Magnesium calcium lithium, Sodium, and Potassium Essay Example for Free

Magnesium calcium lithium, Sodium, and Potassium Essay In this lab, six different metals were tested for their reactivity in water. From less reactive to most reactive, the metals were as follows: Aluminum, Magnesium, Calcium, Lithium, Sodium, and Potassium. A pattern found in the periodic table explaining the reactivity of metals is the further down in a family, and the further left in a period, the more reactive the metal will be. Aluminum and Magnesium were both the less reactive. Neither of the metals produced hydrogen, or not enough to have a positive test to prove it was there. Metals + H O H + Metal Hydroxide Calcium gave off a large amount of Hydrogen gas. Lighting a splint, placing it in the test tube, and hearing a loud pop proved this. When the calcium was placed in the water, it caused the temperature to rise to such a high level it was not possible to hold with bare hands. This could be because the electrons are moving so quickly that it causes the temperature to rise. The calcium formed a white, powder-like precipitate at the bottom of the test tube. Lithium, Sodium, and Potassium all had very violent reactions in water. Phenolphthalein was added to the beakers after the metals had reacted, and the water turned a pink/ purple color proving that these metals make bases, and therefore have a pH between eight and. Common reactions between metals were they all formed hydrogen gas, even if it was a very small amount. Lithium, Sodium, and Potassium all tested positive to be a base with phenolphthalein, and all had an oily surface. A pattern found in the periodic table explaining the reactivity of metals is the further down in a family, and the further left in a period, the more reactive the metal will be. This is because the elements in period I, Lithium, Sodium, and Potassium, only have one valence electron, and it is quite simple to lose it. Also, the further down the family, the more the ionization energy decreases because of the shielding effect (the inner electrons block the attraction of the nucleus for outer electrons) and atomic radius (the greater the distance between the nucleus and the outer electron). However, the further to the right of the periodic table, the more the ionization energy increase because of the nuclear charge, electron arrangement ( an electron in a full of a half full energy level requires additional energy to be removed), and atomic radius. This explains why Aluminum was the least reactive, and Potassium was the most reactive.

time management Essay -- essays research papers

Time Management   Ã‚  Ã‚  Ã‚  Ã‚  The way a person manages time effects the efficiency of their life. There are many ways that will help in time management. College students for example have many responsibilities. The top priority being school. Students must have time to go to class and show their best of their abilities to finish all work that needed to be done. Some students may have to fit work into their daily schedule. As Rock-Richardson describes,  ¡Ã‚ §As an undergrad, I put my self through two solid years of full-tuition college by working as a daycare provider [ ¡K] ¡Ã‚ ¨ (Rock-Richardson 12). In order to be successful at the tasks the student must eat properly and get enough sleep. The one thing that should be learned is motivation and the famous saying  ¡Ã‚ §Never give up. ¡Ã‚ ¨ If a task must be done and it is felt that there is no time, that is just the misunderstanding of time. The first step in beginning better time management is to write it into an organizer. An organizer is the most helpful notebook a student can purchase. Carol Kanar says,  ¡Ã‚ §Your schedule is the result of the inward decision you make to control events instead of letting events control you ¡Ã‚ ¨ (Kanar 93). For a student to remember important dates such as test dates they must be written down and observed. Major dates to remember are exam dates. There will be numerous tests and assignments during one quarter, which cannot be memorized. This organizing will help in figuring out how much study time the...

