Why Is the Periodic Table Important

The periodic table has gone through many changes since Dmitri Mendeleev drew up his original table in 1869, yet both the first table and the modern periodic table are important for the same reason: The periodic table organizes elements according to similar properties so you can tell the characteristics of an element just by looking at its location on the table. Before all of the naturally occurring elements were discovered, the periodic table was used to predict the chemical and physical properties of elements in the gaps on the table. Today, the table can be used to predict properties of elements yet to be discovered, although these new elements are all highly radioactive and break down into more familiar elements almost instantly. The table is useful for modern students and scientists because it helps predict the types of chemical reactions that a particular element is likely to participate in. Rather than memorize facts and figures for each element, students and scientists need only glance at the table to learn much about the reactivity of an element, whether it is likely to conduct electricity, whether it is hard or soft, and many other characteristics. Elements in the same column as one other are known as groups and they share similar properties. For example, the elements in the first column (the alkali metals) are all metals that usually carry a 1 charge in reactions, react vigorously with water, and combine readily with nonmetals. Elements in the same row as one other are known as periods and they share the same highest unexcited electron energy level. Another useful feature of the periodic table is that most tables provide all the information you need to balance chemical reactions at a glance. The table tells each elements atomic number and usually its atomic weight. The usual charge on an element is indicated by an elements group. Trends or Periodicity The periodic table is organized according to trends in element properties. As you move from left to right across a row of elements, the atomic radius (the size of an elements atoms) decreases, ionization energy (the energy required to remove an electron from an atom) increases, electron affinity (the amount of energy released when an atom forms a negative ion) generally increases, and electronegativity (an atoms tendency to attract a pair of electrons) increases. As you move from top to bottom down a column of elements, the atomic radius increases, the ionization energy decreases, electron affinity usually decreases, and electronegativity decreases. Summary To summarize, the periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.Columns (groups) and rows (periods) indicate elements that share similar characteristics.The table makes trends in element properties apparent and easy to understand.The table provides important information used to balance chemical equations.

Sons of Anarchy- Ethics/Race Essay - 2311 Words

! Gang Representation in Sons of Anarchy Sons of Anarchy is an American television drama created by Kurt Sutter that airs on FX network. The drama series, also known by its acronym SOA or SAMCRO, is centered around the culture of motorcycle gangs and includes multiple gangs with differentiated racial makeups. The series is set in current-day California in a fictional town called Charming. The town is modeled as a small-town community which has limited government interference normally and lenient authorities. The first season was aired in 2008 and followed the lives of motorcycle gang members in the caucasian gang, called the Sons of Anarchy. Other gangs included in the series were a black gang, called the one-niners, and a†¦show more content†¦In the end Juice admits to the main character Jax, a young white male, that his father is indeed black. Instead of using this opportunity to show how outdated the rule is and that progress can be made against racism no matter how long the rule has been around Sutter decided t o have another character again use race to blackmail Juice. I understand the need for authenticity but I felt this scene was just reinforcing to all watching that it is shameful to be black and it can be used as threat. It was a weak way of showing how racism can effect someone after all the build up during the season and concern for his life. In a matter of one scene it was brushed off, there was no lesson learned nor was there any realism in supposed racist actions of the gang. The ending was neither insightful nor authentic. It just seemed to end without any real conclusion. It had also seemed out of place in the story because during season two the Sons of Anarchy spent the whole season fighting a white supremacist gang. During that season the gang seemed just as disturbed by the ideas of the white supremacist gang as much as their threat to Sons of Anarchy’s control of Charming. It seemed to me that Sutter was using Juice’s race as a shock-factor. This was no surprise to me though as there are many off-hand racist jokes made during the show as well that seem to have little value. ForShow MoreRelatedâ€Å"Theme of Post-Colonialism in Things Fall Apart†657 Words   |  3 PagesFall Apart† The Post-Colonial literature that describes what happens to a strong African, Asian once colonist settle in the area. Post Colonial literature considers vexed cultural- political questions of national and ethnic identity, otherness, race, imperialism and language, during and after the colonial periods. 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Truman Show Essay Free Essays

Peter Weirs 1998 film The Truman Show is a metaphor for modern society, it focuses on the way the media manipulates reality. We are complicit in that manipulation and also victims of it. The film challenges us to critique the media and extricate ourselves from the â€Å"reality† it surrounds us with. We will write a custom essay sample on Truman Show Essay or any similar topic only for you Order Now The Truman Show tells us about life and reality, it portrays from what is real and what is a fantasy. Truman’s world is somewhat like our own world because of the way things are perceived and approached. Everyone expects and wants a true reality and build things around a world that we all seem to want and truly believe in. This is a similar case to what Christof seemingly tried to create, however it was more forced and mannered compared to what the worlds view and society’s form of a world would be like. We all expect things to be perfect; however nothing can be too perfect. There has always got to be imperfections or something going wrong. In a way we are set up, naturally you’re always going to want something, but when you see something better you want that instead; it’s the same with wanting things that you can never get. The concept is the same. It’s that lust of just wanting to be accepted into the world accordingly to what society approves of, just that feeling of wanting to be accepted into the world. In Truman’s case, everything was controlled. From staging to lighting, friendships, and relationships and just how absolutely everything was set out. It was a manifested stage; the perfect little world where everything was always right. In our world, reality; we try and make it the same, however things don’t go our way all the time which causes the little caresses in time and change, completely flipping a scenario around therefore causing things to go unexpected. Not as planned and not as we have hoped. We are controlled by forces that we cannot handle such as the push and gravitational pull. The earth’s atmosphere and weather, our love and emotions. Little things like this that has such a big impact into the world; our world and our reality. The media plays a big role in both our world and Truman’s world. We are impacted by it every day and most don’t seem to notice. We rely on it a lot and we all seem to revolve around the media always wondering and dependent so we know what to expect next. The media plays an important role in The Truman Show because it is a set up world. The way that Christof has made it to be, to advertise to the viewers watching his show. Almost every way that it is staged out, there is a product being sold or just the way that they talk to each other is fake, you can tell that it’s been scripted and Truman is really only oblivious to this because he chose to believe that this is his real world and this is what it is made out to be until he has suspicions into what is really occurring. In our world, the media somewhat plays a similar part. We rely on it to get our information. It can be used for good and bad. There really is not telling in what to expect next coming from the media as they are so unexpected and mysterious. As it is, we are a lot like the viewers of the Truman show because we support the media industry. We are keeping the industry going by encouraging it and egging it to go on. The media is our form of entertainment and it’s almost our crucial bit of daily medicine, like we must take some in each day in order to survive and go on. We rely on the media as much as it relies on us to keep it running. In modern society we accept whatever goes on and most of the time approve and agree of whatever the media is saying, posting or filming; either broadcasting online or offline. It has become so relevant in our world and especially to this generation. We are like the viewers of the Truman Show because whatever the media plays, and we watch it is just another form of entertainment for us and the people’s lives that they intrude on is merely a form of enjoyment to our eyes. How to cite Truman Show Essay, Essays