To find out from a range Essay Example for Free

To find out from a range Essay To find out from a range of tablets which tablet is the best one to neutralise hydrochloric acid. Aim My aim is to determine which tablet is the best for stomach acid (neutralises the most hydrochloric acid). Scientific Background Acids and Alkalis Many of the substances that we use today are made up of either acids or alkalis. These are two chemical opposites. Most acids are liquids. They are very corrosive and can kill or burn skin cells, bacteria etc. Acids taste sharp and sour. Strong acids such as hydrochloric acid, sulphuric acid etc release hydrogen quickly whilst weaker acids such as citric acid and carbonic acid release hydrogen slowly. Strong acids measure at 1 or 2 on the pH scale and weak acids measure at 5 or 6 (The pH is a number on a scale which shows how acidic or alkaline a substance is). Most pure alkalis are solid. Like acids they are also very corrosive. Most feel soapy but some can burn flesh. Strong acids measure 13 or 14 on the pH scale and weak acids measure 8 or 9. Alkalis neutralise acids. At this point their pH level becomes 7 and they are known as neutral.(acid + alkali ? neutral solution) (pH Scale) Hydrochloric acid/stomach acid When your stomach wall makes too much hydrochloric acid you end up with a stomach-ache. Normally you are given an alkaline tablet to neutralise the acid. Universal Indicator Universal indicator can be in the form of paper or liquid. It is used to show whether something is neutralised or whether it is an acid or alkali. E. g. if the indicator goes red it is acidic. Variables Independent variables are the ones that I cannot keep at a certain amount e. g. Hydrochloric acid. Dependent variables are the ones which I have to keep at a certain amount e. g. water. Prediction My prediction is that whichever tablet neutralises the most hydrochloric acid is the best. Method Firstly I will measure 30 ml of water in a measuring cylinder. Secondly I will put this water into a plastic beaker and dissolve a tablet into it. I will stir it with a stirring rod. After this I will add 7 drops of Universal indicator to the solution and stir it. I will put some Hydrochloric acid into a pipette and add it to the solution until it is neutral counting how many drops I add. Finally I will do this experiment twice for each tablet. Fair Test To make this test fair firstly I will make sure that I use the same amount of water and universal indicator. I will also dissolve the same amount of tablet each time. I will make sure that all the water used is all at the same temperature. Finally I shall do each experiment twice to ensure that I obtain accurate results. Equipment Measuring Cylinder, Water, Thermometer, Plastic Beaker, Stirring Rod, Pipette, Hydrochloric acid, Universal Indicator-Phenophatlein, Tablets Gaviscon, Settlers, Tums, Calcium Carbonate Apparatus Safety To make this experiment safe we should make sure we hold all chemicals and equipment with care as acids and alkalis, which are going to be used in this experiment, are corrosive. We should make sure all hair and scarves are tied properly so they do not get in the way. We should also wear goggles to protect our eyes. Preliminary Work First I measured and poured 25ml of sodium oxide into a plastic beaker. Then I added 7 drops of indicator until the solution turned pink. Then I measured 25ml of Hydrochloric acid and started adding this to the solution until it turned clear. This showed that the solution is neutral. Obtaining Results. Table of Results   Coloured / Flavoured Tablet C. O. S. = Colour of Solution Analysis Graph of Results The above graph shows the average amount of drops of Hydrochloric acid added to neutralise a tablet. Conclusions After having analysed my results I have come to realise that Gaviscon is the best tablet to neutralise Hydrochloric acid. (? Gaviscon + acid ? neutral) I had predicted that whichever tablet neutralises the most hydrochloric acid is the best. I did not specify a certain tablet. This ties in with my prediction as it does neutralise the most. Tums was the next best then Settlers and finally Calcium Carbonate. There are no anomalies in my work. Evaluation Accuracy and Reliability I feel that I could have made my results more accurate by doing the experiment another time as I could have miscounted the drops. I think the reliability of my results is fair but improvements could have been made to make it a 100 per cent accurate. Improvements Paying more attention to the different colours on the pH scale so that the overall pH number written could have been more accurate would have made improvements to the investigation. Extending the Investigation I could extend the investigation by using different types of water e. g. hot and cold. I could also hav.

