The Difference In Physical And Chemical Properties

The Difference In Physical And Chemical Properties Everything type matter is branded in the physical world with properties that define what it is and how it behaves when in the presence of other substances. These properties give the substance, whatever it may be, its own distinctive features that can be used to identify it. These properties can be determined by measuring and observing the material under different conditions. But any substance will have not just one set of properties, but two sets of different properties. These two sets will be physical properties and chemical properties. A physical property is a feature of a substance that can be observed without changing the identity of the substance. Many of these properties are properties that we can see with our eyes or feel with our hands, such as texture, shape, color, size, or smoothness. Even things such as conductivity, malleability, and ductility are physical properties. There are also two different kinds of physical properties. Intensive physical properties are features that will be the same no matter how much of the substance is present. On the other hand, extensive physical properties are properties that do depend on the amount of the substance present, such as mass, volume, length, and height. These are all physical properties because they can all be observed without making the substance into a different substance. As soon as the substance is turned into a different substance, it is considered a chemical property. Chemical properties describe the ability of a substance to change its identity. Anything that can be done to a substance that will change its identity is considered a chemical property, such as its flammability (in case of a fire) or its reactivity (how it reacts to other chemicals). If a substance changed into a different substance through a chemical reaction, then it has a chemical property related to that change. The change it went through is a chemical change. Chemical changes can also be called chemical reactions. In a chemical change, the identity of a substance will be changed, and it will have different properties. These changes can be shown in a chemical equation, like this: HCl + NaOH Æ’Â   NaCl + H2O This equation shows than when HCl, a strong acid, reacts with NaOH, a strong base, the chemical reaction results in sodium chloride (NaCl) and water (H2O). Physical changes can also occur. The difference is that instead of the substance changing its identity, it changes form. After a physical change, the properties of the substance will remain the same. There are three main types of physical changes. The first is mechanical physical change, such as tearing, crushing, or breaking a substance. Second, a solution could be made, like when salt is dissolved in water. No new substances are formed even though the salt is dissolved. The salt could still be filtered out. Thirdly, changes in the state of matter are also a physical change. Water that changes from a solid to a liquid to a gas is all physical changes. The equation to show this looks like this: H2O(s) Æ’Â   H2O(l) Æ’Â   H2O(g) The letters in the subscript convey what state of matter the H2O is in. The s stands for solid, the l for liquid, and the g for gas. The reason it is a physical change is because the chemical make-up of the substance is still the same throughout. If the chemical make-up of the substance changes, then it is a chemical change. Problem: To carry out several chemical physical changes to judge whether they are chemical or physical. Hypothesis: It is expected that the chemical changes will cause much more noticeable observations Materials: -Match Eyedropper -Candle (held stationary by clay) -10 drops of 0.1 M AgNO3 (silver nitrate) -Wooden splint -One piece (about 3cm) of Magnesium (Mg) -2 Watch Glasses -10 drops of 6 M HCl (concentrated hydrochloric acid) -Small spatula of NaCl -Tongs -10 mL of water (divided up into 2, 5mL divisions) -Bunsen Burner -2 Test tubes -Mortar and Pestle -Test tube cork -CuSO45H2O (Copper II sulfate pentahydrate) -A few filings of Fe (iron) Diagrams: *On attached pages* Procedure: Light a match and use it to light a candle held stationary by a piece of clay. Observe the flame, the wick, and the wax for several minutes. Record observations. Obtain a wooden splint and break it in half. Place the end of one half of the wooden splint into the candle flame. Extinguish the flames of both the candle and the splint. Place the splint into a watch glass and observe. Record observations. Dispose of the wood in the designated waste container. Place a small spatula of NaCl (sodium chloride) into a small test tube. Add 5 mL of water. Cover the test tube with a test tube cork and shake the contents of the tube. Record observations. Save the product for Step 4. Use an eyedropper to add 10 drops of a 0.1 M AgNO3 (silver nitrate: do not get this on you!) solution to the salt-water solution