The Effect Of Different Substances On The Freezing Essays

The Effect Of Different Substances On The Freezing Essays The Effect Of Different Substances On The Freezing Point Of Water Essays, Book Reports, Term Papers This essay The Effect Of Different Substances On The Freezing Point Of Water Essays, Book Reports, Term Papers has a total of 2601 words and 12 pages. The Effect of Different Substances on the Freezing Point of Water Period 4 January 19, 2012 The Effect of Different Substances on the Freezing Point of Water Introduction Water is essential for all life on Earth and covers 70% of the Earth surface. Water is a chemical substance composed of two hydrogen atoms bonded to one oxygen atom. Its chemical formula is H2O. Pure water is transparent, colorless and odorless. Water is mostly seen as liquid. However water can be found in all three states of liquid, solid, and gas depending on the temperature. At room temperature, water is a liquid. But it becomes solid (ice) when the temperature drops to 0oC or it turns into gas when the temperature rises to 100oC. The reason water changes its state is molecules have energy. Water molecules in a liquid form have more energy than in a solid form. They move around quickly. When the liquid cools down, water molecules slow down their movement and the energy is reduced. When the water temperature reaches around 0oC, the molecules almost do not move and stick together to form a solid - ice (Manahan, 2010). When water and ice are in contact with each other, two things hap pen that (1) ice molecules escape into the water (melting) and (2) water molecules are captured on the ice surface (freezing). When the rate of freezing is the same as the rate of melting, the amount of water and the amount of ice do not change. The ice and water are said to be in dynamic equilibrium. The balance point between freezing and melting of the two states of water is at 0oC (Wolf, 2010). But this balance between freezing and melting can easily be disrupt when either water or ice changes conditions. Baking soda, better known to chemists as bicarbonate of soda, sodium bicarbonate, sodium hydrogen carbonate, or sodium acid carbonate, is a chemical compound with a chemical formula of NaHCO3. Baking soda is a white solid and often appears as a fine powder with crystalline grains. Baking soda can form naturally. However, most baking soda sold in stores are man-made by combining carbon dioxide (an odorless gas) and soda ash (extract from sources like a mineral called trona and ashes of certain plants). As baking soda is formed by combining an acid (carbonic) and sodium hydroxide, it reacts with other chemicals as a mild alkali. Therefore, when it is mixed with acid, baking soda neutralizes the acid, breaks down proteins, and gives off carbon dioxide gas (commonly seen as bubbles) (Zukowski, 2009). Because of its chemical and physical properties, baking soda is used for a wide range of applications such as baking, cleaning, deodorizing, buffering, and fire extinguishing. Salt is a mine ral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of ionic salts. Salt is in a crystalline form but varies in color from colorless when it is pure to white, gray or brownish due to other natural mineral elements within the crystal. Salt is formed naturally and can be found everywhere in the world like underground and sea. There are many different types of salts. Salt is not only essential for human and animal lives but also often used to assist in various manufacturing and productions like textile dyeing, soap making and pottery production (Roman et al, 2011). When a substance like baking soda or salt is put into water, it is dissolved in the water. This is because the polarity of water molecules can attract the polar ionic compounds and separate the molecules of other substances. In this process, scientists term the substance to be dissolved as a solute and refer the water as the solvent the one that does the dissolving. The formed mixture is called a solution (Amora and Chu, 2010). Research has found that the freezing point of a solution is lower than 0oC, the freezing point of the pure water.

