Thursday, March 19, 2020
Christmas Tree Elephant Toothpaste Chemistry Demo
Christmas Tree Elephant Toothpaste Chemistry Demo Did you know you can do the elephant toothpaste demonstration to make a Christmas tree holiday chemistry demonstration? Its extremely easy, plus it makes an excellent demo to do before the holiday break! Christmas Tree Elephant Toothpaste Materials There are a few ways to set this up to make a Christmas tree. The key is to add green food coloring to get the tree effect and then either perform the demonstration in an erlenmeyer flask, which naturally produces the tree shape, or else perform the reaction in a tube with a tree template placed over it. You can make a tree shape from aluminum foil, with slots cut up the side and an opening at the top to force the foam from the reaction out into the proper shape. 50 ml of detergent100 ml of 30% hydrogen peroxide10 ml of a saturated solution of potassium iodidegreen food coloringerlenmeyer flask or homemade Christmas tree model Procedure Place the erlenmeyer or your Christmas tree container on the lab bench. Add the detergent, peroxide and food coloring.Pour the potassium iodide solution into this mixture to catalyze the reaction.Optionally, touch a glowing splint to the foam tree to relight the splint and demonstrate that the bubbles are filled with oxygen. Safety Information Hydrogen peroxide is an oxidizer. This demonstration uses a higher concentration of hydrogen peroxide than the home variety, which means you need to wear gloves to protect your hands against an accidental splash or spill, which could cause a burn. Chemistry Hydrogen peroxide is catalytically decomposed into water and oxgen. This is a nice example of an exothermic reaction. The audience will be able to see steam rising from the foam. The overall equation for the elephant toothpaste chemical reaction is: 2 H2O2(aq) → 2 H2O(l) O2(g) The decomposition reaction of the hydrogen peroxide into water and oxygen is catalzyed by the iodide ion. H2O2(aq) I-(aq) → OI-(aq) H2O(l) H2O2(aq) OI-(aq) → I-(aq) H2O(l) O2(g) Dishwashing detergent is added to capture the oxygen and form bubbles. This is an exothermic reaction which may produce steam. Kid-Friendly Version of the Demonstration If you cant obtain 30% hydrogen peroxide or simply want a demonstration that is safe enough for kids to perform, you can perform an easy variation of this demonstration: detergentwarm water3% hydrogen peroxide (the type sold at pharmacies)pack of active yeast (from a grocery store)green food coloring In an erlenmeyer or tree-shaped container, mix together 1/4 cup detergent, 1/2 cup of the 3% hydrogen peroxide and several drops of green food coloring.In a separate container, stir the packet of yeast into a small amount of warm water. Allow 5 minutes for the yeast to activate before proceeding with the demonstration.Perform the demonstration by pouring the yeast mixture into the peroxide and detergent mixture. This reaction does not produce the huge volume of foam of the traditional elephant toothpaste reaction, but all of the chemicals are safe enough for kids to handle. In this reaction, yeast catalyzes the decomposition of hydrogen peroxide into water and oxygen gas: 2H2O2 → 2H2O O2(g) As in the other reaction, the detergent captures the oxygen to form bubbles. Less foam is produced because there is a smaller amount of hydrogen peroxide to decompose. Learn More Red and Green Color Change Christmas DemonstrationElephant Toothpaste VariationsBorax Crystal Snowflake Decoration
