Narrative Essay on the Life of Frederick Douglass Essay

In the Narrative of the Life of Frederick Douglass, an American Slave Frederick Douglass describes his life of servitude and his inevitable trip to opportunity. At the point when he was a youth he was put in a family unit in which the innocent special lady began to instruct him to peruse. Her endeavors were ended by her better half and youthful Douglass reviewed his talk on the reasons slaves ought not be taught. Anyway the concise exercises put inside Douglass the craving to keep on learning, by whatever implies conceivable, to peruse and to compose. He had found that training and proficiency was to be his â€Å"pathway from subjugation to opportunity. † Douglass outlines that proficiency is the most significant resource a man can air conditioning quire in the event that he is to accomplish extraordinary objectives. Douglass’ new aspiration to get proficient had both positive and negative impacts. His new want filled him â€Å"high trust and a fixed purpose† and his life was on a very basic level transformed from that early time throughout everyday life. His journey for proficiency was filled with certainty that his future life would be drastically unique and better once he had aced perusing and composing. Anyway it was not without negative impacts too. The more he learned of bondage the more he loathed his own condition and the slave-proprietors that made it. As his lords got mindful of his capacity he was continually looked as they attempted to keep him from arriving at his objective. For a slave the way to proficiency was troublesome. Anyway the way to proficiency drove Douglass to outcomes he was unable to have im-agined. A completely new world was opened for him, and with education came information on an actual existence that slaves had been denied. With education in the long run came information on religion and the incomparable Abolition development. The best result of education was opportunity of the psyche and opportunity of thought, and proficiency became for Douglass the device with which he would turn into his own â€Å"master†. Proficiency was for Douglass and different slaves a force which they had been denied. Obliviousness and lack of education were devices more remarkable than the whip and chains, and were utilized adequately by the slave-proprietors to keep slaves in accommodation. The slave proprietors un-derstood this and dreaded proficient and taught slaves who might now know there is no reality in the slave-owner’s conviction that they â€Å"should realize only to comply with his lord. † Slave proprietors knew the craving for education would spread among the slaves and would be the fundamental strategy for their inevitable opportunity. It was a force the slave proprietors were not ready to provide for their slaves. Douglass characterizes proficiency not just by portraying the conspicuous capacity to peruse and compose, however shows genuine education as the capacity to comprehend and impart contemplations, de-sires, and feelings. Douglass shows proficiency just like the genuine bond between free men and the technique to join against subjection and abuse. Education joins man while numbness and absence of education keeps man detached from the remainder of the world. Albeit Narrative was composed more than one hundred and sixty years back it despite everything fills in as a substantial token of the intensity of education, which remains the most significant as-set a man can gain. With proficiency everything are conceivable, and without it the uneducated become captives to obliviousness.