Claiming To Be and Stating That

Claiming To Be and Stating That Claiming To Be and Stating That Claiming To Be and Stating That By Maeve Maddox Recently I’ve noticed the phrase â€Å"stating to be† in contexts that call for either â€Å"claiming to be† or â€Å"stating that.† For example: This Buffalo, NY church has a plaque  stating to be  a nuclear weapon free zone.   Should you be approached by any persons stating to be appointed agency/representative of Qatar Airways, they should be considered as fraudulent. Be suspicious of emails stating to be from a financial institution, government agency, or anyone requesting account information, account verification, or banking access credentials.   The meaning of to state in these contexts is â€Å"to declare in words; to represent a matter.† Used with this meaning, the participle stating usually introduces a noun clause, not an infinitive, as in this example. The  scam  is usually introduced by a letter  stating that  the writer has access to huge  sums of government money ranging from $25 million to $80 million. The example about the plaque can be rewritten this way: This Buffalo, NY church has a plaque  stating that the church is a nuclear- weapon-free zone.   The verb claim, on the other hand, is often followed by an infinitive, as in these examples: The punishment for an individual falsely claiming to be a broker or salesperson is a fine of up to $20,000 or imprisonment up to six months, or both. A street firm employee  claiming to know  about the trades volunteered information to the SEC New. York office.  Ã‚   Before the pilot program the District paid ditchriders overtime, although claiming to believe that  their work qualified for the irrigation exemption. The verb claim is used with different meanings, but in the context of an assertion about credentials, knowledge, or belief, it conveys a connotation of dubiousness. The other two examples given at the beginning of this post can be improved by changing stating to claiming: Should you be approached by any persons claiming to be appointed agency/representative of Qatar Airways, they should be considered as fraudulent. Be suspicious of emails claiming to be from a financial institution, government agency, or anyone requesting account information, account verification, or banking access credentials.   At present, the odd construction â€Å"stating to be† brings up only 332,000 search results compared to 14,200,000 for â€Å"claiming to be† and 40,200,000 for â€Å"stating that.† However, a search limited to specific years indicates that â€Å"stating to be† has been rising in frequency on the Web since 1990. Bottom line: Generally speaking, claim and state are synonyms, but synonyms are not always interchangeable. Connotation matters, as does syntax. In the context of fraud, the phrase â€Å"claiming to be† is the better choice. Related post When a Synonym Isn’t Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Expressions category, check our popular posts, or choose a related post below:Direct and Indirect ObjectsWhat is Dative Case?The Difference Between "Un-" and "Dis-"

Schooling the World Term Paper Example | Topics and Well Written Essays - 1000 words

Schooling the World - Term Paper Example InSchooling the World: The White Man’s Last Burden, the main conflict as depicted in the film is that of traditional education versus contemporary education. Based on the film, it is evident that modern education has had a huge impact on most traditional societies such as Ladakh. To begin with, the fact that most schools offering contemporary education are located in major urban areas, has meant that families have to move near cities in order to secure their children admission to such schools. This has subsequently negatively impacted on their societies. Not only has led to separation of family members, but has also led to change of traditional roles. For instance, one woman in Ladakh village narrates how her children have moved to the nearest urban area in search for modern education for their children. This has in turn led to a change in the traditional duties (Black, 2010). Unlike before where it was males’ responsibility to take of their homes and feed the livestock , the widow is forced to do all these chores. On the same point, traditionalists and opponents of modern schooling also argue that in contrast to the past where education entailed teaching children moral education based on the religious principles of Buddhism, modern education is more focused on teaching children foreign culture and language (Black, 2010). This is regarded as a form of drainage of the traditions and heritage of most societies. As matter of fact, it is deemed as destruction of the viable seeds of tradition, thereby posing the danger of extinction of the traditional cultures. Additionally, the emphasis of modern education on the spirit of competition in school performance has also had a spill-over effect on the lives of most children attending such institutions. Most children are growing to live more self-centered lives, eroding the conventional rules and values of compassion and generosity within the

Using APA Style Assignment Example | Topics and Well Written Essays - 500 words

Using APA Style - Assignment Example ticular work would be helpful to me in future research because libraries could, ideally, play a huge part in alleviating issues of illiteracy and contribute to helping to close that achievement gap. Since much of my focus is in relation to public library systems this piece fits in nicely to see how libraries could make a difference and be perceived as a contributing service. This article was essentially a review of the reports of how the public libraries in England scored in a government endorsed inspection reports. It was used to determine if the policies implemented have benefited, hindered, or had no effect on the public libraries. It gives a clear listing of what qualifies a particular library as a good library, as well as, in turn, an understanding of what identifies a bad one.(Higgins, 2005) This article is interesting because it explains how other countries conduct their policies and administrations as it relates to the quality of their public libraries. What others attempt can be a wonderful indicator of what you might wish to emulate, or perhaps not ever duplicate. This book discusses how there are some unique changes occurring in the fields of public policy and administration. In this case it is a trend toward modern progressive values into public administration. The work focuses on areas including description of progressive values, the different ideologies behind those values, and how to evaluate the existing policies and make beneficial and constructive changes.(Box, 2008) I consider this a potentially valuable source, primarily, because it covers issues that may be wholly relevant to future policies and the individuals who make them. That perspective is quite relevant and inevitably useful to me in further

