Identify an Unknown - Experiment With Chemical Reactions

Identify an Unknown - Experiment With Chemical Reactions One exciting aspect of chemistry is that it explores how substances combine to form new ones. While a chemical reaction involves change, the atoms that are the basic building blocks of matter arent changed. They simply recombine in new ways. Students can explore how chemical reactions can be used to help identify the products of chemical reactions. Rather than randomly mix chemicals together, using the scientific method can help better understand what is occurring. Overview Students will learn about the scientific method and will explore chemical reactions. Initially, this activity allows students to use the scientific method to examine and identify a set of (nontoxic) unknown substances. Once the characteristics of these substances are known, the students can use the information to drawinference to identify unknown mixtures of these materials. Time Required: 3 hours or three one-hour sessions Grade Level: 5-7 Objectives To practice using the scientific method. To learn how to record observations and apply the information to perform more complex tasks. Materials Each group will need: plastic cupsmagnifying glass4 unknown powders in 4 plastic baggies:sugarsaltbaking sodacorn starch For the entire class: watervinegarheat sourceiodine solution Activities Remind students that they should never taste an unknown substance. Review the steps of the scientific method. Although the unknown powders are similar in appearance, each substance has characteristic properties that make it distinguishable from the other powders. Explain how the students can use their senses to examine the powders and record properties. Have them use sight (magnifying glass), touch, and smell to examine each powder. Observations should be written down. Students may be asked to predict the identity of the powders. Introduce heat, water, vinegar, and iodine. Explain the concepts chemical reactions and chemical change. A chemical reaction takes place when new products are made from the reactants. Signs of a reaction could include bubbling, temperature change, color change, smoke, or change in odor. You may wish to demonstrate how to mix chemicals, apply heat, or add indicator. If desired, use containers with labeled volume measurements to introduce students to the importance of recording quantities used in a scientific investigation. Students can put a specified amount of powder from the baggie into a cup (e.g., 2 scoops), then add vinegar or water or indicator. Cups and hands are to be washed between experiments. Make a chart with the following: What was the appearance of each powder?What happened when water was added to each powder?What happened when vinegar was added to each powder?Did all powders produce the same response?What happened when iodine solution was added to each powder?Why do you think this happened?If you predicted the identity of the powders, were your predictions correct? If not, how were they different?What are true identities of the mystery powders A-D?How did you determine the correct answer?Now, give the students a mystery powder made up using at least two of the four pure subtances. They are to test this mixture using the procedures they used on the pure substances. In addition, they may wish to design new experiments.AssessmentStudents may be evaluated on their ability to correctly identify the final unknown mixture. Points may be awarded for teamwork, staying on task, submission of data or a lab report, and ability to follow directions and follow safety rules.

American values from jamestown Essay Example For Students

American values from jamestown Essay Before England could settle the New World, it needed a Middle Class to fund private settlements and a millitary to protect those investments. Although the Spanish had a hundred year head start the English would in turn dominate the New World. This was all set in motion by King Henry VIIIs Act of Supremacy. King Henry VIII broke from the Cathloc Church because he wanted a divorce. While leaving he seized wealth by taking 1/4 of the land. He gave the land to his supporters who became the middle class. The nobles opposed the siezing of land but did nothin gright away. Therefore the Act of Supremacy created the middle class. The middle class now had money to spend in the Europe. The Price Revolution had now started. Because of this Spanish money spread in Europe. Because people were making money wide spread inflation had started. Now European goods became expensiveto english nobles. Nobles had no new world gold and didnt benefit from inflation. Because nobles were going broke they asked Queen Elizabeth to raise the rent . The Queen later said No! This allowed the middle class to became rich. The middle class made mone by buying at old english price. and investing in Europe products. Nobles were tied to fix lands. The nobles decided to do something. The nobles closed all their land and this was called. The inclosure movement. The nobles then fenced in all their land. There fore peasants were forced to seek new work an a new life. The middle class had a investment to the new world. One promblem was the spanish controlled the seas. England competed with Spain for the seas. Power hungry Prince Phillip II of Spain wanted more. In a hope to increase power he proposed to Queen Elizabeth. Once again the Queen said no. Outraged King Phillip sent his fleet the Armada to attack England. However the smaller ships of England destroyed the armada in 1588. Now England had the sea controll for the next 400 years.