Sample of Persuasive Speech

Sample of Persuasive Speech Shipping Companies may be Dangerous Today I would like to tell you about the meaning of the environmental awareness in international ship-owning companies and their social responsibility to protect from and acknowledge the damage that their production activities cause or can potentially bring to the nature. Every day we hear shipping companies talking about â€Å"Think Green†. But what does â€Å"Think Green† mean in terms of actions and how does it protect our environment? As frustrating as it can be there is no single explanation or definition of this notion and all the companies explain it in their own way. I would like to ask you: â€Å"What do the shipping companies in â€Å"Think Green† need to minimize water pollution?† â€Å"How do bunker and ship paint influence our marine recourses?† Every day more than fifty thousand tones of marine diesel and heavy fuel is extracted to the sea by container ships and even with the strongest protection systems it is impossible to avoid the pollution of water with marine fuel. Every day more than five thousand ships cross Panama channel and the damage that is caused by the ship paint is unavoidable. A lot of companies started to develop special environmentally friendly paint that helps to minimize water pollution. But how many companies are going to do so? And how many companies that are hiding from their social and environmental responsibilities? Taking all these facts into account I am convinced that should bring strict regulations and give a unified definition to the notion â€Å"Think Green† that must be adopted by all the shipping companies irrespectively of their size and scale of operations. This is a sample essay. If you want to have your own non-plagiarized work of the kind, order now at WriteMyPapers.org! What Do We Rely Upon While Completing Your Essay? When you are ready to purchase your essay with our service, you can easily place your order on the site. This is the easiest way to let us know everything about your essay, including the deadline, academic level, format, instructions to follow. Also, you can choose the writer with a higher level of experience right in the order form, or select the best possible service to be provided for you due to our VIP service. Getting to an end of the order form you can proceed to secure payment. Our services are paid for in advance, so that we can be sure that the writer will be compensated for the work done. Essay writing process is safe with us. We stick to the rules of confidentiality and no one will ever learn about our cooperation. Any personal information you enter in the order or registration form is always shared privately, so theres not need to worry. We have predicted that you may want to make some changes in the text. Its so rare practice at our service as all our writers are competent in what they are doing. It means that any type of work is based on the unique instructions you upload for your order. The writer strictly follows all of them, which guarantees the result that is expected by the professor, tutor, or any other person who assigns the task to you. However, if it happens that you wish to change anything, you can write us about it and set a new deadline, this way the writer will have time to do what you are asking for. The only important thing here is that you, unfortunately, cannot ask for the changes that are opposite to your initial requirements. Otherwise, you have three revisions of the text for free. We know how much you take care of the language, so do we. We have native speakers only, who passed special challenging English tests to prove they are worthwhile writing the texts for you. We repeat it from time to time, and while reading the works of our writers we see that they are growing every single year and improving their skills. Another crucial thing we feel serious about is deadline. It is important for us to know that the writer finishes your work by the due date. Besides, as for the deadline you can have your one page order done even in three hours if you are in a hurry. Finally, we do our best to dispatch a high quality paper written without any possible error made. This is why we have an editor to proofread an essay and make sure it is written perfectly and all the sentences do have sense.