which was made in Step 3. Cover the tube with a cork and fully invert several times to mix properly. Record observations. Dispose in the designated waste container. Obtain one piece of Mg (magnesium) ribbon about 3 cm long. Tear it into 2 pieces. Place one piece into a test tube. Use a pipet to add 10 drops of 6 M HCl (concentrated hydrochloric acid). Record observations. Dispose in the designated waste container. Handle the other piece of Mg with tongs. Place the Mg into the hottest part of the burner flame at the front lab table for a few minutes until a noticeable change occurs. Caution: Do not look directly into the light! Place the product on a watch glass. Record observations. Dispose in the designated waste container. Use a mortar and pestle to grind several crystals of CuSO45H2O (copper II sulfate pentahydrate) into a uniform powder. Record observations. Place a small spatula of the CuSO45H2O powder into a test tube. Add 5 mL of water, cap it with a cork, and invert fully several times to mix. Record observations. Save the product for Step 8. To the test tube containing the water and CuSO45H2O, add a few Fe (iron) filings. Cap it with a cork and invert fully several times to fully mix. Look very closely into the test tube. A keen observer gets the proper results. Record observations. Dispose in the designated waste container. Data: Step Physical Properties of Starting Materials Observations of The Change 1 Candle looks waxy, with few drops dried on the side. It is a pale white color. It appears to be slightly burnt. The bottom clay is a bright yellow and has a smooth texture. Wax on the top melts and forms a liquid. Tip of wick is a bright red color. More drips start to appear on the side of the candle. As the wax drips down, it changes from clear to pale white, while also hardening. 2 Wood is smooth, light brown in color, and very brittle. It is small and rectangular. The watch glass is clear, with cloudy material on bottom of glass. The wood starts to wilt and shrivels, while turning black, with a red tip. Little bits of ash appear. Smoke rises from the flame, and it smells faintly of ham. 3 Sodium chloride looks clear, crystalline, and very granular. Some of the NaCl sticks to the side of the container. NaCl dissolves into the water to make a solution. Clear liquid in test tube. 4 AgNO3 looks cloudy on the surface of the water. It is an opaque white color and sticks together. Seems to form a heterogeneous mixture, with white specks of AgNO3 floating in the water. The water solution became chunky and cloudy. 5 Silver in color, malleable, small, thin, rectangular in shape. It is smooth on the surfaces and kind of sharp on the corners. It is 3cm in length. Test tube gets hot; piece of magnesium starts to disintegrate. At the end, ash is left at the bottom and what looks like smoke rises from the top. Liquid looks slight yellow. 6 Piece of magnesium looks the same as above. Magnesium starts to burn and then quickly turns into a bright white light as the flame gets really intense. There is a slight change in heat because the amount of flame increased. 7 Crystals look deep blue. There is no odor present. They look smooth, but clear-cut. They hold their shape. The water turns blue and the powder is dissolved. The liquid does look see-through. 8 (see part 2 of step 7) The liquid turns into a dirty brown color. The Fe seems to sink to the bottom of the test tube. It doesnt look like Fe anymore, though. It looks like copper because of its color. Questions: Intensive properties are properties that will not change based on the amount of a substance you have. Some examples from the lab are the waxiness of the candle, the color of the magnesium, or the malleability of the magnesium. An extensive property will change based on the amount of a substance you have. Examples of these properties (from the lab) are the size of the wooden splint, the length of the magnesium strip, or the height of the candle. a. Lighting a match: Chemical. The physical make-up of the wood and its head is changed. b. Melting wax: Physical. The wax is still wax, its just in a different form. c. Burning a wick: Chemical. The wick slowly burns down and changes its make-up. d. Freezing wax: Physical. It is still wax. e. Breaking wood splint: Physical. It is still wood. f. Burning wood: Chemical. It is a different material after you burn it. g. Dissolving sodium chloride: Physical. It is still salt. You could filter the salt back out of the solution. h. Reacting NaCl and AgNO3: Chemical Change. The two compounds change their molecular make-up. i. Breaking and sanding Mg: Physical. It is still magnesium; its just in a different form. j. Burning magnesium: Chemical. The magnesium is no longer magnesium and goes through a chemical reaction. k. Adding acid to Mg: Chemical. In the reaction, the Mg is changed. l. Crushing copper II sulfate: Physical. It is still copper II sulfate; its just been changed to a different form. m. Dissolving