Monday, March 2, 2020
Rules for Japanese Letter Format
Rules for Japanese Letter Format The difference between written language and conversational language in Japanese is much greater than in English. Japanese letters often use classical grammar patterns which are seldom used in conversation. Although there are no particular rules when writing to close friends, there are many set expressions and honorific expressions (Keigo) used in formal letters. A conversational style is not usually used when writing formal letters. Opening and Closing Words The opening and closing words in letters, which are similar to Englishs Dear and Sincerely etc., come in pairs. Haikei æ‹ å•“ - Keigu æ• ¬Ã¥â€¦ ·The most common pair used in formal letters. Women sometimes use Kashikoã ‹ã â€"ã “ as a closing word instead of Keigu.Zenryaku å‰ ç• ¥ - Sousou è ‰ã€…This pair is less formal. It is usually used when you dont have time to write a long letter, so that the preliminary greetings are omitted. Zenryaku literally means, omitting the preliminary remarks. Preliminary Greetings Ogenki de irasshaimasu ka. (very formal)ã Šå…Æ'æ °â€"㠧ã „ら㠣ã â€"ã‚Æ'㠄㠾㠙㠋。Have you been doing well? Ogenki desu ka.ã Šå…Æ'æ °â€"㠧㠙㠋。Have you been doing well? Ikaga osugoshi de irasshaimasu ka. (very formal)ã „ã ‹ã Å'ã Šé Žã â€Ã£ â€"㠧ã „ら㠣ã â€"ã‚Æ'㠄㠾㠙㠋。How have you been? Ikaga osugoshi desu ka.ã „ã ‹ã Å'ã Šé Žã â€Ã£ â€"㠧㠙㠋。How have you been? Okagesama de genki ni shite orimasu. (very formal)㠊㠋㠒㠕㠾㠧å…Æ'æ °â€"㠫ã â€"㠦㠊り㠾㠙。Fortunately Im doing well. Kazoku ichidou genki ni shite orimasu.Ã¥ ® ¶Ã¦â€" ä ¸â‚¬Ã¥ Å'å…Æ'æ °â€"㠫ã â€"㠦㠊り㠾㠙。The whole family is doing well. Otegami arigatou gozaimashita.ã Šæ‰‹ç ´â„¢Ã£ ‚ã‚Šã Å'㠨ã †ã â€Ã£ â€"㠄㠾ã â€"㠟。Thank you for your letter. Nagai aida gobusata shite orimashite moushiwake gozaimasen. (very formal)é• ·Ã£ „éâ€"“ã â€Ã§â€ž ¡Ã¦ ²â„¢Ã¦ ± °Ã£ â€"㠦㠊り㠾ã â€"㠦熳ã â€"è ¨ ³Ã£ â€Ã£ â€"㠄㠾㠛ん。I apologize for neglecting to write for such a long time. Gobusata shite orimasu.ã â€Ã§â€ž ¡Ã¦ ²â„¢Ã¦ ± °Ã£ â€"㠦㠊り㠾㠙。Im sorry I havent written for a long time. These expressions or seasonal greetings can be combined in a variety of ways to form the preliminary greeting. The Japanese have long admired the seasonal changes, therefore it seems too abrupt to start a letter without the proper seasonal greeting. Here are some examples. Gobusata shite orimasu ga, ogenki de irasshaimasu ka.ã â€Ã§â€ž ¡Ã¦ ²â„¢Ã¦ ± °Ã£ â€"㠦㠊り㠾ã ™ã Å'〠㠊å…Æ'æ °â€"㠧ã „ら㠣ã â€"ã‚Æ'㠄㠾㠙㠋。Im sorry I havent written for a long time, but have you been doing well? Sukkari aki rashiku natte mairimashita ga, ikaga osugoshi de irasshaimasu ka.㠙㠣ã ‹ã‚Šç §â€¹Ã£â€šâ€°Ã£ â€"ã 㠪㠣㠦㠾ã „り㠾ã â€"ã Ÿã Å'〠㠄㠋ã Å'ã Šé Žã â€Ã£ â€"㠧ã „ら㠣ã â€"ã‚Æ'㠄㠾㠙㠋。It has become very autumn like; how have you been? Samui hi ga tsuzuite orimasu ga, ikaga osugoshi desu ka.Ã¥ ¯â€™Ã£ „æâ€" ¥Ã£ Å'ç ¶Å¡Ã£ „㠦㠊り㠾ã ™ã Å'〠㠄㠋ã Å'ã Šé Žã â€Ã£ â€"㠧㠙㠋。Cold days continue; how have you been? Final Greetings Douka yoroshiku onegai itashimasu.㠩㠆㠋よ゠ã â€"ã ã Šé ¡ËœÃ£ „ã â€"㠾㠙。Kindly look after this matter for me. ~ ni yoroshiku otsutae kudasai.㠫よã‚ ã â€"ã ã Šä ¼ ã ˆã ã ã •ã „。Please give my regards to ~. Minasama ni douzo yoroshiku.皆æ §ËœÃ£ «Ã£ ©Ã£ †ã žã‚ˆã‚ ã â€"ã 。Please give my regards to everyone. Okarada o taisetsu ni.ã Šä ½â€œÃ£â€šâ€™Ã¥ ¤ §Ã¥Ë†â€¡Ã£ «Ã£â‚¬â€šPlease take care of yourself. Douzo ogenki de.㠩㠆㠞㠊å…Æ'æ °â€"㠧。Take care of yourself. Ohenji omachi shite orimasu.ã Šè ¿â€Ã¤ ºâ€¹Ã£ Šå ¾â€¦Ã£ ¡Ã£ â€"㠦㠊り㠾㠙。I look forward to hearing from you.
