M=2. 36 with a standard deviation of SD=. 33066 (refer to Table 1). The median for Variable 2 was 3 and the mode is 2. The median and the mode for Variable 2 were both 2. The Pearson Correlation for the experiment was r=. 05 and the significance for each variable was p=. 891. This made the study’s finding significant and that there is a strong correlation between our variables. Discussion At the beginning of the experiment, it was hypothesized that there would be a positive correlation between how physically attractive someone was conceived as by a stranger and how wealthy they were assumed to be, judged on their rated attractiveness. At the end of the experiment, the results support this hypothesis. The significance of the variables was p=. 891, demonstrating that there is a high correlation between how attractive someone perceives a stranger and how wealthy the stranger is assumed to be, confirming the hypothesis. The positive correlation of the results suggests that the more attractive a person finds a stranger, the more monetary value the stranger is assumed to have. The Pearson Correlation was r=. 05 which proves that these results were reliable. The fact that r=. 05 means that the results were very specific, with few outliers, and can be condensed to a confined ranged of results, which all fit in together to support the hypothesis. Also, the low standard deviations of SD=1. 12212 and SD=. 33066 show how little overall variation there is to the variable means among participants. The results of this study can be interestingly related to the results of other studies previously performed, while the studies themselves may not mirror each other. As discovered by Dawson and McIntosh (2006), men and women on dating websites, if considered less attractive, emphasis more of their personal traits (Dawson McIntosh, 2006). Though it was not a component of the study being examined, some participants in the photos, when less attractive, dressed better, in fancier clothing, while those who were deemed more attractive tended to wear less flashy clothes. Perhaps if a person does not consider themselves to be physically appealing, they will try to look nice in other ways in public, such as clothing. Previously discussed, an experiment by Hart, Ottati, and Krumdick (2011) revealed that voters are more likely influenced by and likely to remember candidates that are perceived as more physically attractive and tend to think higher said attractive candidates (Hart et. al, 2011). This could have a relation to the current experiment in the respects that the survey takers may have had higher expectations of the participants’ monetary value if considered more attractive. This could be because people have a tendency to hold high hopes and expectations for those they find desirable. The experiment at hand has no relation, however, to the third theory Previously discussed by Patzer (1985). Patzer (1985) believed that there is a combination of specific attributes that causes a person to be attracted to another person. A specific feature that Patzer discussed was height, being that females prefer taller men and males vice versa (Patzer, 1985). However, there was no way for the surveyors to judge the participant’s height to their own through the pictures shown during the survey. For this experiment at least, height had nothing to do with personal attraction or attraction’s relation to wealth. There were very few flaws to this experiment that would have altered the results. The only obvious flaw was the issue of sexual orientation. For surveying ease, the experimenters divided the groups into male and female, rather than by sexual orientation because while attracted to males and attracted to females are two clear groups, there may have been bisexuals in the population and they would not have been able to take the survey twice. So though some surveyors may have felt that they were in the wrong group and it may have had an effect on the results, it effects were nothing detrimental. If repeated in the future, perhaps the experiment would involve surveys more catering to sexual orientation rather than being limited to division of gender. On the other hand, while there may have been a flaw, there was no experimenter bias because each participants’ correct wealth was never hinted at until the end. Also, it was impossible for the surveyors to develop practice effects because the survey involved no technique or talent. Also, there was no difficulty level so there was no floor or ceiling effects. In conclusion, the original hypothesis was supported. There was a positive correlation between perceived attractiveness and assumed monetary wealth, this meaning the more attractive a person found a stranger, the person then tended to assume the stranger proportionately more wealthy. There may be more triggers behind this phenomenon but judging by the survey results, the correlation was at least fueled by the attractiveness variable. References Dawson, B. L. , McIntosh, W. D. (2006). Sexual strategies theory and internet personal advertisements. CyberPsychology Behavior, 9 (5). Retrieved from http://research. flagler. du:9005/ehost/detail? vid=11hid=110sid=29028bce-cb55-42c1-b1e2-571b81dcc38f%40sessionmgr110bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=aphAN=22677445 Hart, W. , Ottati, V. C. , Krumdick, N. D. (2011). Physical attractiveness and candidate evaluation: a model of correction. Political Physology, 32 (2). Retrieved from http://research. flagler. edu:9005/ehost/detail? vid=5hid=110sid=29028bce-cb55-42c1-b1e2-571b81dcc38f%40sessionm gr110bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=aphAN=58702305 Patzer, G. L. (1985). The physical attractiveness phenomena. Los Angeles, CA: Plenum Press How to cite The Relationship Between Judged Attraction and Assumed Wealth, Essay examples