copper II sulfate: Physical. It is still the same material. n. Adding Fe to copper II sulfate: Chemical. The Fe changed because it bonded with So4. The change involving a candle is both chemical and physical because the candle wax is melting, which is a physical change to the candle, but the candle wick is also burning, which is a chemical change. The candle wax is remaining as wax; its just changing from a solid to a liquid. When it cools down, it forms a solid again. The wick, however, never returns to its previous state after being burned. It is no longer a candle wick. Two changes in the experiment that were exothermic were the wooden splint burning and the magnesium reacting with the hydrochloric acid. Wooden splint had a flame on it (when it was burning) that gave off a lot of heat. The magnesium caused the test tube to become extremely hot. A change in the experiment that was endothermic was when we melted the candle wax. The wax had to take in a lot of energy from the flame in order to do a physical change into a liquid. In chemical changes, the formulas of reactants compare to the formulas of the product because they are different. The substances are changed in a chemical change, so their molecular make-up will also change. For example, in Step 8, we had the reactants CuSO4 and Fe. But the products werent the same. CuSO4 Æ’Â   Cu +FeSO4 The iron bonded with the SO4, leaving copper behind. In a physical change, the formulas will be the same on each side. The only thing that might change is its state of matter. H2O(s) Æ’Â   H2O(l) The chemical make-up is still the same, but it did change from a liquid to a gas. The formulas on each side have to stay the same though. Data Analysis: Based on the observations collected, 3 of the 8 steps performed were physical changes. Step 1, the burning of the candle, was surprisingly a physical change. What made this clear is that it could be observed that the wax is only melting, not changing to a different substance. Due to background information, it can be concluded that this is a physical change. Step 3 involves dissolving NaCl in water, which is also classified as a physical change. Step 7 is just like step 3 in that a substance was dissolved in water, so this is also a physical change. Several chemical changes also occurred. Step 2, the burning of the wooden splint, marked a chemical change because the step started out with a piece of wood observed as smooth, light brown in color, and very brittle. After the change, it wilted and shriveled to a black substance with all new properties. Since it has transformed into a new substance, it can be concluded that this is a chemical change. The AgNO3 in step 4 reacts with the NaCl and the H2O to form a new substance in the liquid, which creates small, floating particles. Since a new substance was formed inside the liquid, this is also a chemical change. The magnesium reacting with the acid as well as being burned in the Bunsen burner was both chemical changes because neither of the changes warranted any magnesium afterwards, so it is known that a chemical change occurred. Lastly, the CuSO4-2 reacted with the Fe+2 to create different substances, namely Cu and FeSO4. It can therefore be concluded that this was also a chemical change. Error: A few things may have caused errors in this experiment, but because the results were not dependent on extremely precise amounts of any substance, getting the appropriate results was fairly easy. However, if the wrong substance had accidentally been placed in a test tube instead of another substance, the results will be completely different than what they are supposed to be. This could also result in a dangerous situation depending on what substance had been replaced. Another thing that may have hindered the results of the burning of the magnesium is if the flame wasnt hot enough to burn the magnesium or the piece of magnesium was somehow flawed, where it wouldnt burn. Another thing that would obstruct the correct results is if any test tube broke while it was in use, for it couldnt be used to observe the changes occurring anymore. If the candle (from step 1) had so much wax that the wick wasnt exposed enough to light, then it would have made it difficult to perform the first couple s teps of the experiment. Error can come from many different sources, but human error is the most frequent type of error. Conclusion: It was attempted to perform a variety of experiments to carry out chemical and physical changes. Then, it was judged what kind of change it was. Success was reached in doing this. Chemical changes were observed, such as the wooden splint burning, the magnesium bubbling, and the SO4-2 bonding to the Fe+2. Physical changes were also observed, such as the candle wax melting, the NaCl dissolving in the water, and ripping the magnesium strip in half. A lot was definitely learned about the difference between chemical and physical changes, and how to distinguish between the two.