Saturday, February 15, 2020
Constructing a Sales Plan Essay Example | Topics and Well Written Essays - 2000 words
Constructing a Sales Plan - Essay Example Known to bridge the gap between a mobile phone and a PC, the technology is aimed at being pre-programmed into smart phones in collaboration with the manufacturers (A, 2013). Thus, the first step of the sales plan would be to pitch these cellphone manufacturers the utility of picdeck and how it can help them boost sales. After the segment and target market has been identified, a Sales Plan has to be derived to give direction to the overall marketing plan. A sales plan identifies the mediums, through which sales can be generated, the volume of sales that has to be achieved in specified period of time and other sales related details that enable the organization, Ontella in our case, to communicate these to the sales staff. Effective communications of these sales objectives provide clarity to the people regarding the aims of their efforts, in turn increasing the chances of success. In the smart age of today, speed and efficiency has become the core need of every human being. With the advent of camera phones, the transfer of pictures and videos has become a routine rather than a trend. Whether it is a teenage girl showing off her freshly brought dress to her best friend or a real estate agent showing the client an interior of the house, pictures have become the new and clearer form of communication. Currently requiring the use of a data cable or an internet facility to transfer pictures, PicDeck offers superior customer value through making this transfer wireless, easy and instantaneous. This market gap between customer expectation and satisfaction was identified by Ontella in order to come up with PicDeck. For example, there is a middle aged mother of teenage children who uses a digital camera to capture and store memories from her children’s life may they be birthdays, award ceremony, first bike ride etc. this woman finds gadgets a hassle and seeks
Sunday, February 2, 2020
The Differences Between Romanticism and Neoclassicism Essay
The Differences Between Romanticism and Neoclassicism - Essay Example This essay stresses that Neoclassicism in the arts, as the name indicates, is inclined on reverting to Hellenistic art styles characterized by symmetry; calmness and stillness; importance of social and political concerns; discipline and control; conformity and rationality. This art movement was the result of the renewed interest and the sense of giving importance to classical art. These characteristics and the definition of Romanticism and Neoclassicism classify the major differences between the two art movements. These differences substantiate that these art movements are conflicting during the time these two art styles emerged in the art scene. Neoclassicism imposes restraint and conformity while Romanticism breaks free from the constraints of tradition and promoted freedom in conveying personal views and emotions. Moreover, Neoclassicism was rearing towards the society and its concerns such as politics while Romanticism favors idiosyncrasy. According to the discussion the differences of Romanticism and Neoclassicism is evident in the works of Romantic painter Eugene Delacroix and Neoclassical painter Jean Auguste Dominique Ingres particularly their portrait of violinist Niccolo Paganini. Ingres’ depiction of Paganini shows the violinist in a very formal and stiff pose, which is very much opposite to Delacroix’s portrayal of the violinist showing Paganini while playing the violin. The striking contrasts between Ingres’ Paganini and Delacroix’s version clearly differentiates the two art styles and best represents the artworks of the two art movements. These opposing two art movements resulted from the events during that period and compelled by some prominent figures in the society and discoveries in well-known places at that time. Influences manifest in the works of artists belonging to Romanticism and Neoclassicism.
Saturday, January 25, 2020
Mr. Smith Goes to Washington Essay -- film analysis, reassuring image
Mr. Smith is portrayed as an honest man with strong opinions. He is the ideal politician in an ideal society. The film Mr. Smith Goes to Washington depicts a "reassuring image" that happens to be "an image of the past" (Wheeler). However, in today's legislature, people like Mr. Smith are rare due to the fact that a politician's primary goal is re-election. The good of the people may come as another intention of a politician, but it is always secondary to "bringing home the pork." There should be more people like Mr. Smith because the legislature would be able to make decisions more effectively and efficiently, rather than how slowly they currently operate. This is an unfortunate truth, yet it is how our society has been shaped to operate. This becomes apparent after close examination of the United States legislature today and viewing of the film Mr. Smith Goes to Washington. Mr. Smith was appointed to be a Senator on a whim. He was the leader of the Boy Rangers with no political experience. He was principled with a clear view on right and wrong. Mr. Smith took his ideals as far as risking his career when he did not compromise in order to maintain his beliefs. In addition, special interest groups did not impact Mr. Smith's decisions. He was untouched by the corruption that he learned existed in the legislature. Yet upon discovering it, he did not change himself. Mr. Smith did not place any emphasis on re-election and did not care if people thought negatively about him as long as he remained with his values. Mr. Smith's values make him unique and give him the ability to be noticed within the legislature. The manner in which the United States legislature is currently set up allows someone similar to Mr. Smith to thrive in society... ... 11 Nov. 2009. Web. 3 Feb. 2014. 11/mr-smith-goes-to-washington-discussion.html>. Hudak, John. "Lessons from the Shutdown: Pork and Earmarks Help Break Gridlock." Brookings. Brookings, 30 Oct. 2013. Web. 4 Feb. 2014. 10/29-shutdown-lessons-the-benefits-of-pork-hudak>. Johnson, Eliana. "Shutdown Deal Includes Pork-Barrel Spending." National Review Online. NRO, 16 Oct. 2013. Web. 4 Feb. 2014. shutdown-deal-includes-pork-barrel-spending-eliana-johnson>. Panahi, Heather. "Common Criticisms of Legislatures." Feb. 2013. File last modified on Feb. 2013. PDF file. "radical." Def. 1-10. Dictionary.com. Dictionary.com, n.d. Web. 3 Feb. 2014. .