Techniques Used in Print Advertising Essay -- Literary Analysis

There are a plethora of features and techniques used in print advertising which are often invisible to the naked eye, and primed at targeting the audience’s subconscious mind. Audiences consume advertising wherever they look or go, whether it be on a train, reading a newspaper, or even using the public bathrooms. Conventions are constructed, and past knowledge is exploited, by what can be acknowledged as a ‘language of advertising’. Print-based advertising is a genre that has been around for a significant amount of time now, and a form that continues to flourish and adapt itself despite the prominence of more contemporary methods, such as the internet, and more recently, the growth of tablet computing. The following investigation will focus on two different newspaper advertisements for energy suppliers – one from British Gas, and the other from SSE. A consideration of audience will be undertaken, before analysing the use of language, structure, images and t ypography in each. Then, following this detailed analysis, a commentary on the persuasiveness of each advert will make for a fitting and necessary conclusion. Firstly, as suggested, it is important to consider the audience and context of the two focus advertisements before beginning an analysis of the primary features. This will provide a solid contextual framework, and make a link between audience, context, and features possible later in the investigation. Both advertisements were featured in a copy of The Guardian, a British national daily newspaper with a respectable circulation. The Guardian is centre-left in its political stance, thus inevitably attracting a readership with shared values. In addition, the newspaper is particularly popular in the 18-54 age demographic. (De... ...rticularly attempt to tie in with the content of the advert in a way that is witty, unlike the SSE advert. However, the declaratives in the main body of text, such as ‘We’ve introduced lots of things to help’, could persuade readers to read on to discover exactly what they’ve introduced to help. Such a question /answer approach is utilised throughout the advert. Works Cited - Advertising ‘Demographic profile of Guardian readers’ (2010) http://www.guardian.co.uk/advertising/demographic-profile-of-guardian-readers [Accessed 04 December 2011]. - Vestergaard, T; Schroeder, K (1985), The Language of Advertising, Wiley-Blackwell - Goddard, A (1998), The Language of Advertising: Written Texts, London: Routledge - Delin, J (2000), The Language of Everyday Life, London: Sage - Cook, G (1992), The Discourse of Advertising, 1st edn. London: Routledge