There and Home Again Essay

1 Introduction This term I was asked to plan a holiday for me and my classmates to Beijing, China and at least one other place of my choice. The holiday is to be 21 days long. The second country chosen is Canada and the third is Kenya. 2 Flight Itinerary 2.1 Monday 23rd July depart Rockhampton at 8:00am arrive in Beijing at 11:40pm 2.2 Monday 28th July – Tues 29th July depart Beijing at 2:45pm arrive in Ottawa at 1:44pm 2.3 Monday 4thAugust-Wednesday 6th depart Ottawa at 9:30pm arrive in Nairobi 10:20am 2.4 Monday 11th August- Wednesday 13th August depart Nairobi at 4:40pm arrive in Rockhampton 11:50am 3 Beijing Day Planner 3.1 24th-26th July Departure: Daily Duration: 3 days (start from about 8:00 am and back around 5:00pm) Attraction: Day 1 – Badaling Great Wall, Ming tomb ; Day 2 – Tiananmen Square, Forbidden City, Temple of Heaven, Summer Palace; Day 3 – Hutong, Lama Temple, Panda Zoo and exterior view of Olympic Stadium. Tour Guide Language: English Feature: 3 days small Group tour is to enjoy Mutianyu Great Wall, Forbidden City, Temple of Heaven, Summer Palace, etc. Service include hotel – sightseeing transfer + English tour guide + lunch + entrance tickets. Figure : Great Wall of China 3.2 27th July Relax in hotel 28th-29th July are flying days 4 Ottawa Day Planner 4.1 30th July Day cruise with capital cruises on the Ottawa River to see spectacular views of some of the city’s attractions such as the Parliament Buildings, Canadian Museum of History (formerly Canadian Museum of Civilization), Rideau Falls a UNESCO world heritage site, and the Prime Minister’s residence. 4.2 31st July Relax in hotel 4.3 1st August Full day hop-on, hop-off bus tour with Gray Lines. Opportunity to Hop on and off at over 75 of Ottawa’s most famous city landmarks. 4.4 2nd August Enjoy a day walking around Ottawa and stop for lunch at one of the many cafes along the streets of Ottawa 4.5 3rd August Relax in hotel Figure : Parliament Hill Ottawa 4th-6th August are flying days 5 Nairobi Day Planner 5.1 7th-9th August 3 Days Masai Mara Camping Safari A fantastic 3 day Camping Safari to Kenya’s Masai Mara Reserve via the Great Rift Valley. 5.2 10th August Kickback, relax and unwind and get ready to go home. Figure Hilton hotel Narobi 10th-13th August are flying days Conclusion In order for the whole group to save for this holiday we would need to save $2400 a month which ends up being $590 per week for a year. In order to save up for just me I would need to save $874 per month for a year. It would be impractical for a highschool student my age to save up that much money in that shorter time. Bibliography Ottawa Canada’s capital, 2000, 4/05/14, http://www.ottawatourism.ca/en/visitors/what-to-do/tours-and-sightseeing Capital Cruises, 2007, 4/05/14, http://www.capitalcruisesottawa.com/en/sightseeing.html Beijing landscapes, 2002, 4/05/14, http://www.beijinglandscapes.com/beijing-tour.html Gray line, 2000, 4/05/14, http://www.grayline.com/tours/ottawa/discover-the-capital-1-day-hop-on-hop-off-5874_9/#.U2Ycn3mKC01

Andy Warhol Essay - 2426 Words

Hailed as the founding father of the Pop Art movement in the late 1950s and early 1960s, Andy Warhol, through his endeavors, brought forward societys obsession with mass culture and allowed it to become the subject of his art. He produced works that defied and challenged the popular notion of what art should be by disputing the traditional conventions pertaining to the uniqueness, authenticity, and authorship of art (Faerna 28). However, it is an injustice to say that Warhols goals primarily included the desire to create such a ground-breaking and salient style of American art or to entertain the public by making his own artistic contributions. Rather, Andy Warhols interests were more entwined in his own self-interest and greed.†¦show more content†¦Ultimately, these early rituals were precursors to the prolific and materialistic lifestyle Warhol would later choose to live. Later on in Andy Warhols artistic career, his actions and vocalizations would further verify his enthu siasm towards securing unfathomable amounts of materialistic possessions and popularity. In one of his philosophy books entitled: The Philosophy of Andy Warhol, he informed his readers that buying is much more American than thinking and [that he was] as American as they come (Bourdon 352). This attitude contributed to the large sums of money that went into securing the priceless decoration pieces that he used to outfit The Factory, his multi-floored studio. The Factory was bejeweled with a variety of ornate and precious items such as nineteenth-century European bronze figures, dated English and American paintings, mahogany, rosewood, and birds eye maple furniture, and replicas of Egyptian artifacts (Artelino.com). Regardless, no matter how much revenue Warhol earned, his childhood years had left him with a fear of being poor and thus he always chose to walk around with several hundred bills to remind himself of his own wealth. He even went so far as to sleep on a straw mattress cus hioned by wads of bills; his logic being: you only feel as rich as the money you have in your pocket orShow MoreRelated Andy Warhol Essays946 Words   |  4 PagesAmerican art, Andy Warhol was obsessed