Explain These Terms Essay Example for Free

Explain These Terms Essay †¢ Speech – A method of verbally communicating to explain needs, wants, emotions in an articulated manner †¢ Language – A method of communicating either in a verbal or written manner structured in an understandable manner to express the persons point †¢ Communication – A method of expressing feelings, opinions, or information using either verbal or non verbal structures e.g. body language or facial expressions †¢ Speech, language, and communication needs – Shows ways in which an individual may need help to communicate by either formulating sentences or using sounds to create words in order to get there feelings or opinions across. This will show which areas they require help in order to have a full method of communicating. 1. Explain how speech, language and communication skills support each of the following areas in children’s development †¢ Learning – Speech, language and communication enables a child to develop a understanding of the world by being able to ask questions to build opinions but also an understanding. It also allows them to build there own relationships and share information. This makes them able to express emotion and develop ideas which allow them to solve problems. †¢ Emotions – Being able to express emotions through speech, language and communications enables a child to build confidence and a self esteem to become who they want to be. By developing their communication it means that the child also understands what are socially acceptable standards and the social norms of how to show the emotions. E.g. it is acceptable for a toddler to throw a temper tantrum in the street due to tiredness but when the individual grows up it is not socially acceptable so this enables them to develop manners of expressing emotions without crying or having a strop. †¢ Behaviour – Children are able to use their speech, language, and communication skills to help them understand right and wrong. By doing this it enables them to understand what they have done wrong and the consequences for their actions. An example of this could be understanding the word no and naughty. †¢ Social – Being able to use speech, language, and communication in a social way will allow them to make friendships. By gaining friendships they will also learn an understanding of how people like to be treated. Using language in a social aspect allows children to learn new things but also allows them to learn off other

Television Programs :: Personal Narrative Media Entertainment Essays

Television Programs Nature. PBS. 2004. Orangutans: Just Hangin’ On. When I was nine years old, my family lived in Ayer, Massachusetts. I was sad to leave my friends in Colorado behind, but luckily lived on a street with a lot of other kids that I became fast friends with. There was a military base located in the town, so it was not unusual for new transplants to come in and out of the school throughout the school year. My teacher was fantastic and helped me catch up when it was clearly evident that this school was way ahead of mine back home. Soon I became one of the top students in my class and had made a best friend in the girl across the street. I began to become accustomed to my quaint small town, with the candy store that still sold nickel candies. There was a bookstore that didn't mind if you read the magazines without paying for them, just as long as your fingers were not sticky from your nickel candy. It was one of those wonderful carefree days as a kid that my whole world changed. I had received a scooter for my birthday and rode up and down the streets with my friends on their bikes after school. The next street over from mine had a long winding hill that the daredevil bike riders liked to coast down at what seemed at the time to be as fast as a car. After riding around my much more level street, my friends became bored and wanted to test it out. I was not the most balanced of creatures on my scooter, and I wimped out. We decided that they would go down the hill and then meet me back at the old school that was next to a large field across the street from my house. The school was from the nineteenth century. There had been a fire there that shut the school down, but amazingly had not caused any structural damage to the outside. It was deemed an historic building so it remained preserved. It was kind of creepy to look in to its abandoned insides, but there was a large asphalt lot behind it and the field next to it, so the former playgrounds received a lot of attention from the kids in the neighborhood. I rode my scooter down towards the back of the school to where a basketball hoop stood and leaned my scooter against the chain link fence.