No Zero Policy Essay

In most schools in many states, teachers and parents consider a grade of zero acceptable for incomplete homework. It is common for teachers to give zeros for late or slacked off assignments. Unfortunately, few teachers or parents question the usefulness of the consequence, and students continue to reap the consequences without benefit. Giving zeros as an punished measurement produces failure rather than performance. Administrators conjure up the fact that raising questions about grading procedures could induce powerful emotional responses from all the teachers. Even when school policies exist, teachers often deviate from the prescribed standard to reflect the teacher’s personal preferences for evaluating students. Grading policies usually develop from teachers’ personal school experiences without questioning or considering the validity of the process. Most teachers agree that grades are a measurement of learning and should reflect the effort of the student rather than the knowledge. However, many grading policies promise zeros for things like not doing homework, having incomplete or late assignments, being tardy, coming to class without books, chewing gum, or failing to follow through with any other required classroom rules. Unfortunately, many teachers combine behavior issues with a students’ academic measurement. Giving zeros for behavior issues is an inaccurate reflection of the student’s academic performance. Academic measurement should only measure learning. A zero is a mathematically imbalanced measurement as the normal grading scale for most school. Conant using the unbalanced tipped scale for certain performance classes. Letter grades usually have a ten point range or less. For instance, A would be 90-100, B is 80-89, C is 70-79, D is 60-69. Using this method, an evaluation for an â€Å"F† should be F as 50-59. It is not required for the â€Å"F† to carry 59 points (0-59) while all other grades carry 10 points. An â€Å"A† averaged with an â€Å"F† should make a â€Å"C.† However, if the â€Å"A† is 100 and the â€Å"F† is 0, averaged they equal a 50 which is still an â€Å"F†. Teachers usually use zeros to motivate students to do better. However, zeros kill motivation. Two zeros, whether just or unjust, can destroy a good average. Zeros produce a sense of hopelessness and certain failure. Many students fail courses due to a lack of organizational abilities rather than defiance. When teachers give zeros for homework assigned for extra credit rather than for the actual learning process, they are using grades as a behavior punishment. Recording a failing grade for assignments not intended for the means of simple knowledge is not reasonable. Assigning zeros for homework issues is especially common for students with organizational issues and dysfunctional homes that lack parental support. The grade of a zero does not benefit the motivation of a child’s education. Students through laziness take zeros as an easy way out of doing the assignment. Students often avoid assignments like research papers, essays, and reports by taking a zero instead of doing the work. The student barely passes to the next grade without having gained these vital learning experiences. Students with organizational problems do not increase performance skills through the automatic zero. Neither does the automatic zero help students who do not understand the assignment gain the knowledge intended. In fact, the automatic zero threatens failure. Teachers need to use logical consequences rather than a full blown zero when work is not completed. There are several possible alternatives to giving a zero. The school can include tardiness and other behavior issues in its own discipline policy rather than in the grading system. If the teacher must give a failing grade, give a grade no more than ten points lower than the last passing grade to make the measurement equitable. The teacher can have a homework detention hall after school to help those who struggle with completing assignments. The student receives a grade of incomplete until the student completes major assignments such as research papers, essays, and reports. The final average for the term is recorded only when the assignments are all received and graded. The student cannot earn credit for the course until these valuable assignments are completed and turned in. A minimal passing grade would be appropriate for extremely late assignments. For many years teachers have followed grading procedures learned from their teachers without evaluating their effectiveness or appropriateness. Grades should measure academic learning not the slacking effort of the student, for they may have their reasons. Receiving a zero for not putting your name on a paper or failing to do homework does not reflect a student’s lack of knowledge. Zeros promote failure rather than the student gaining more knowledge. Three 100’s averaged with one zero gives a score of 75. The zero forces failure and is not an evenhanded measurement of learning. Anything that is inequitable is unjust. If it is unjust, it is unethical. Therefore, giving zeros as an academic measurement is not proper to the safe learning environment of High Schools.