with fame, glamour, and money. He is best known for his images of stars and celebrities and for his reproductions of symbols of the American society. nbsp;nbsp;nbsp;nbsp;nbsp;Andrew Warhola’s (he later dropped the â€Å"a†) birth date is uncertain, Andy said himself that his birth certificate had been forged and June 6, 1928 became the date taken as his birthday. Others say he was born December 6, 1930 and then others say it was August 6, 1928. Andy was very mysteriousRead MoreAndy Warhol Essay1589 Words   |  7 PagesAndy Warhol Warhol was successful in bringing a new form of art to the forefront of an ever changing artworld in the 1960`s. I am interested in the field of commercial and graphic art and its connection to advertising. Thats why I have chosen Warhol as my subject for this essay. Im going to focus on the techniques and images he used on his paintings. Andy Warhol is one of the worlds most renown artists. He was a painter, a photographer, a filmmaker, a publisher of Interview magazineRead More Andy Warhol Essay743 Words   |  3 Pages The attitude of Warhol only confused society more. Instead of hiding his association with commercial art as other artists did, drawing and dividing the line between it and real art, he erased the line. â€Å"The Pop artists did images that anybody walking down Broadway could recognize in a split second.†(Warhol) Pop artist figures competed in that art market where images and auras, no just objects, are offered for consumption. Warhol has never objected to this state of affairs, which he did so much toRead More Andy Warhol Essay3682 Words   |  15 PagesAndy Warhol Works Cited Missing I just paint things I always thought were beautiful, things you use every day and never think about†¦ I just do it because I like it. (Beckris 110) I just do it because I like it is Andy’s philosophy on life. Andy might just be the most interesting and at the same time the most confusing individual you will ever read about. Andy’s work is like none others. His art brought common day people together and showed the impact of contemporary society and the idea ofRead MoreAndy Warhol Essay1572 Words   |  7 PagesAndy Warhol being one of the biggest influences in my work made him the obvious choice for this assignment. I see Warhols influence on the world we live in everyday and strongly believe he helped in creating the pop culture obsession in America. Andy went from rags to riches and defines the American dream. His work has inspired many and continues to be recognized by people throughout the world. Born August 6, 1928 to Andrej and Julia Warhola, Andy was the youngest of three brothers. AndysRead MoreAndy Warhol Essay1218 Words   |  5 PagesI selected Andy Warhol because I have long admired his crazy, quirky, unconventional style of producing works of art from normal, everyday subjects ranging from inanimate, normally unnoticed objects to pop culture celebrity icons. I first heard of him in 1986 when his show Andy Warhols Fifteen Minutes aired on MTV. The show featured Andy interviewing what he thought was the next up-and-coming musical sensations about to get their fifteen minutes of fame. Two years later on a poster in theRead MoreAndy Pope of Pop Warhol 690 Words   |  3 PagesThe American artist, Andy Warhol, was one of the major influential artists in the late 20th century, during the pop art movement. One of his art pieces is called Details of Renaissance Paintings (Sandro Botticelli, Birth of Venus, 1482) made in 1984 and currently located at The Andy Warhol Museum in his hometown. For all of his art works (printmaking, painting, cinema, photography), Warhol gives a whole new different perspective and meaning to society, by giving a â€Å"personality† to his work. The culturalRead MoreFrida Kahlo And Andy Warhol Essay1406 Words   |  6 Pagesalternating the traditional point of view. Frida Kahlo and Andy Warhol both contributed to different art movements. Frida Kahlo grew up with an illness and later experience what she would call two accidents that allowed her to start her innovative life. Kahlo changed societal norms having to do with sexuality, gen der roles, and a new form of expression with private and personal subjects that at the time weren’t allowed to be talked about. Andy Warhol came from rags to riches because of his excellence inRead MoreEssay about Andy Warhol1980 Words   |  8 Pages Andy Warhol Never before have I encountered more intriguing works of art than those done by Andy Warhol. I have been curious about his life ever since I saw his work in Milwaukee. I saw his famous work of the Campbells Soup Can. By viewing this, one can tell he is not your average artist. Im sure his life is full of interesting events that shaped him into who he was. As an artist myself, I would like to get to know the background of his life. I may then be able to appreciate his styles and understandRead MoreVenus and Andy Warhol Essay2165 Words   |  9 Pagesa full grown woman arriving at the shore. Painted in 1486, and with the medium of tempera on canvas, The Birth of Venus hangs in the Uffizi gallery in Florence Italy. This renaissance painting is huge and is 67.9 inches tall by 109.6 inches wide. Andy Warhol’s screen print Venus was done is 1984 and has been mass produced all over the country. There are many critiques and analysis for both of these pieces. Also there is a large amount of comparisons between the two, because they are both of the