Nuclear Energy And The Environment Essays (1000 words) -

Nuclear Energy And The Environment Nuclear Energy and the Environment In our society, nuclear energy has become one of the most criticized forms of energy by the environmentalists. Thus, a look at nuclear energy and the environment and its impact on economic growth. Lewis Munford, an analyst, once wrote, Too much energy is as fatal as too little, hence the regulation of energy input and output not its unlimited expansion, is in fact one of the main laws of life. This is true when dealing with nuclear power. Because our societies structure and processes both depend upon energy, man is searching for the most efficient and cheapest form of energy that can be used on a long term basis. And because we equate power with growth, the more energy that a country uses, - the greater their expected economic growth. The problem is that energy is considered to have two facets or parts: it is a major source of man-made repercussions as well as being the basis of life support systems. Therefore, we are between two sections in which one is the section of resource availability and waste, and the other the continuity of life support systems pertinent to survival. Thus, the environmentalists believe that nuclear energy should not be used for various reasons. First of all, the waste product, i.e. plutonium, is extremely radioactive, which may cause the people who are working or living in or around the area of storage or use, to acquire leukemia and other cancers. They also show how billions of dollars are spent yearly on safety devices for a single reactor, and this still doesn't ensure the impossibility of a melt down. Two examples were then given of Chernobyl and Three Mile Island, in 1979, when thousands of people were killed and incapacitated. Finally, the environmentalists claim that if society wastes less energy, and develops the means to use the energy more efficiency, then there would be a definite decrease in the requirement for more energy producing plants. On the other hand, some business men and economists say that the present conditions should be kept intact, as the other forms of energy, e.g. oil, natural gas and coal, are only temporary, in dealing with surplus, and give off more pollution with less economic growth. Concurrently, countries wanted a more reliable, smokeless form of energy not controlled by OPEC, and very little uranium was required to produce such a high amount of resultant energy. Lastly, they said that renewable energy is (a) unreliable in that the wind, for example, could not be depended upon to blow, nor the sun to shine, and (b) were intermittent in that a 1,000 mega-watt solar farm may occupy about 5,000 acres of land, compared with less than 150 acres of land for a similar capacity nuclear power generation station. Because the energy technology that society employs directly influences the quantity and quality of life, the energy option that is chosen should have the greatest cost- benefit effectiveness as well as maximizing flexibility and purchases. However, those who believe in continuous energy consumption growth, seem to forget that there is only a limited supply of energy in every energy system, and to overdo any resource may provide for an unacceptable impact upon global and regional ecology. Thus, if the business world pushes the environment as far as it can go, Ceribus Paribus, please refer to figure 1. Thus, to use petroleum as a substitute for uranium, which is needed to power the nuclear system, would not be economically or environmentally sensible. I say this because, first of all, there is a major supply of uranium considering it was one of the last energy sources to be found as well as only a small amount of it is required to produce a lot of energy. Secondly, petroleum gives off carbon monoxide which is one of the reasons for ozone depletion; whereas, the uranium does not give off pollution except that it produces plutonium which needs to be buried for more than fifty years to get rid of its radiation. Finally, because so much of the petroleum will be required to power the vast area that nuclear energy can cover, the cost to us as the consumer would be massive! This would mean slower economic growth and/or expansion, especially when compared to nuclear energy. Therefore: Ceribus Paribus - (a) if the cost decreases, the demand increases, and - (b) if the cost increases, the demand decreases. Please refer to figures #2 and #3 respectively. Nuclear plants are now replacing coal burning plants. It will cost