The World Of The Holocaust - 910 Words

What is genocide? Where did it come from? Most people living in the U.S. have little to know clue what genocide’s definition is. Some Americans miss use the word throwing it around lightly not knowing it origin. Genocide is a word that was created after the Holocaust by the United Nations. The creation of this word was intended to define the act of extermination of a country, ethnic, or religious group. It is a shame the creation of this word had to come into the world. In this paper I will address the many different for that genocide takes in today society. To begin with, I would like to talk a about the holocaust. The holocaust was a planned extermination of Jewish people in Germany. This was because of Adolf Hitler a German national that used the Jewish as a scapegoat for Germany misfortune’s. Hitler rose to power through fear that already existed in the German people. This indeed is a scary situation for many countries because of the fact of people being manipulated so easily. In today’s politics we have presidential candidates that share similar views as Hitler’s views; For example, Donald trump stated that some Americas greatest problem were immigrants, but in particular Mexican immigrants. Trump went on to state that Mexico was sending criminals rapist and drug dealers. He has proposed ways to get â€Å"rid† of them when he gets into office people are afraid of this man going into power because of hatred and violence his supporters crate. Furthermore, the most famousShow MoreRelatedThe World Of The Holocaust1457 Words   |  6 Pagesway. They show what you’ve been through and how strong you are for coming out of it†-Demi Lovato. On September 1st, 1939, Hitler invaded Poland which caused the start of World War II, and the official establishment of the Third Reich. The Third Reich was the Nazi German Empire that had hoped to achieve a total Aryan race and world domination. Many ethnic groups fell short to Nazi beliefs and were oppressed and destroyed. In order to establish ultimate Aryan perfection, Hitler needed to get rid ofRead MoreThe World Of The Holocaust1151 Words   |  5 Pagesexamples of this is the genocide know as the Holocaust. All over the world religions usually teach that all of civilization is equal and that we should all be cordial with each other, but monstrosities like Adolf Hitler broke those sacred laws. The Holocaust was a time period where a set of people were persecuted. While the y were being persecuted World War Two was used as a smokescreen to conceal the horrors of the Holocaust. What lead to the Holocaust was Nazi ideology. Nazi ideology lead to theRead MoreThe World Of The Holocaust934 Words   |  4 PagesThe Holocaust was the systematic, organized, frighten, vicious event that sponsored by Nazi Party throughout the Europe continent that approximately took away six million Jews’ life with assisted from Nazi Germany and its collaborators, the event also caused different extent of casualties to contemporary third party countries in the Europe simultaneously. The official beginning date of event started from January 1933 when Adolf Hitler first came to power in Germany with Nazi as his backup to openlyRead MoreThe World Of The Holocaust1151 Words   |  5 Pagesexamples of this is the genocide know as the Holocaust. All over the world religions usually teach that all of civilization is equal and that we should all be cordial with each other, but monstrosities like Adolf Hitler broke those sacred laws. The Holocaust was a time period where a set of people were persecuted. While they were being persecuted World War Two was used as a smokescreen to conceal the horrors of the Holocaust. What lead to the Holocaust was Nazi ideology. Nazi ideology lead to theRead MoreThe World Of The Holocaust885 Words   |  4 Pagestraumatic period, Holocaust-was a genocide in which Adolf Hitler s Nazi Germany and its collaborators killed about six million Jews. The Holocaust was the systematic annihilation of six million Jews during the Nazi genocide - in 1933 nine million Jews lived in the 21 countries of Europe that would be occupied by Nazi Germany during World War 2. By 1945 two out of every three European Jews had been killed. But today I will talk about the United States’ Response to the Holocaust. There two main historiansRead MoreThe World Of The Holocaust853 Words   |  4 PagesOne common assumption that people make about the Holocaust is that the atrocity was an event unique to world history. It is not often taught in United States history classes that there were events previous to World War II that set precedence that allowed the Holocaust to occur under Nazi Germany rule. Generally, history classes do not explore colonialism outside of the United States, so it is no surprise that very few people are aware of German colonialism in Africa, let alone how Germany’s actionsRead MoreThe World Of The Holocaust1020 Words   |  5 PagesIt was a time in world History when the world was at war. It was the between the super powers, which was known as the Allies and the Axis alliances. The major countries that played a key part in the war was United States, United kingdom, Japan and Germany. Many lives were loss on both fronts during this conflict. It also launch us into a New age of technology war ware, Which is known as the Nuclear Age. When the first atomic bomb was dropped on two major cities in J apan, it changed the hole out comeRead MoreThe World Of The Holocaust1449 Words   |  6 Pagesdescribe the Holocaust. The Holocaust affected the lives of millions because of the hate inside of the Nazi’s. Why would the Nazi’s do this? This is a question almost nobody can answer. What we do know are the effects of the Holocaust; specifically, on the child survivors of the Holocaust. The Holocaust created a struggle with interpersonal relationships, psychological difficulties, and caused child survivors and their families have a drive for resilience. Most people could say the Holocaust bring feelingsRead MoreThe World Of The Holocaust1022 Words   |  5 PagesThe Holocaust It was a time in world History when the world was at war. It was the between the super powers, which was known as the Allies and the Axis alliances. The major countries that played a key part in the war was United States, United kingdom, Japan and Germany. Many lives were loss on both fronts during this conflict. It also launch us into a New age of technology war ware, Which is known as the Nuclear Age. When the first atomic bomb was dropped on two major cities in Japan, it changedRead MoreThe World Of The Holocaust1191 Words   |  5 PagesAlbert Einstein once said: â€Å"This world is a dangerous place to live; not because of the people who are evil, because of the people who don t do anything about it.† This means that all people are responsible for what happens in this world on some level. Events such as the Holocaust occurred because many remained silent. Many lives were lost during the Holocaust during the intense years of 1933-1945. The Holocaust took place in Germany, the home of the Nazi regime. The Nazi’s were led by Adolf Hitler