Virginia Hall Biography

Virginia Hall Goillot (born Virginia Hall, April 6, 1906 – July 8, 1982) was an American spy who worked with the British Special Operations Executive during World War II. Her effectiveness as a spy earned her the â€Å"honor† of being considered the most dangerous Allied spy by the Nazi German regime. Fast Facts: Virginia Hall Known For: Renowned spy who assisted the French Resistance during World War II, working for both British and American intelligence and becoming one of the Nazis most-wanted enemies.Born: April 6, 1906 in Baltimore, MarylandDied: July 8, 1982 in Rockville, MarylandSpouse: Paul Gaston Goillot (m. 1950)Honors: Member of the Order of the British Empire (1943), Distinguished Service Cross (1945), Croix de Guerre avec Palme Early Life and Education Virginia Hall was born in Baltimore, Maryland, to Barbara and Edwin Hall. Her name, Virginia, was her mother’s middle name. As a young girl, she attended the all-girls preparatory school Roland Park Country School. She eventually attended Radcliffe College and then Barnard, the prestigious women’s college, studying foreign language including French, German, and Italian. With her parents’ support, Hall went to Europe to finish off her studies. She traveled extensively on the Continent, studying in Austria, France, and Germany in the late 1920s, with the goal of working in the diplomatic corps. In 1931, she began working at the American embassy in Warsaw, Poland, as a clerk for the Consular Service; this was intended to be a stepping stone for a full-fledged career in the Foreign Service. However, in 1932, Hall had a hunting accident that resulted in the partial amputation of her leg. Forced to adapt to life with a wooden leg she nicknamed â€Å"Cuthbert,† her traditional diplomatic career was over before it began. Hall resigned from the Department of State in 1939 and returned to Washington, D.C., where she attended graduate school at American University. Special Operations Executive In 1940, as World War II spread across Europe, Hall was in Paris. She had joined the Ambulance Service to help in the war effort in France, but she wound up in Vichy territory when France fell to the invading Nazis. Hall was able to leave France and get to London, where she volunteered for the Special Operations Executive, the British espionage organization. Using the cover of a reporter for the New York Post, Hall spent over a year in Vichy France, working to coordinate the activities of the French Resistance. In 1942, she worked alongside noted SOE operative Peter Churchill on a couple of missions, involving the delivery of money and agents to the French spy networks. Hall worked primarily in and around Toulouse and Lyon. Hall’s work was discreet, but she quickly got on the radar of the occupying Germans. Nicknamed â€Å"the limping lady,† she was deemed one of the regime’s most wanted. In 1942, Germany seized all of France, and Hall needed to escape quickly. She narrowly escaped Lyon by train, then hiked through the Pyrenees to make it to Spain. Throughout the ordeal, her sense of humor remained intact—she transmitted to her SOE handlers that she hoped â€Å"Cuthbert† wouldn’t give her trouble during her escape. She was briefly arrested for crossing into Spain illegally, but was released with the help of the American embassy. For about a year, she worked with the SOE based out of Madrid, then returned to London, where she was recognized with an honorary Member of the Order of the British Empire. Continuing Intelligence Career After completing her work with the SOE, Hall’s spy career wasn’t over. She joined the equivalent American organization, the Office of Strategic Services, Special Operations Branch, and requested a chance to return to France, still under Nazi occupation. Granting her request, the OSS sent her to Brittany, France, with a false identity and a code name. Over the course of the next year, Hall mapped out safe zones for supply drops and safe houses, worked with the major Operation Jedburgh, personally helped train Resistance fighters in guerilla warfare, and sent a constant stream of reporting back to Allied intelligence. Her work continued up until the very end of the war; Hall only ceased reporting once Allied forces caught up to her and her team in September 1945. Upon returning to the United State, Hall married Paul Goillot, a former OSS operative himself. The pair both transitioned into work at the Central Intelligence Agency, where Hall became an intelligence analyst, specializing in French parliamentary affairs. Both Hall and Goillot were assigned to the Special Activities Divison: the CIA division focused on covert operations. Retirement, Death, and Recognition After fifteen years at the CIA, Hall retired in 1966, moving with her husband to a Barnesville, Maryland, farm. She died sixteen years later at the age of 76 in Rockville, Maryland, and is buried nearby. During her life, Hall was awarded some of the most prestigious honors in the world. Not only was she made an honorary MBE, but she also received a Distinguished Service Cross, the only such award given to a woman in World War II, from the American government. The French, meanwhile, awarded her a Croix de Guerre to honor her work in occupied France. After her death, the honors continued: she was commemorated in 2006, on what would have been her 100th birthday, by the French and British ambassadors to the United States, and she was inducted into the Maryland Women’s Hall of Fame in 2019. She remains one of the most effective and honored spies in American history. Sources Pearson, Judith L. The Wolves at the Door: The True Story of Americas Greatest Female Spy. Guilford, CT: The Lyons Press, 2005.Purnell, Sonia. A Woman of No Importance: The Untold Story of WWII’s Most Dangerous Spy, Virginia Hall. Hachette UK, 2019.â€Å"Virginia Hall: The Courage and Daring of ‘The Limping Lady’.† Central Intelligence Agency, 8 October 2015, https://www.cia.gov/news-information/featured-story-archive/2015-featured-story-archive/virginia-hall-the-courage-and-daring-of-the-limping-lady.html.

