Heres What Happens If You Drop Francium in Water

Francium is element No. 87 on the periodic table. The element can be prepared by bombarding thorium with protons. An extremely small amount occurs naturally in uranium minerals, but it is so rare and radioactive that there has never been enough of it to actually see what would happen if a piece was dropped into water. However, scientists know for sure that the reaction would be energetic, possibly even explosive. ​ The piece of francium would blow apart, while  the  reaction with water would produce hydrogen gas, francium hydroxide, and a lot of heat. The entire area would be contaminated with radioactive material. Why Francium Reacts so Strongly The reason for the strong exothermic reaction  is because francium is an alkali metal. As you move down the first column of the periodic table, the reaction between the alkali metals and water becomes increasingly violent, as follows: A small amount of lithium will float on water and burn.Sodium burns more readily.Potassium breaks apart, burning with a violet flame.Rubidium ignites with a red flame.Cesium releases enough energy that even a small piece blows up in water.Francium is below cesium on the table and would react more readily and violently. This occurs because each of the alkali metals is characterized by having a single valence electron. This electron easily reacts with other atoms, such as those in water. As you move down the periodic table, the atoms become larger and the lone valence electron is easier to remove, making the element more reactive. In addition, francium is so radioactive that it is expected to release heat. Many chemical reactions are accelerated or enhanced by temperature. Francium would input the energy of its radioactive decay, which is expected to magnify the reaction with water.

Answering questions Free Essays

2-A. Recently, a comedian on a television show remarked that he thought it was funny that people turn the car radio off when they are looking for a house number in a strange neighborhood. What theory of attention is this comedian adhering to? The comedian based his remarks on the theory of divided attention. We will write a custom essay sample on Answering questions or any similar topic only for you Order Now This theory states that attention can be divided into two separate states, wherein one can attend to two things or stimuli at the same time, without sacrificing the quality of attention given to either of the two stimuli (Reisberg, 2001). Thus to the comedian, one can continue listening to the radio and at the same time look for the house number, and it perfectly makes sense to him that a person can do both of it since it does not really require an intense concentration. However, a case in point is that looking for a house number in a long row of houses may be quite a challenging task, one that requires concentration and selective attention. Yes, it can be said that keeping the radio on would not make any difference but to those who prefer to look closely and to be able to do so safely would naturally turn their radios off. Just imagine yourself driving slowly in a street you are unfamiliar with and keeping the radio on would mask the noise of incoming traffic or even pedestrians. Besides, when a person is involved in one task, like looking for a house, then one instinctively attends to it and disregards the other sounds, sights and disturbances in the immediate environment. Divided attention is very real, we engage it once in a while especially if we multi-task but we could do so in a limited period, for example think of how you can possibly manage to entertain questions from an officemate at your table and at the same time talk to someone on the phone, you could do both for a maximum of 2 minutes, but eventually one stimuli takes greater attention and we must give our full attention to it. On the other hand, with training, anybody can make use of divided attention, but its contributions and benefits in engaging in it remains to be seen since much research has to be done in this area. 2-B. Based on what you have learned about perception and attention, do you think it’s safe for people to talk on cellular phones while they are driving? Learning about how we perceive the world around us gives us a better way of understanding how intricate the human mind is and how even a faculty that we often take for granted can have a profound impact in our daily lives. Perception refers to a complex process of how we receive a stimuli, how our brain process the stimuli, and how our mind tells us what to do and how to react to the stimuli (Reisberg, 2001). It can be said that a disruption of any of the lines of our perception may have adverse consequences; sometimes it can be bizarre, like when a person cannot recognize the face of love one but instead are able to say that they look like a family member. Taking our study of perception into our daily activities, a debated issue like â€Å"is it safe to talk on the cell phone while driving† is better explained. I still believe that it is not safe to talk on the cellular phones while driving. Driving already entails a number of processes and is quite demanding of our attention, like when you are in the freeway, one has to be conscious of incoming traffic, cars at you back, the speed limit of the highway, and even looking out for possible mishaps in the road, on top of which, the driver must be conscious of the cars fuel level, brake fluid and tire conditions. So how could anybody be able to talk on the phone while driving? Talking on the phone also demands attention; we have to perceive and process what the other person is saying, and to even think of the appropriate response to what they are saying. Theories on perception have stated that our mind works overtime just to process and be able to respond to external stimuli, and that each part of the brain is involve in different ways just to come up with the correct processing of information (Reisberg, 2001), like being able to recognize faces of family members. Perceptual illusions demonstrate that what we see may not be true or real, hence while driving we may not be able to accurately tell how far we are from the car ahead of us or how near we are to the railings without our full concentration. Reports have shown that many people die on the road or in car accidents than any disease. Perceptual overload occurs when we drive and talk on the phone, based on previous researches (Reisberg, 2001), perceptual overload makes us incorrectly perceive our surroundings and hence we may see what is not there, or we may not see what is really there. When we overload our senses it would mean that one part of the brain or our faculties might be sacrificed to compensate for the attention we give to another stimulus. And in an activity like driving which in itself is a high-risk behavior, we need complete control of our faculties, thus talking on the cell phone is not advisable. 2-C. Write a 200 word summary and critical analysis on Rayner’s article. Discuss what the article is basically about, its strong and weak points, how convincing (or unconvincing) you find its arguments, and how it might be followed up (e.g., if you think the article suggests any promising, new ideas for future research, describe what they are and how they might best be pursued.) The article â€Å"Eye Movements in Reading: Recent Developments† by Keith Rayner (1993) presents the latest development in the study of eye movement in the reading process. The strength of the article is that it gives a background of what has been discovered so far in the field of study, the article argues that studying eye movement is important for it help build theory and also used to infer perceptual and cognitive processes during reading thus the objective of the article. It also presents a number of theories that have used new methods in studying eye movement. What was weak about the article was that it was not able to connect how the new methods of studying would contrite to a better understanding of the cognitive processes that occur during reading. The article basically was not convincing when the author says that much remains to be seen when researchers realize how interesting a research data eye movement can be. The article does not arouse this interest and simply goes on to say that eye movement is a natural consequence of reading, which contradicts his claims earlier in the introduction part. The article was also too technical for the average reader even if the reader is interested in eye movement. References Rayner, K. (1993). Eye movements in reading: Recent developments. Current Directions in Psychological Science, 2 (3): 81-85 Reisberg, D. (2001). Cognition: Exploring the science of the Mind, 2nd ed. New York: W.W. Norton Company, Inc.                   How to cite Answering questions, Essay examples