Soccer, The Golden Era Essay Example | Topics and Well Written Essays - 500 words

Soccer, The Golden Era - Essay Example The season went down well for months, and after it was over the approach changed and instead it was merged the selection of league (Mauricio 36). They were divided into A- League teams this league was named along Fifa’s recognition. In the same year, olympics took of, hosted by Atlanta, the men in the olympic did not perform well as it was expected, women performed their best and worn in the olympics that year. Then there after, it was soccer, this tournament had a huge number of fans from every corner of the world during the final day of the match. The success of the women in both games motivated the U.S organizing comittee that was taking care of the whole event (Richard 31). The organising body said, â€Å"it will be ready to support any games especially soccer, to improve the talents of people out their and also recognize were their is an effort made towards success.† Meanwhile, the world cup 1998, was about to kick of, and the qualifications were also in a process. The first time that U.S won, was back in the year 1977, this was the first time for U.S to qualify without involving Mexico (William 17). This was a success, and they had to work smart to make sure they retain the posion again. Some of the main team players were also from different states, but all determined to win in every game. FIFA provided coaches kits, and also playing grounds with large holding capacities, reason being the number of fans was growing at a high rate. In 1999, had considerable success stories, but in this same year women’s, soccer was set to begin (James 25). The women’s energy and the determination made people to have high expectations on them the team tied up for the first position before they were to go for the finals. The team, which was made up of youths, had a loyal fan base which was peaceful and also excellent sportsmanship, and respect. The team was the ambassador for young girls as their role

Legal status of foreign citizens, stateless persons and legal entities Assignment

Legal status of foreign citizens, stateless persons and legal entities in the field of property relations in Uzbekistan - Assignment Example Finally, thÐ µ papÐ µr will discuss thÐ µ concÐ µrns and problÐ µms thÐ µ forÐ µign invÐ µstors havÐ µ to dÐ µal with. UzbÐ µkistan and othÐ µr CÐ µntral Asian countriÐ µs sÐ µÃ µm to bÐ µ forgottÐ µn by most ЕuropÐ µan forÐ µign invÐ µstors whÐ µn looking for a placÐ µ to invÐ µst thÐ µir capital. This is truÐ µ Ð µvÐ µn though thÐ µ CÐ µntral Asian rÐ µpublics arÐ µ stratÐ µgically locatÐ µd and land-lockÐ µd bÐ µtwÐ µÃ µn ЕuropÐ µ and Asia. ThÐ µ quÐ µstion arisÐ µs if it is so bÐ µcausÐ µ thosÐ µ tÐ µrritoriÐ µs arÐ µ gÐ µographically quitÐ µ far from ЕuropÐ µ, bÐ µcausÐ µ of a fÐ µar that CÐ µntral Asia doÐ µs not offÐ µr a sÐ µcurÐ µ Ð µnvironmÐ µnt for forÐ µign invÐ µstmÐ µnts or simply bÐ µcausÐ µ of not having Ð µnough information about thosÐ µ countriÐ µs, thÐ µir invÐ µstmÐ µnt lÐ µgislation and thÐ µir actual capability of Ð µnforcing such lÐ µgislation. ThÐ µ purposÐ µ of the current papÐ µr is to providÐ µ introductory information about thÐ µ invÐ µstmÐ µnt lÐ µgislation of UzbÐ µkistan, its implÐ µmÐ µntation in practicÐ µ and to point out spÐ µcific problÐ µms thÐ µ forÐ µign invÐ µstors havÐ µ to dÐ µal with oncÐ µ placing thÐ µir invÐ µstmÐ µnt in this country. ThÐ µ paper will introducÐ µ somÐ µ basic facts concÐ µrning thÐ µ transfÐ µr of intÐ µrnational capital and thÐ µ main mÐ µans of intÐ µrnational invÐ µstmÐ µnt protÐ µction in addition to discussing thÐ µ currÐ µnt invÐ µstmÐ µnt lÐ µgislation and thÐ µ problÐ µms connÐ µctÐ µd with its application in practicÐ µ. ThÐ µ transfÐ µr of cross-bordÐ µr invÐ µstmÐ µnts has bÐ µcomÐ µ a daily rÐ µality of today’s morÐ µ and morÐ µ globalizÐ µd world. In ordÐ µr to promotÐ µ intÐ µrnational invÐ µstmÐ µnt Ð µxchangÐ µ, thÐ µ statÐ µs insist on mutual facilitation of transfÐ µr of intÐ µrnational capital and arÐ µ trying to takÐ µ all advantagÐ µs connÐ µctÐ µd with thÐ µ inflow of forÐ µign invÐ µstmÐ µnts. For dÐ µvÐ µloping countriÐ µs, thÐ µ placÐ µmÐ µnt of forÐ µign invÐ µstmÐ µnt in thÐ µir tÐ µrritoriÐ µs doÐ µs not mÐ µan only acquiring financial capital, but also