Jane Austen s Pride And Prejudice - 2143 Words

Jane Austen is an expert at juxtaposing romance and wit. Her novels are highly prized not only for their irony, humor, and depiction of English country life, but also for their underlying serious qualities. Austen’s plots highlight the dependence of women on marriage to secure social standing and economic security. With each page, Austen is able to illustrate the absurdity of society in 19th century England through the entertaining individuals that she creates. It is easy to read a Jane Austen novel and label her characters as shallow and conceited, or shy and tenderhearted. But it is more complex than that. What really differentiates a heroine from a villainess? In many of Jane Austen’s stories, characters from different books share similar traits. However, in Mansfield Park and Pride and Prejudice, it is not the heroines that share comparable qualities. Instead, there are striking similarities between Elizabeth Bennett, the protagonist in Pride and Prejudice, and Mary Crawford, the antagonist in Mansfield Park. Mary Crawford and Elizabeth Bennett are similar in their liveliness, their wit, and their playfulness — all in contrast to the heroine of Mansfield Park, Fanny Price, who is quiet, reserved, and solemn. So what makes us see Mary as villain and Elizabeth as a heroine? The answer is very simple: their moral compasses. Mary isn’t judged for her vivacious, strong-headed personality — she is judged for her moral failings, for her â€Å"faults of principle†, her â€Å"bluntedShow MoreRelatedJane Austen s Pride And Prejudice1294 Words   |  6 PagesJane Austen s exceptional novel Pride and Prejudice has been depicted as a classic that is as much a social study on class, marriage and gender as it is a romantic tale. It is an amusing representation of the social atmosphere of the late eighteenth and mid nineteenth century England, and it is primarily required with courtship rituals of the English high class. The novel is more than a romantic tale, however throug h Austen s subtle, and ironic style, it addresses gender, class, and marriageRead MoreJane Austen s Pride And Prejudice1231 Words   |  5 Pagesfinancial stability. In the novel Pride and Prejudice, Jane Austen states that the desire for better social connections interferes with the workings of love through the relationship between Darcy and Elizabeth to criticize the social class structure of the 19th century. Anxieties about social connections or the desire for better social connections, interfere with the workings of love. Darcy and Elizabeth s realization of a mutual and tender love seems to imply that Jane Austen views love as something independentRead MoreJane Austen s Pride And Prejudice992 Words   |  4 Pages It is unfortunate that many people tend to dismiss Jane Austen’s novel, Pride and Prejudice, as simply a romantic love story, even labeling it a â€Å"chick flick.† Upon a shallow reading, it may appear to be such, but a closer look at the novel reveals so much more embedded in the story. In addition to describing the entertaining relationship between Elizabeth and Mr. Darcy, the novel serves to forward Austen s personal values and ideas. Furthermore, there is one issue of her era that she particularlyRead MoreJane Austen s Pride And Prejudice1138 Words   |  5 PagesPride and Prejudice is a novel about the superficiality of marriage during the late 19th and early 20th century, which largely influenced the decisions made by individuals, based on connections and social rankings. The novel takes its characters through various changes influenced by their decision to or rather not to marry certain individuals. It begins not by a man desiring to marry for love, but by a mother who desires nothing more than to marry her daughters well. As the novel develops, Jane AustenRead MoreJane Austen s Pride And Prejudice1211 Words   |  5 PagesJane Austen’s Pride and Prejudice was greatly influenced by the time period in which it was written, This novel follows the story of Elizabeth Bennet and her sisters as they are faced with marriage proposals. The marriage and roles of women in this time period are shown throughout this story. During the time Austen was writing this novel, a woman’s role for her family changed. Daughters started to become a way for their family to achieve more money. Because their family depended on this finan cialRead MoreJane Austen s Pride And Prejudice1678 Words   |  7 PagesAfter reading Jane Austen’s most popular piece of work, the effects of the high societal expectations can be acknowledged through viewing the lives of the Bennet family and friends and noting such effects. Through the examination of the characters in Pride and Prejudice it is easily deciphered between marriages based upon true love and marriage based upon the expectations of society. Society’s main goal for woman in the Victorian era was marriage. As seen many in Pride and Prejudice, marriage wasRead MoreJane Austen s Pride And Prejudice1675 Words   |  7 PagesIn Jane Austen’s Pride and Prejudice, she has specific criteria that her characters follow when choosing their mates. In today’s society, most couples still follow these criteria and more when choosing their ideal mate. What are these important criteria that Austen’s characters consider when choosing a mate? For Austen, the important criteria that she has for choosing a mate are that couples are personally compatible, they are in love with each other, and they must have a good moral character. Read MoreJane Austen s Pride And Prejudice1434 Words   |  6 PagesJane Austen’s Pride and Prejudice was considered a radical novel back in 1813 when she wrote and published the piece. It is a social commentary on the treatment and societal standards of women, as well marriage expectations at the turn of the 19th century. Austen criticizes the patriarchal society, materialism, double standards of men and women by centering the book around Elizabeth Bennett, a young woman of decent means who does not understand the reason for the pressure to find a suitable husbandRead MoreJane Austen s Pride And Prejudice1468 Words   |  6 Pagesestablished over time. In Jane Austen s novel, Pride and Prejudice Elizabeth Bennet is the main character who is a lady in the Regency Era. Elizabeth lives in Longbourn with her parents, Mr and Mrs Bennet and her four sisters. In the beginning of the novel, Elizabeth s prejudice mindset and strong opinion blinds her from realizations happening arou nd her. Soon, Elizabeth s prejudice disappears allowing her to open up and fall in love. Throughout Jane Austen s novel, Pride and Prejudice, Elizabeth growsRead MoreJane Austen s Pride And Prejudice1649 Words   |  7 PagesIn her novel, Pride and Prejudice, Jane Austen is pre-occupied with the theme of marriage. Marriage is a central issue of a woman’s life but it was even more crucial for the women of her society where women were largely dependent on the men in their lives. As a result, women pursued socio-economic stability through marriage. However, it is clear through the novel that Austen did not agree with this part of her society. In Pride and Prejudice, she gives preference to a marriage which is based on love