Environmental Vocabulary for English Learners

Environmental Vocabulary for English Learners For English-language learners, vocabulary related to environmental issues can be challenging. Tables sectioned according to types of environmental issues can help. These tables provide the word or phrase in the left column and an example of how to use the term(s) in the righthand column to provide context. Important Issues From acid rain to pollution and radioactive waste, there are many environmental issues around which discussion and debate have evolved. Students will likely hear many of these terms on the news or read about them on the internet and in newspapers. The general list of issues should prove helpful. Term or Phrase Example Sentence acid rain The acid rain ruined the soil for the next three generations. aerosol Aerosol can be extremely toxic and must be used with care when sprayed in the air. animal welfare We must consider animal welfare as we strive to create a balance between man and nature. carbon monoxide Its important to have a carbon monoxide detector in your home for safety. climate The climate of an area can change over long periods of time. conservation Conservation focuses on making sure we protect the nature we havent already lost. endangered species There are many endangered species all over the planet that need our help. energy Humans are using an ever increasing amount of energy. nuclear energy Nuclear energy has passed out of fashion after a number of serious environmental disasters. solar energy Many hope that solar energy can wean us off our need for fossil fuels. exhaust fumes The exhaust fumes from cars standing in traffic can make you cough. fertilizers Fertilizers used by huge farms can pollute drinking water for miles around. forest fires Forest fires can burn out of control and create hazy weather conditions. global warming Some doubt that global warming is real. greenhouse effect The greenhouse effect is said to heat up the earth. (non)renewable resources As we move forward, we need to become more dependent on renewable energy resources. nuclear The exploration of nuclear science has created great boons, as well as horrific dangers for humanity. nuclear fallout The nuclear fallout from a bomb would be devastating to the local population. nuclear reactor The nuclear reactor was taken offline because of technical problems. Oil slick The oil slick caused by the sinking vessel could be seen for tens of miles. ozone layer Industrial additives have been threatening the ozone layer for many years. pesticide While its true that pesticides help kill off unwanted insects, there are serious problems to be considered. pollution Water and air pollution situations have improved over the last few decades in many countries. protected animal Its a protected animal in this country. You cant hunt it! rainforest The rain forest is lush and green, bursting with life from all sides. unleaded petrol Unleaded petrol is certainly cleaner than leaded petrol. waste The amount of plastic waste in the ocean is shocking. nuclear waste Nuclear waste can remain active for many thousands of years. radioactive waste They stored the radioactive waste at the site in Hanford. wildlife We must take the wildlife into account before we develop the site. Natural Disasters From drought to volcanic eruptions, natural disasters are a big part of the environmental discussion, as this table shows. Term or Phrase Example Sentence drought The drought has gone on for sixteen straight months. No water to be seen! earthquake The earthquake devastated the little village in the Rhine River. flood The flood forced more than 100 families from their homes. tidal wave A tidal wave hit the island. Luckily, no one was lost. typhoon The typhoon hit and dropped more than ten inches of rain in one hour! volcanic eruption Volcanic eruptions are spectacular, but they dont occur very often. Politics and Action Discussion generally leads to the formation of environmental groups and actions, some positive and some negative, as this final listing demonstrates. Environmental groups are followed by a listing of verbs (or actions) related to the environment and environmental issues. Term or Phrase Example Sentence environmental group The environmental group presented their case to the community. green issues Green issues have become one of the most important themes of this election cycle. pressure group The pressure group forced the company to stop building on that site. cut down We need to cut down on pollution drastically. destroy Human greed destroys millions of acres each year. dispose (of) The government must dispose of the waste properly. dump You can dump recyclable garbage in this container. protect Its our responsibility to protect the natural habit of this beautiful planet before its too late. pollute If you pollute in your own backyard, youll eventually notice it. recycle Make sure to recycle all paper and plastics. save We save bottles and newspapers to take to recycle at the end of each month. throw away Never just throw away a plastic bottle. Recycle it! use up Hopefully, well not use up all our resources before we start solving this problem together.

Examples of Polar and Nonpolar Molecules

Examples of Polar and Nonpolar Molecules The two main classes of molecules are polar molecules and nonpolar molecules. Some molecules are clearly polar or nonpolar, while many have some polarity and fall somewhere in between. Heres a look at what polar and nonpolar mean, how to predict whether a molecule will be one or the other, and examples of representative compounds. Key Takeaways: Polar and Nonpolar In chemistry, polarity refers to the distribution of electric charge around atoms, chemical groups, or molecules.Polar molecules occur when there is an electronegativity difference between the bonded atoms.Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out. Polar Molecules Polar molecules occur when two atoms do not share electrons equally in a covalent bond. A dipole forms, with part of the molecule carrying a slight positive charge and the other part carrying a slight negative charge. This happens when there is a difference between the electronegativity of each atom. An extreme difference forms an ionic bond, while a lesser difference forms a polar covalent bond. Fortunately, you can look up electronegativity on a table to predict whether or not atoms are likely to form polar covalent bonds. If the electronegativity difference between the two atoms is between 0.5 and 2.0, the atoms form a polar covalent bond. If the electronegativity difference between the atoms is greater than 2.0, the bond is ionic. Ionic compounds are extremely polar molecules. Examples of polar molecules include: Water - H2OAmmonia - NH3Sulfur dioxide - SO2Hydrogen sulfide - H2SEthanol - C2H6O Note ionic compounds, such as sodium chloride (NaCl), are polar. However, most of the time when people talk about polar molecules they mean polar covalent molecules and not all types of compounds with polarity! Nonpolar Molecules When molecules share electrons equally in a covalent bond there is no net electrical charge across the molecule. In a nonpolar covalent bond, the electrons are evenly distributed. You can predict nonpolar molecules will form when atoms have the same or similar electronegativity. In general, if the electronegativity difference between two atoms is less than 0.5, the bond is considered nonpolar, even though the only truly nonpolar molecules are those formed with identical atoms. Nonpolar molecules also form when atoms sharing a polar bond arrange such that the electric charges cancel each other out. Examples of nonpolar molecules include: Any of the noble gasses: He, Ne, Ar, Kr, Xe (These are atoms, not technically molecules.)Any of the homonuclear diatomic elements: H2, N2, O2, Cl2 (These are truly nonpolar molecules.)Carbon dioxide - CO2Benzene - C6H6Carbon tetrachloride - CCl4Methane - CH4Ethylene - C2H4Hydrocarbon liquids, such as gasoline and tolueneMost organic molecules Polarity and Mixing Solutions If you know the polarity of molecules, you can predict whether or not they will mix together to form chemical solutions. The general rule is that like dissolves like, which means polar molecules will dissolve into other polar liquids and nonpolar molecules will dissolve into nonpolar liquids. This is why oil and water dont mix: oil is nonpolar while water is polar. Its helpful to know which compounds are intermediate between polar and nonpolar because you can use them as an intermediate to dissolve a chemical into one it wouldnt mix with otherwise. For example, if you want to mix an ionic compound or polar compound in an organic solvent, you may be able to dissolve it in ethanol (polar, but not by a lot). Then, you can dissolve the ethanol solution into an organic solvent, such as xylene. Sources Ingold, C. K.; Ingold, E. H. (1926). The Nature of the Alternating Effect in Carbon Chains. Part V. A Discussion of Aromatic Substitution with Special Reference to Respective Roles of Polar and Nonpolar Dissociation; and a Further Study of the Relative Directive Efficiencies of Oxygen and Nitrogen. J. Chem. Soc.: 1310–1328. doi:10.1039/jr9262901310Pauling, L. (1960). The Nature of the Chemical Bond (3rd ed.). Oxford University Press. pp. 98–100. ISBN 0801403332.Ziaei-Moayyed, Maryam; Goodman, Edward; Williams, Peter (November 1,2000). Electrical Deflection of Polar Liquid Streams: A Misunderstood Demonstration. Journal of Chemical Education. 77 (11): 1520. doi:10.1021/ed077p1520