Comparing Leadership Styles Eisenhower and Kennedy

With the end of World War Two and the presidency of Franklin Roosevelt, the United States emerged on the global stage as one of the planets great economic and military powers. It is safe to say that with Americas change in status, and in conjunction with profound industrial and technological change, that presidential leadership would necessarily have to transform yet again to meet a new era; nowhere could two different styles of leadership to meet the age be seen than in the Cold War administrations of Dwight D. Eisenhower and John F. Kennedy. Both men would exhibit a unique style of leadership suited to the personality of each, and each style could be considered to characterize the administration of each president, but nevertheless, both men would also use very similar leadership styles when necessary in order to attain certain policy goals. Eisenhowers signature leadership style has been characterized as a hidden hand sort of style, a style which suited him well in his capacity as the Supreme Allied Commander of European forces in World War II. Indeed, many of Eisenhowers contemporary commentators viewed him as above the fray or as a do nothing executive who preferred to remain aloof from events as history marched on by. With this hidden type of statesmanship, Eisenhower favored remaining behind the scenes as it were, and direct politics and policy without regard for earning credit--though when necessary, as when he ordered the 101st Airborne into Little RockShow MoreRelated Changing Interpretations of The Prince and Niccolo Machiavelli2638 Words   |  11 PagesThe Prince was rooted in classical historical examples, and neither provides any to supplement their arguments. Perhaps the worst offender to Machiavelli, however, has been the American media. Journalists have fallen in love with comparing prominent figures to Machiavelli, not realizing that by describing someone as a Machiavelli is really saying they are an out of work diplomat stuck on a farm away from the city. Ideally, that is probably not the picture they wanted to paint aboutRead MoreKnowledge Management and People7149 Words   |  29 Pageslack of bright young people, often do not understand this. If analysis shows that someone s brilliant work fails again and again as soon as cooperation from others is required, it probably indicates a lack of courtesy - that is, a lack of manners. Comparing your expectations with your results also indicates what not to do. We all have a vast number of areas in which we have no talent or skill and little chance of becoming even mediocre. In those areas a person - and especially a knowledge worker-shouldRead MoreDeveloping Management Skil ls404131 Words   |  1617 Pages3 THE CRITICAL ROLE OF MANAGEMENT SKILLS The Importance of Competent Managers 6 The Skills of Effective Managers 7 Essential Management Skills 8 What Are Management Skills? 9 Improving Management Skills 12 An Approach to Skill Development 13 Leadership and Management 16 Contents of the Book 18 Organization of the Book 19 Practice and Application 21 Diversity and Individual Differences 21 Summary 23 SUPPLEMENTARY MATERIAL 24 Diagnostic Survey and Exercises 24 Personal Assessment of ManagementRead MoreManagement Challenges for the 21st Century.Pdf60639 Words   |  243 PagesManaging Oneself Acknowledgments About the Author Books By Peter F. Drucker Credits Front Cover Copyright About the Publisher iii Introduction: Tomorrow’s â€Å"Hot† Issues Where, readers may ask, is the discussion of COMPETITIVE STRATEGY, of LEADERSHIP, of CREATIVITY, of TEAMWORK, of TECHNOLOGY in a book on MANAGEMENT CHALLENGES? Where are the â€Å"HOT† ISSUES OF TODAY? But this is the very reason why they are not in this book. It deals exclusively with TOMORROW’S â€Å"Hot† Issues—the crucial, centralRead MoreOne Significant Change That Has Occurred in the World Between 1900 and 2005. Explain the Impact This Change Has Made on Our Lives and Why It Is an Important Change.163893 Words   |  656 Pages numerous studies have shown the continuing relevance of white ethnicity in the United States, not only regarding public activities like voting but also in terms of intimate behavior such as mores and manners, childrearing practices, adolescent styles, and attitudes toward illness, psychiatric disorders, and authority, even in cases where the individuals examined were not particularly aware of their ethnicity.70 The recent waves of migration are still too new to say anything definite based onRead MoreProject Managment Case Studies214937 Words   |  860 Pagessystems and a second methodology for new product development. The implementation and acceptance of a project management methodology can be difficult if the organization s culture provides a great deal of resistance toward the change. Strong executive leadership may be necessary such that the barriers to change can be overcome quickly. These barriers can exist at all levels of management as well as at the worker level. The changes may require that workers give up their comfort zones and seek out new social