ADHD Diagnosis Essay Example For Students

ADHD Diagnosis Essay Attention-deficit hyperactivity disorder(ADHD) is much more prevalent in todays societycompared to previous generations. More and more people are being diagnosed at an alarmingrate. To our surprise, I learned this disorder does not only affect children. There are many adultswho suffer from it also. ADHD characteristics are neuro-biologically based, and they oftenchange as the individual gets older. One does not out-grow ADHD even though the behaviors, orsymptoms may not be exhibited in the same manner or with the same intensity. After learningthis fact, I thought it would be very interesting to see how this disorder affects both children andcollege students. Therefore, I choose one journal article which relates ADHD to children, and theother which deals with the effects of ADHD on college students. The first journal article I researched, An Intervention Approach for Children withTeacher and Parent Identified Attentional Difficulties, explained that inattention, impulsivity,distractibility, and restlessness are all signs of a child with an attention-deficit hyperactivitydisorder. There are three subtypes of ADHD which have been defined by the Diagnostic andStatistical Manual of Mental Disorders as: predominantly inattentive, predominately hyperactiveimpulsive, and combined (Semrud-Clekeman, Nielsen, Clinton, Sylvester, Parle, and Connor,1999). Usually children who exhibit these subtypes have difficulty completing assignments,displaying high qualities of work, and maintaining good behaviors. Children with thehyperactivity-impulsivity subtype do not display significant attentional problems, though they areidentified as young as pre-schoolers. However, symptoms of inattention dont typically emergeuntil the later ages, which must be why the predominately inattentive and combined sub types ofADHD have been found in older school-age children. These children who have been identified as having ADHD, show an inability touse effective problem solving over a period of time. When researchers looked at their brainstructures, they found that the frontal-striatal regions are involved with the childs ability toinhibit, focus, and shift attention. Researchers have formed interventions involving the behavioral or cognitivemanagement of children with ADHD. Attention-training strategies, classroom-basedcontingency systems, home-school contingencies, and peer-mediated contingencies are examplesof these interventions. In an effort to measure students with ADHD, in addition to medicationand intervention strategies, researchers conducted two types of tests. The first test, the visual attention task, required the child to scan fourteen rows ofds, each d had one to three marks around it. The child was instructed to select the ds with twomarks around them. The children were also told to move down to the next row every twentyseconds. The score is calculated by subtracting the errors from the total amount correct. It wassuggested that this task assesses the capacity for sustained attention as well as accurate visualscanning and inhibition of rapid responses(Semrud-Clekeman, Nielsen, Clinton, Sylvester,Parle, and Connor, 1999, p. 585). The second test, the auditory attention task, required the child to listen to randomletters and numbers. Afterwards, they were asked to remember how many letters or numbers theyheard. The child must keep in mind the letters and numbers they heard for each stimulus at thesame time. The test starts out with four stimuli and finishes with twelve. This task has beenhypothesized to be a measure of auditory divided attention as well as sustainedattention(Semrud-Clekeman, Nielsen, Clinton, Sylvester, Parle, and Connor, 1999, p. 585). The results of this study confirmed that children with ADHD who had helpthrough the intervention programs showed an increase in their performance on visual andauditory attention tasks, while the other children without the help of intervention programs didnot show any improvement. These children most likely represent a continuum of attention andactivity / impulsivity problems and may describe the population of children with significantattention problems who are infrequently referred for an assessment beyond thepediatrician(Semrud-Clekeman, Nielsen, Clinton, Sylvester, Parle, and Connor, 1999, p. 587). Itseems very probable that children with attention and work completion difficulties withoutsignificant behavioral and learning problems often go unaided in classrooms today. War Simulation Softwar EssayIt seems as if this new test could be a much better way of diagnosing someonewith ADHD compared to the methods used in the two journal articles. I feel the researchpresented in the journal articles does support the report in our popular media article byillustrating that there is continuous research taking place that just seems to be getting better astime goes by. All three articles also helped confirm my awareness of the fact that ADHD ispresently such a widespread problem. The articles also helped me to realize how manyindividuals are misdiagnosed. All types of disorders, from anxiety to manic-depression toconduct disorders, are now mistaken for ADHD, and everyone suffers for that diagnosticsloppiness (Schrof Fischer, 2000). It comes as a relief to know that with modern technology,comes more accurate ways a determining whether an individual is suffering from ADHD. If thisnew test is confirmed to be reliable, it could help correct both the overuse of Rit alin and theundertreatment of kids whose ADHD is missed by the naked eye (Schrof Fischer, 2000). All inall, Ive learned a great deal about attention deficit hyperactivity disorder, and I am glad to now know that there is hope for our future generation to be prepared with more improved methods to accurately diagnose people with ADHD.