Group Project Essay

Introduction This assignment will allow for the practical application of concepts, language and terminology covered in Modules 1-4. Students will work together to evaluate and analyze the compositional elements of a work of art that they are not familiar with. The class will be divided into teams consisting of 4-5 members. You have been automatically assigned to a group (A, B C or D). Please email the instructor if you have questions. Teams are assigned an artwork to evaluate and analyze according to the following: (1) visual literacy, (2) structural components, and (3) psychological qualities that have been covered in the modules so far. Members of the group are responsible for applying as many of the terms as possible while analyzing and evaluating their work of art. Each group will base its study on one of the following works of art: †¢Group A (Carla, Ana, Katlyn, Maribel): Francisco Goya, Third of May, 1808 †¢Group B (Brenda, Cynthia, Della, Guiliana): Georges Seurat, Sunday Afternoon on the Island of La Grande Jatte †¢Group C (Kelsey, Iva, Courtney, Triana): Jacques Louis David, The Oath of the Horatii †¢Group D (Jonathan, Kisherra, Rosalinda, Gabrielle) : Edgar Degas, The Dance Class Note: All the above works can be viewed at Mark Harden’s Artchive. The Assignment Use the following three series of questions to guide your analysis: Identify the following qualities that apply to the artwork: †¢The art is 2-D (flat or two dimensional). †¢The art is 3-D (has mass and occupies space). †¢The art is naturalistic (has recognizable objects that imitate nature and 3-D space). †¢The art is narrative (illustrates a story such as history, mythology, religion) or it features animals, people, or landscape elements about which one can invent a story. †¢The art has social or political content, such as protest art or propaganda. †¢If the art is narrative or political, describe it as briefly as possible. †¢The art is ritualistic or shamanistic. It seems to have a magic or spirit function. †¢The art is abstract (seems to have some human, animal, or landscape elements). †¢The art is non-objective (uses shapes and colors that do not seem to come from any recognizable source, such as circles, squares and squiggles). †¢If the art is abstract or non-objective, what feelings do you get from the piece? (ex. energy, motion, calm, agitation, warmth, etc.). Most art design or composition relies upon repeating elements such as lines, shapes, or colors to tie the composition together, to make it coherent or give it unity. You can think of this as establishing a visual theme. Repetition is the strategy. †¢Lines – Are there straight or curving line segments that are echoed throughout the composition? Remember to look at implied or suggested lines formed by the edges of objects such as people. Do groups of people, animals and trees clump together to suggest direction or linear elements? What is the dominant line theme? Is there a minor or contrasting line theme? †¢Shapes – Shapes are closely related to lines. The edges of shapes suggest line elements (the sides of a rectangle also provide vertical line segments). Shadows or sky may form important shapes in landscapes; or a tree’s boughs may form a circle. Look at the negative space (background) as well as the positive objects. Are there any hidden or implied shapes? Do any repeat themselves? What is the dominant shape theme? Is there a subordinate or contrasting shape theme? †¢Color – What is the most important family of colors, colors that are dominant throughout the entire composition instead of isolated? Some colors work well together (red, orange, yellow) and establish a theme of warm or cool dominance. What is the dominant color theme? What is the accent range? †¢Emphasis – Where do your eyes tend to go? What object seems to be most important to your eyes? This is the point of emphasis. The artist may have organized the shapes, lines, and colors to lead you to a point of emphasis. Is there a point of emphasis? How does the art make you feel? The following characteristics can be grouped together: †¢Active, energetic, moving, angry, aggressive, dynamic, hot, advancing, static †¢Calm, flowing, restful, inviting, cool, receding †¢Curved lines, round shapes, nesting shapes †¢Analogous, related, blue, violet, aqua, deep green †¢Orange, yellow, pink and red †¢Contrast, angular shapes, colliding opposites, contrast 1.Visual Literacy. 2.Structural Components. Discuss the use of lines, shapes, color, and emphasis in the work of art you have been assigned. 3.Psychological Qualities. Describe your emotional response to the work of art: Group Work Specifications Groups are set up according to the artwork being evaluated. To participate in your group’s discussion forum and share information use the discussion forum assigned to your group. Product Specifications As a group, please write and turn in your 2-3 page essay single spaced 12pt Times or Times New Roman font. Please upload this to the Dropbox. Grading Specifications You will be graded as a group for this assignment.