Thursday, January 16, 2020
Narcotic Drugs
In this paper I will discuss the details the classification of narcotic drugs in criminal law, forensic evidence needed to obtain a conviction in a drug case. The term narcotic implies a state of lethargy or sluggishness. Pharmacologists classify narcotic drugs as substance that bring relief from pain and produce sleep. Unfortunately narcotic has come to be popularly associated with any drugs that is socially unacceptable, as a consequence of this incorrect usage many drug are improperly call narcotics. Most drug laws in the United States incorrectly designated marijuana as a narcotic; even now many drug controlled laws in the United States including federal law, classify cocaine as a narcotic drug (Saferstein 2011, p193). A large number of drug users are in daily contact with a range of criminal justice organizations. The police enforce laws relating to illegal drugs and unlawful activities that surround drug use. It is important to recognize that relationship between drug and crime are unclear. Drug use leads to crime; second crimes leads to drug use and third drugs and crime are related to social force (Hughes, p, 75, 2006). When a forensic chemist picks up a drug specimen for analysis, he or she can expect to find just about anything, so all contingencies must be prepared for. The analysis must leave no room for error because its results will have a direct bearing on the process of determine the guilt or innocence of a defendant. There is no middle ground in drug identification either the specimen is a specific drug or its not and once a positive conclusion is drawn, the chemist must prepared to support and define the validity of the results in the court of law (Saferstein 2011, p204). When someone is accused of a crime involving drugs, more than likely the drugs were taken from their person or property will go from hand to hand as they are processed, analyzed, stored, and sent to the courtroom as evidence. Every time a change of hands occurs, it must be documented to ensure that the evidence was not tampered with or handled negligently. The process that evidence goes through from the time it is seized to the time it reaches the courtroom is called the â€Å"chain of custody. Implementing chain of custody is necessary it’s the start of the foundation of the evidence in question, by showing the absence of alteration, substitution, or change of condition. Specifically, foundation testimony for tangible evidence requires that exhibits be identified as being in substantially the same condition as they were at the time the evidence was seized, and that the exhibit has remained in that condition through an unbroken chain of custody. For example, suppose that in a prosecution for possession of illegal narcotics, police sergeant A recovers drugs from the defendant; A gives police officer B the drugs; B then gives the drugs to police scientist C, who conducts an analysis of the drugs; C gives the drugs to police detective D, who brings the drugs to court. The testimony of A, B, C, and D constitute a â€Å"chain of custody†for the drugs, and the prosecution would need to offer testimony by each person in the chain to establish both the condition and identification of the evidence, unless the defendant stipulated as to the chain of custody in order to save time. Conclusion: Narcotic drugs will forever be around. It’s a complex problem throughout society. It affects people from the newborn stage to old age. Narcotic drugs, takes an enormous toll on lives and communities, especially in developing countries and its contribution to the overall burden and will to increase in the future.
Wednesday, January 8, 2020
Entrepreneurial Behavior and Perspective - 1553 Words
Name: Junie D. Bonifacio Date: December 1, 2012 Topic Title: Entrepreneurial Behavior and Perspective Material Title: Defining and Measuring Entrepreneurship Summary The reading focuses on the definition of entrepreneurship in different contexts and on measuring the level of entrepreneurial activity. Entrepreneurship has been defined differently through neo-classical and economic literatures. Theoretical definitions of entrepreneurship reflect a diverse set of ideas about the role of entrepreneurship in the economy, involving aspects such as innovation, uncertainty-bearing, opportunity-seeking, and management. Entrepreneurship is often used without a precise definition and it may not always be completely clear what the†¦show more content†¦The entrepreneur can be viewed as an owner of a technology producing endeavor that can disrupt current and existing processes in the industry. A new product or technology that has been produced through market study, research and development, product development, and product launch can be an output of an entrepreneur’s venture into an opportunity as a beginning. In the current Philippine setting , I believe the market is saturated mostly by entrepreneurs that are mixture of both Knight’s and Schumpeter’s. An example of a area of entrepreneurship nowadays would be the firms in the Knowledge Process Outsourcing industry and the Business Process Outsourcing Industry. Firms today exercise both concept on a case-to-case basis, depending on the contract with the client and the business that is being undertaken. 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