The Eyes Have It Essays - Dragon, Wolf Nomads, Demon,

The Eyes Have It The Eyes Have It is a book of adventure. While reading it, I got the sense that before it was written into a book, it was a Role Playing Game, and the Games Master had played the adventure, liked how his players had conducted the adventure, and wrote it into a book. In this way it relates to my topic heavily, as it IS a Role Playing Game. In another way it doesn't relate to RPG's at all because it's a book, and not a game. But it relates to my topic in one pure sense - it's an adventure. All RPG's are adventures. The story begins as one Askar-Ben-Oba, son of the chief of the Wolf Nomads, must travel through a continent to marry his betrothed, one Maria Griswalda. Askar does not want to marry Maria, but he must. His tribe, the Wolf Nomads, was once a proud and happy race. They fought numerous battles and won the battles and also the fear and respect of their allies. But over time, they had softened. The Spider Queen, an undead creature, had the plan to take over all of the Yeomanry. The Yeomanry is where the story takes place, and is a huge continent where many different races and cultures live (like Asia and Africa put together with some aliens and snow thrown in.) the Spider Queen had the notion of destroying all this good for her own, and turning it into her black domain. She did. She casted a spell which made a huge black bubble. It spread like a plague and grew for leagues in every direction. Anything that entered this bubble never came out. The Spider Queen threw her min orcs, demons, kobolds, etc. into this bubble to plunder and destroy. This she did successfully. But one person would not take this sitting down. While the Wold Nomads, who were far away and too far to really receive the effects of this bubble, rested their haunches and became couch potatoes, one Kathryn Fern-Cliffe, daughter of King Buncombe the Green. Kathryn had the will and the need to destroy the Spider Queen. This she did, with the help of a magical gem, the Eye of Tiros. Kathryn used the magic power within the eye to destroy the Spider Queen. Once she was destroyed, life became normal in the Yeomanry. Kathryn also had the job of rebuilding the destruction of the Spider Queen. But while the Wolf Nomads were deteriorating, and Kathryn rebuilding, Kranoch, a king of a region in the Yeomanry, was plotting revenge on Kathryn. Her father had blinded Kranoch by an arrow while on an assault raid, and Kranoch wanted revenge. Kranoch gathered his armies and the left over minions of the Spider Queen, and made an army powerful enough to destroy Kathryn and her region of Sterich. Kranoch also wanted the Eye of Tiros, the magical gem, which he thought would cure his blindness. With this as his main driving force, he went on a rampage. Back to the Wolf Nomads for a moment. The Wolf Nomads were quickly deteriorating. Askar-Ben-Oba, the son of the chief, was to marry Maria Griswalda, the daughter of a wealthy Nomad who had gone to Sterich and made a fortune. Maria's sizeable dowry was badly needed to fund the Wolf Nomads in their daily lives and to rebuild themselves into the powerful tribe they once were. The story all comes together as Askar sets out on his journey to Sterich to marry Maria. On his journey, the Eye of Tiros is stolen, and he is framed as the thief when he sits in a seedy bar. The bar "patrons" found Askar as the dupe and framed him with the crime. Askar is punished, searched, and found innocent. But he does not get away with the theft cleanly, as he is still the prime suspect. Askar gets an iron collar fit around his neck, with a magic spell on it. The spell makes the collar around his neck shrink a little every day, so eventually it will strangle him. His only escape is to find the Eye of Tiros so the collar can be removed. Askar knows his only way to survive is by finding the Eye. This he sets out to do. But during his quest, he gets captured by Sea Pirates, meets up with a dwarf with a flying ship, and eventually reaches Kathryn in her quest to find the Eye of Tiros. The Eye is wanted not