Quiche, Tornadoes, And The Print Media free essay sample

I consider myself lucky, because I hold the solution to a problem that most kids my age still struggle with. Many of my friends are still unsure what they want to do with their lives. Fortunately for me, Ive had my mind made up for a long time. I want to be a writer, a writer for a newspaper or magazine. It wasnt always this cut and dry. When I was six, I thought I had my mind made up too. I wanted to be a television chef with my own cooking show. One of my personal favorites was Yan Can Cook. The flashing knife blades and words like saut fascinated me like a crowd at the fireworks. That was my future, Id be the next Frugal Gourmet! After a few years, I came to the realization that I had no culinary abilities at all (if I remember correctly, flaming cookies were somehow involved). We will write a custom essay sample on Quiche, Tornadoes, And The Print Media or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page I was watching TV again, and the weather was on. Why not meteorology? After a chance meeting with the television weatherman, that became my next dream job. I went all out this time. The junior weather set, maps, thermometers all found their way under my Christmas tree. My room became its own little analysis area, but I used to call it the forecast center. For a while, I kept up my studies. I can remember when Hurricane Bob flew through New England, and there I stood with the Weather Channel on (until we lost power) charting the storms progress. I was sure that this was the one, my life would unfold on the six oclock news. Until the seventh grade, I held onto my visions of stormy days and the foretelling of them. This was when everything changed. I had to write a paper for English class the schooltime classic How I Spent my Summer Vacation. I did it, and nothing seemed out of the ordinary. However when I handed it in, it got quite a response (and not because golfing a lot was the most interesting topic in the world). The teacher told me it was the best writing he had seen in a long time. I couldnt believe it, was this my hidden talent? I began to read more newspapers and magazines, and noticed a trend. Comments on things I would have written the piece differently had I been the writer began to surface. This kept happening, and I thought maybe it was time I threw my hat in the journalism ring. The rest, I suppose, is history. Now I write for the school newspaper, and I love every minute. The exposure, the expression, and the fun of semicolons are just a part. The way my dry wit could influence those around me leaves me both proud and in awe at the same time. Who knows, maybe one day Ill end up writing about cooking, in bad weather no less.