The Story we Tell :: essays research papers

America and Race have a long and entangled history. The concept of Race, like America is a recent invention. Race is an idea constructed by society to further political and economic goals. Race was never just a matter of how you look, it's about how people assign meaning toward how you look. It is ironic that a nation that takes great pride in one the foundation â€Å"All men are created Equal† can at the same time portray the idea of Race in such a scale that would repress and kill so many people. In this essay I will address what necessitated the creation of the story of race in American history. In the beginning of colonial America people used religion and wealth to define status. As the years progressed fewer people migrated to America. This resulted in a labor shortage of indentured servants. Farmers turned to the transatlantic slave trade, and started replacing indentured servants with African slaves. African slaves worked for nothing, could be easily identified by their skin separating them from indentured servants, and were valued for their farming skill. Plantation owners found what they an ideal and endless labor supply and developed the first slave system where all slaves shared a common appearance and ancestry. The abundance of this new labor source brought poor whites new rights, opportunities, and a sense of superiority for whiteness. Many were elevated to manager’s plantations and bounty hunters. White societies for the first time started to identify themselves with each other not based on wealth or status because they were white. As slave labor increased, slavery became inherently identified with blackness. This perpetuated white Americans belief that Africans were a different kind of person and stimulated the theory that Africans maintained a "natural" inferiority. This theory of "natural" inferiority rationalized for many white Americans the stealing of Indian lands. Indians, another â€Å"racially inferior† group, were initially viewed as naturally white. They explained they were tan because of exposure to the sun. Many felt that they were good human material, and the problem was not race but culture, that the Indians were primitive but they could be civilized. Whites sought to civilize Indians though English education and Christian religion, turning hunters into farmers and businessmen. They tried to assimilate them into American culture. The "civilization" process and way of life began to be seen as the only way for Indians to live in peace with whites.