How To Measure Mass Using a Balance

How To Measure Mass Using a Balance Mass measurements in chemistry and other sciences are performed using a balance. There are different types of scales and balances, but two methods can be used on most instruments to measure mass: subtraction and taring. Key Takeaways: Measure Mass Using a Balance A balance or scale is an instrument used to measure mass in the science laboratory.One common method of measuring mass is to tare the scale and measure the mass directly. For example, this is how people weigh themselves.The other common method is to place a sample into a container and measure the mass of the container plus sample. The mass of the sample is obtained by subtracting the mass of the container. Proper Use of a Balance Before using a balance, its important to take some preliminary steps. This will help ensure you get the most accurate and precise measurement. Be sure you understand how to use a balance before taking mass measurements.The balance should be clean and free of debris.The balance should be on a level surface.Never place a sample directly on the balance. You should use a weighted boat, weighing sheet, or another container to hold the sample. Some chemicals you may use in a lab could corrode or otherwise damage the surface of the weighing pan. Also, make certain your container will not chemically react with your sample.If the balance has doors, be certain to close them before taking a measurement. Air movement impacts the accuracy of mass measurements. If the balance does not have doors, make certain the area if free of drafts and vibrations before measuring mass. Mass by Difference or Subtraction If you place a container full of sample and weigh it, youre getting the mass of both the sample and the container, not just the sample. To find the mass: mass of sample mass of sample/container - mass of container Zero the scale or press the tare button. The balance should read 0.Measure the mass of the sample and container.Dispense the sample into your solution.Measure the mass of the container. Record the measurement using the correct number of significant figures. How many this is will depend on the particular instrument.If you repeat the process and use the same container, do not assume its mass is the same! This is particularly important when you are measuring small masses or are working in a humid environment or with a hygroscopic sample. Mass by Taring When you use the tare function on a scale, you are making certain the reading starts from zero. Usually, there is a labeled button or knob to tare the balance. With some instruments, you need to manually adjust the reading to zero. Electronic devices do this automatically, but require periodic calibration. Zero the scale or press the tare button. The scale reading should be 0.Place the weighing boat or dish on the scale. There is no need to record this value.Press the tare button on the scale. The balance reading should be 0.Add the sample to the container. The value given is the mass of your sample. Record it using the proper number of significant figures. Sources of Error Whenever you take a mass measurement, there are several potential sources of error: Air gusts may push the mass up or down.Buoyancy can affect measurements. Buoyancy is directly proportional to the air volume that is displaced and is affected by air density changes due to temperature and pressure fluctuations.Condensation of water on cold items may increase apparent mass.Dust accumulation can add to mass.Evaporation of water from damp items may change mass measurements over time.Magnetic fields may affect components of the scale.Temperature changes can cause components of the balance to expand or contract, so a measurement taken on a hot day may differ from one taken on a cold day.Vibration may make it difficult to obtain a value, as it will fluctuate. Is It Mass or Weight? Remember, a balance gives you a mass value. The mass would be the same whether you measured it on the Earth or on the Moon. On the other hand, the weight would be different on the Moon. While its common to use the terms mass and weight interchangeably, they are only the same values on Earth! Sources Hodgeman, Charles, Ed. (1961).  Handbook of Chemistry and Physics, 44th Ed. Cleveland, USA: Chemical Rubber Publishing Co.  pp.  3480–3485.Rossi, Cesare; Russo, Flavio; Russo, Ferruccio (2009). Ancient Engineers Inventions: Precursors of the Present. History of Mechanism and Machine Science. ISBN 978-9048122523.