“The Destructors” by Graham Greene Essay

Graham Greene the author of â€Å"The Destructors† and Richard Connell the author of â€Å"The Most Dangerous Game† both used a similar mood in their stories. Connell placed his story on an island in the Caribbean that was dark and scary, it had a reputation of death and separation. Greene placed his characters in a post war zone in London where there seemed to be little hope of life. Greene’s setting was urban with many young English boys as his main characters; Connell contrasted that with a sole island with only two main inhabitants and a pack of dogs. Both authors wrote stories that have very troubled characters. The characters also reflect a dark mood to go along with the setting. The Credibility was reasonable for both stories and I believed both stories could happen. Rainsford and â€Å"T† were good characters and the setting a great deal influenced them both. I related more to the atmosphere of â€Å"The most Dangerous Game† but did not have any problem picturing either one while reading the stories. â€Å"The Destructors† took place in London post world war II 1939-1945 on Bank Holiday, which is a 3-day weekend that takes place in Britain a few times a year. â€Å"The Most Dangerous Game† took place on a remote tropical island in the Caribbean and was sometime after the First World War. The first similarity between the two stories is the dark mood that both setting portray, nighttime on an island in the middle of the ocean and post war stricken London. Another similarity is how both setting portray a holiday or vacation idea. The Setting of â€Å"The Most Dangerous Game† is exactly the kind of setting you would need to pull of the kind of â€Å"game† secluded from the day to day bother of other people who might be passing by, no law enforcement to bother you with the accusation of murder. â€Å"The Des tructors† setting is a little harder to believe that this could happen and that a group of kids could pull it off. I have done a lot of demolition and I know how hard it is and how long  it can take. Rainsford was a great hunter even before he got marooned on this island but I’m sure the fact that he was now the prey raised his level of survival necessity. If he was on the island and he needed to rebuild a boat to escape he might not have faired as well but that is only conjecture. With â€Å"T† his character is total based on the setting of the story. If you change the setting you will change â€Å"T† and his whole objective and attitude. The atmosphere or the pervading tone or mood of a place, situation in â€Å"The Destructors† was depressing and dark. I envision rubble and burnt remains of buildings all around with only a few homes left standing in the area. On the Island I see a wonderful tropical paradise that is very inviting although dark and lonely when Rainsford falls from the boat and a wonderful place to visit with lush forest and flowers with sandy beaches. This to me the biggest difference between the two stories, one is set in the busy c ity while the other is secluded. One symbol I see in â€Å"The Most Dangerous Game† is the Island being an image of being alone and needing to survive on your own, one man and his fight against one man. In â€Å"The Destructors† I felt like the symbol was the Wormsley Common Gang against the world or at least against Old Misery. This was a symbol of mans need to sometimes break the rules just because we can get away with it. Greene and Connell both used a similar mood in their stories. Connell placed his story on an island in the Caribbean that was dark and scary, it had a reputation of death and separation. Greene placed his characters in a post WWII zone in London where much hope for the future was lost. The setting for â€Å"The Destructors† was urban with many young English boys as his main characters; â€Å"The Most Dangerous Game† contrasted that with a lonely island with only two main inhabitants and a pack of dogs. References: Connell, R. (1924). The most dangerous game. Greene, G. (1954). The destructors.

The Ipod A Product Of Globalization - 2089 Words

Nov 24th, 2014 Andrea Rivero INR 3011 The 32 GB iPod video as a product of globalization The iPod, an mp3 player created by Apple Inc, is a product that exemplifies the impact and consequences of globalization in the economic and social aspect. The economy globalization, seen as the â€Å"intensification and stretching of economic connections across the world†, has shaped markets and political relations between countries (Snarr 37). On the other hand, cultural globalization has connected societies to the point where it cannot be said that a society is completely isolated and has uninfluenced from others (Steger 2012). In this paper, the iPod’s creation and development will be explained, its relation to integration of markets, the demographics and pay difference of manpower between countries, and the impact of the iPod in the integration of societies. Apple is a multinational company that currently exemplifies the power and development of globalization in the 21st century. Steven Wozniak and Steven Jobs in California founded Apple, previously called Apple Computer, in 1976. From that time until 2001, they designed and manufactured a few versions of the Mac computer. It wasn’t until 2001 that Apple introduced the iPod, a â€Å"palm-sized, hard-drive-based digital music player† (Reuters 2011). The iPod was the first gadget to incorporate a small enough driver that would fit in a compact device; the front wheel-shaped controller was also an innovation (Dedrick, et al). Since the iPodShow MoreRelatedThe Globalization And Ideology Of Apple Inc.1244 Words   |  5 PagesThe Globalization and Ideology of Apple Inc. Brief introduction to Apple In. Apple Inc. is an American high-tech multinational corporation engaged in researching, designing and producing electronic technology products (Wikipedia, 2013). In 2007, the company changed the name from Apple Computer Inc to Apple Inc. headquartered in Cupertino, California (Wikipedia, 2013). 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