Fiscal Policy Essay

The United States impacts various policies not only at home but abroad. It has been a powerhouse for many years, and its strengths and weaknesses impact other countries. The deficit, surplus, and debt are three major areas influencing these policies. These three factors have a huge impact on many areas we will discuss. These include taxpayers, the future of Social Security and Medicare users, the unemployed, a University of Phoenix student, the United States’ financial reputation on an international level, a domestic automotive manufacturing, or exporter, Italian clothing company, or importer and Gross Domestic Product (GDP). Italian Clothing Company The United States’ deficit, surplus, and debt play a factor a role in the conduct of business with any Italian clothing company. Italy relies on its manufacturing exports to provide for its economy, and the United States ranks as one of one of its prolific export partners. According to Economy Watch Content (2010), Italy’s famous brands such as Armani, Valentino, Versace, and Prada have created a niche in the global marketplace where there is a huge demand for high quality and superior goods. According to Colander (2010), the United States has run a trade deficit in the last 40 years. If the U.S. is unable to purchase from Italy, this affects the Italian economy. Financial Reputation of the United States on an International Level The U.S.’s deficit, surplus and debt impact the financial reputation of the United States on an international level because these are factors that promote or slow economic growth, future prosperity and foreign policy. The United States’ debt is the largest in the world for a single country, which has caused the financial reputation and creditworthiness of the United States to suffer (Amadeo, 2013). The dollar is considered to be a global currency and the one primarily used in international transactions and trade. When foreign investors lose confidence in the U. S. Government’s ability to manage the budget and pay off their debt, they raise interest rates on loans for the added risk. Government is  no longer able to borrow at affordable rates. Demand for investing in U.S. treasuries diminishes, lowering bond ratings and the value of the dollar. When the value of the dollar decreases, the dollar becomes less desirable, and foreign investors get paid back in currency that is worth less, which damages the special role of the dollar and the financial reputation of the United States (Boccia, 2013). Tax Payers To repay the nation’s debt budget makers frequently visit the option of higher taxation of the wealthy and businesses. Individuals and Corporations fear this option because staffing and insuring becomes more costly hurting the bottom line. A contributing factor to the current state of the U.S. economy is the gradual decline in taxes that the wealthy must pay. The U.S. must reduce the deficit or the debt will grow, and could become very costly to taxpayers possibly having to reach in their own pockets to pay off the debt. When the economy is doing well and the unemployment rates are low, the economy should be in decent standing due to the fact that the newly employed taxpayers have once again began paying into the taxes, but they also are stimulating the economy by spending their money and paying sales taxes. Future Social Security & Medicare Users According to the 2010 Trustees Report â€Å"the programs face massive permanent annual deficits starting in just five years. Coupled with a Congressional Budget Office report predicting Social Security and Medicare expenditures to increase around 75% by the year 2030, economists seem to have no certain answers now (John, 2010).† Social Security and Medicare benefits have their own funds so they do not affect one another nor does any other debt affect them. Social funds such as these have their own funding scheme that’s not tied to other federal bodies or accounts (Mankiw, 2011). A domestic automotive manufacturing (exporter) The effect that the U.S.’s deficit, surplus and debt have on a domestic automotive manufacturing exporter starts with the decline in auto sales. The deficit in the economy is followed by a decline in spending and lowered auto sales. A decline in auto sales reduces employment due to lower demand and adds to trade deficits. When the U.S. is unable to sell to other countries  we are forced into a surplus. Businesses fail leading to government bailouts. The government spends money going into debt to save these companies. Unemployed Individuals The deficit affects unemployed individuals because the people who need help, cannot get it, or cannot get enough to help supplementing their income until they find employment. A surplus provides help with unemployment benefits; WIC and other programs. Debt leads to higher taxes, making sustainability difficult for themselves and their families. University of Phoenix Student The deficit affects a University of Phoenix student because funding for financial aid could be compromised leading to more private loans. Loans become expensive, costing the student more. The surplus affects a University of Phoenix student by providing additional resources for school funding and programs. Debt means not having enough money to fund schooling leading to higher personal debt. GDP GDP is affected by deficits, levels of debt and budget surpluses. When the U.S. runs a high deficit, debt levels increase putting pressure on economic growth. The Reinhart/Rogoff research concluded that when a country’s gross debt exceeds 90% of GDP, â€Å"median growth rates fall by one percent, and average growth falls considerably more† (Sahadi, 2013). Budget surpluses impact GDP growth positively by providing additional resources for the government to invest in the country’s economy. Conclusion The U.S. government’s handling of federal budgets affects individuals and businesses alike worldwide from students to major corporations. Deficits lead to debt burdening the economy, negatively impacting nearly every aspect of the financial world. A surplus shows financial responsibility positively affecting the economy and creating prosperity. References Amadeo, Kimberly (Feb. 2013). What the U.S. Debt Is. Retrieved from http://useconomy.about.com/od/fiscalpolicy/p/US_Debt.htm Boccia, Romina (Feb.2013). How the United States’ High Debt Will Weaken The Economy And Hurt Americans. Retrieved from http://www.heritage.org/research/reports/2013/02/how-the-united-states-high-debt-will-weaken-the-economy-and-hurt-americans Colander, D. C. (2010). Macroeconomics (8th ed.). Boston, MA: McGraw-Hill/Irwin. Italy Trade, Exports and Imports. (2010, March 27). Retrieved from http://www.economywatch.com/world_economy/italy/export-import.html John, D. C. (2010). 2010 Social Security Trustees Report Continues to Show the Urgency of Reform. Retrieved from http://www.heritage.org/research/reports/2010/08/2010-social-security-trustees-report-continues-to-show-the-urgency-of-reform Mankiw, G. (2011). Principles of Microeconomics (6th ed.). Mason, OH: Cengage Learning Sahadi, J. (2013, April 17). Debt’s impact on growth: Latest study doesn’t settle debate. Retrieved from http://money.cnn.com/2013/04/17/news/economy/debt-deficits/index.html

Deaf Again, Part 1 Questions - 794 Words

Deaf Again, Part 1 Questions (Introduction - Chapter 6, pp. iii - 57) Introduction The book â€Å"Deaf Again† is unique because the author has been on both sides of the spectrum. He had been hearing for some time and now is Deaf. He shows each viewpoint and doesn’t make it just for hearing or just for the Deaf. This author is also unique in showing his feelings for both hearing and also being Deaf. Chapter 1 †¨ 1. The medical care facility should have had an interpreter there at the childbirth. I think it was absolutely ridiculous for Sherry to have to go through natural childbirth and have the incident with the air not being on as well. The doctors and nurses should have also been properly trained and more compassionate. Chapter 2 2.†¦show more content†¦Pick one issue that you find disturbing and/or thought provoking and explain in several sentences how this particular one affected you. 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