CIR#4 Assignment Example | Topics and Well Written Essays - 250 words

CIR#4 - Assignment Example ccurs in an individual and that is associated with present distress or disability or with a significantly increased risk of suffering death, pain, disability, or an important loss of freedom†. (Internet Addiction Disorder Web) This disorder was  first  described  in 1995  by Ivan  Goldberg  (Pickett Web). Rapid and regular looking through sites leads to the fact that the human brain loses its ability to in-depth analytical thinking, transforming regular users of the network into people who are impulsive and incapable for intellectual work. However, disturbances in thinking and memory loss are not only the negative impact of the Internet on person. Plunging into the Internet, people gradually lose skills of real communication, which leads to asocial behavior. The statistics is not joyful. It says that â€Å"1 in 8 Americans suffer from problematic Internet use† (The Center for Internet Addiction Recovery (â€Å"IAD†) Web) and it increases in the Eastern countries, as China, Taiwan, and Korea. Furthermore Stanford University’s research in 2006 showed that â€Å"1/8 of those surveyed had at least one problem due to too much use of the web† (Internet Addiction Statistics Web).   In addition to mental and cognitive disorders internet dependence is dangerous in connection with physical conditions. Spending a lot of time near the screens, we spoil the vision; we cause the Tunnel Syndrome of the wrist. Internet addiction disorder, which is accompanied by a sedentary lifestyle, leads to various diseases of the spine and joints, cardiovascular disease and many other

Homework Essay Example | Topics and Well Written Essays - 500 words

Homework - Essay Example The procedure of PCR is useful because sometimes, during DNA tests and sampling procedures, more DNA than what is available is required. Biochemists find it very useful when they have large number of replicas of the DNA or nucleotides they are working at. Hence, they do not find it difficult finding the DNA, recognizing it during their experiments, and working with it. Restriction enzymes are used to separate the desired DNS from all others in case PCR is not applicable or recommended. These enzymes cut down segments of genomic DNA at particular nucleotide sites. To separate these DNA fragments, electrophoresis procedures are used. Small diameter capillary array gel electrophoresis provides quicker separation of fragments by the application of electric fields. This technique, which in this case is called pulse field gel electrophoresis (PFGE), involves many ways, one of which is electro elusion which involves the use of multiple electrodes located orthogonally from the agarose gel containing DNA which is sealed in a dialysis tubing containing buffer. Small pulses of alternate current are passed all the way through this gel, which results in gene separation from the gel piece. The DNA is still in the dialysis tubing, so it is easily discoverable. Another way of recovering the DNA from the gel is by using agarase to digest the agarose, which leaves behind the desired DNA which we can separate easily. 16s rRNA gene sequencing is used for the identification of bacteria and studying of bacterial phylogeny and taxonomy. The reasons why DNA sequencing can be used for this purpose are many. First of all, 16s rRNA gene is present in nearly all bacteria. DNA sequences are not found in other organisms. Second, since the functionality of 16s rRNA has not altered with time, this means that we can use its sequence changes as an accurate measure of time or evolution. In other words, when we have to identify a lot of diverse types of organisms, we require two main