Death And Maiden Essays - British Films, English-language Films

Death And Maiden The Polanski film Death and the Maiden is a wonderful and intelligent interpretation of Ariel Dorfman's human rights problem play. Polanski has produced, in this film, an exceptional piece of direction, in which his own personal, emotional input is evident. The main theme of the play is an extremely personal one for both playwright (and scriptwriter) and director. Both Dorfman and Polanski have had to face and flee the horrors of dictatorship and human rights violations: Dorfman in Chile, under General Augusto Pinochet, and Polanski in Poland under the Nazis. But despite this similarity in past experience, significant differences exist between the original play and the film. Apart from the specific techniques of lighting and composition, whose possibilities are greatly widened in the medium of film, we see differences in both the different emphases and implied viewpoints on the various themes that the play touches on and, perhaps more importantly, the way the characters are portrayed. While the old concept of "whatever doesn't kill you makes you stronger" is present in both the play and the film (particularly in the characterisation of Paulina), it is much more prevalent in the movie. We can see Paulina's strength from the start. As she strides confidently around the house and violently tears off a piece of chicken, the suggestion that she is unsuited to the domestic position which she has obviously been forced into by the side effects of her traumatic experience need not be made any clearer. Although possessing remarkable strength in both texts, the movie shows a much stronger, almost completely masculine Paulina. This Paulina has been almost entirely defeminized by her ordeal, physically, symbolised by the scarred breast and her desire to "adopt" a child, which also serves as a glimpse of the vulnerable element of womanhood in her character that still remains. Throughout the bout of verbal jousting that goes on in the opening scene Paulina is able to hold her ground much more firmly than she appears to do in the play. In Polanski's version of the scene she actually manages to use her domestic role to gain power in the argument, fiercely flinging the dinner in the bin. Weaver's powerful acting conveys the unmistakable tension associated with an incredible amount of suppressed anger. It is not until the following scenes, when she is finally confronted with the cause of that anger, however, that we see its full magnitude and destructive potential. In the surreal, dim lighting of her bedroom Paulina is shaken by a strangely disturbing laugh upon recognising Roberto Miranda's voice as that of her tormentor. This moment sees the birth or manifestation of another facet of Paulina's character, the part of Paulina's mind that fantasized about doing to her torturers what they had done to her. This is the unbelievably unreasonable Paulina; she is a Fury, a mythical deity, the embodiment of vengeance, unsusceptible to male logic or opportunistic, careerist rationalisation. Polanski makes Paulina throw the car over the cliff-edge. In doing this she is not only destroying a phallic symbol, and thus undermining Roberto's sexuality and any claims he has on sexual dominance or superiority, she is destroying a perfect symbol of the male thirst for power and control, and the pragmatic logic to which her need for revenge has been sacrificed, into the infinite, chaotic abyss that defies all these principles, and unquestionably swallows it up. In doing this she breaks the railing, civilized society has created to guard itself from that chaos, allowing those forces of suppressed rage to escape. Polanski's Paulina re-enters the house, a different person. Illuminated by typically horror-movie-style lighting. Her sharply focused face ? lit by an almost electric blue with harsh shadows cast across it, highlighting her features ? contrasts strongly against the blurry background. Having bound Roberto, she is physically empowered by the gun (P: "...as soon as I drop the gun all discussion will cease...you'll use your strength to win the argument...") to act aggressively. The gun is another phallic symbol; hence much of this aggressive behaviour takes on a sexual quality. Unlike Dorfman's play, Polanski does not try to make us accept, without a struggle, the simple truth that to victimize our tormentors is to sink to their level. We get the general feeling that Polanski is much more sympathetic to Paulina and the type of justice her injuries call out for. In Polanski's film adaptation, far from being driven by blind rage, Paulina is the only character that takes responsibility for her own actions, and cares little for the self-interested considerations of consequences.

Free Essays on The Case Of Agostino Steucco

Polishing The Papal Image In The Counter-Reformation: The Case of Agostino Steuco One of the results of the Pope’s persistence to keep a papal system intact was the branching off of Catholics into Protestants. In this article, there is an analysis of a writing by Agostino Steuco called The Two Books Against Lorenzo Valla Concerning the False Donation of Constantine, in this article it dissects the very relevance of a papal system in the Catholic church. It gives a plethora of â€Å"reasons† for why the system should remain intact. First, he states that Rome’s secular power and holdings were an integral part of the â€Å"spiritual welfare of people†. (Delph, 1992; 37) Second, the wealth of the Pope was fundamental for the church to function. Third, without the temporal power, the people would abandon their religion and begin to have an â€Å"anti-social behavior†. (Delph, 1992; 38) Fundamentally, from a humanistic understanding of human nature, Steuco believed that temporal authority of the papacy played a positive role in th e spiritual life. This article gives rise to many reasons that led to the split and formation of the Protestant religion. Steuco, with his humanistic approach defends the temporal power and processions of the papacy. He justifies this by making a point that secular power and holdings of the church played a part in the â€Å"spiritual welfare of people† (Delph, 1992; 37) He then correlates â€Å"rituals and visible signs of the sacred† (Delph, 1992; 37) necessary for worship. These socializing effects that the people enjoyed were only because of the temporal might of Rome. The argument that Steuco gave made it clear that the ornate nature of religion brought people to worship. Steuco makes a point when referring to the Old Testament as well as the New Testament in making the claim that God himself always appeared â€Å"†¦in forms that rendered him venerable and terrifying†. (Delph, 1992; 40) Steuco ... Free Essays on The Case Of Agostino Steucco Free Essays on The Case Of Agostino Steucco Polishing The Papal Image In The Counter-Reformation: The Case of Agostino Steuco One of the results of the Pope’s persistence to keep a papal system intact was the branching off of Catholics into Protestants. In this article, there is an analysis of a writing by Agostino Steuco called The Two Books Against Lorenzo Valla Concerning the False Donation of Constantine, in this article it dissects the very relevance of a papal system in the Catholic church. It gives a plethora of â€Å"reasons† for why the system should remain intact. First, he states that Rome’s secular power and holdings were an integral part of the â€Å"spiritual welfare of people†. (Delph, 1992; 37) Second, the wealth of the Pope was fundamental for the church to function. Third, without the temporal power, the people would abandon their religion and begin to have an â€Å"anti-social behavior†. (Delph, 1992; 38) Fundamentally, from a humanistic understanding of human nature, Steuco believed that temporal authority of the papacy played a positive role in th e spiritual life. This article gives rise to many reasons that led to the split and formation of the Protestant religion. Steuco, with his humanistic approach defends the temporal power and processions of the papacy. He justifies this by making a point that secular power and holdings of the church played a part in the â€Å"spiritual welfare of people† (Delph, 1992; 37) He then correlates â€Å"rituals and visible signs of the sacred† (Delph, 1992; 37) necessary for worship. These socializing effects that the people enjoyed were only because of the temporal might of Rome. The argument that Steuco gave made it clear that the ornate nature of religion brought people to worship. Steuco makes a point when referring to the Old Testament as well as the New Testament in making the claim that God himself always appeared â€Å"†¦in forms that rendered him venerable and terrifying†. (Delph, 1992; 40) Steuco ...

Corhn's Disease Annotated Bibliography Example | Topics and Well Written Essays - 750 words

Corhn's Disease - Annotated Bibliography Example The authors aimed to deteremine the effect of using corticosteroids as a therapeutic intervention for Crohn’s disease, particularly Azathioprine and Infliximab, studied individually and subsequently, in combination. Through expounding on the study design and the patients who were selected to be part of the study, the authors presented the study treatments and an evaluation of deemed efficacy, as well as safety of the interventions noted. The findings noted the highest effective rate of efficacy in treatment for combining the two corticosteroids, to wit: â€Å"infliximab monotherapy and combination therapy with infliximab plus azathioprine, as compared with azathioprine alone, resulted in significantly higher rates of corticosteroid-free clinical remission among patients with moderate-to-severe Crohns disease† (Colombel & et al., 2010, p. 1393). The Crohn’s & Colitis Foundation of America (2012) provided an online comprehensive discourse regarding Crohn’s disease through a discussion of various sub-topics ranging from: understanding the diagnosis, an overview of the illness, it being identified as a chronic illness, population or people at risk, its causes, signs as well as symptoms, types, patterns, and treatment with recommended medications. Other relevant considerations were likewise expounded such as options for surgery, the required diet and nutritional intake, alternative and complementary interventions, coping techniques as one lives with the illness, and additional information and support systems which could assist people interested to find out more on Crohn’s disease. This site is very informative and useful for researchers and those found to have family members afflicted with the illness. The authors presented a comprehensive study regarding management of Crohn’s disease through initially providing

Outline the main elements in Karl Marxs social theory and examine the Essay

Outline the main elements in Karl Marxs social theory and examine the strengths and weaknesses of his theory. Explain why Marxs social theory has had such a - Essay Example Ideologies in this context refer to the values, feelings and ideas by which people perceive their particular societies which the upper-class controls so as to prevent people in the lower-class from knowing how society truly operates. For example, literature can be used to form a society’s ideology as was prevalent in eighteenth century England. The fundamental conception behind Marxism is identified as materialism, socialism and the unification of action and structure. Marx’s idealistic view of socialism involved actions that would better serve society within the realm of unselfish inspiration, a society not interested in existing social inclinations. The wealth of a nation should be divided not according to greed but to need. He sees the technological advances as the basis for entire societies to be redistributed in accordance to the requirements of the upper class. Marx â€Å"sees the source of these changes in changing technologies, ‘productive relations,†™ which bring changes in the way people are organised or ‘social relations.’† (Sowell, 1985: 70). His theory does not suggest philosophical concerns or the study of social structures alone but the actions necessary to implement social change as well. One of the most often used axioms in the Marxist ideology is that their ambition is ‘not to study society but to change it.’ According to Applebaum (1988: 15), society should â€Å"understand how Marx sought to bridge the concerns of both philosophy and science in developing a theory that operates simultaneously at the levels of structure and action [†¦] the philosophic critique of consciousness, the ‘scientific’ analysis of capitalist economic institutions, and the historical study of politics and society.† This is the intent of this discussion along with identifying various strengths and weaknesses of the theory and to examine the reasons why Marx’s social theory has