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Essay on why the periodic table is important
Development of periodic table
Development of periodic table
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The periodic table was the most important development in the field of chemistry. Do you agree? The periodic table was the most important development in the field of chemistry and is the most important chemistry reference there is. The periodic table played a crucial part in the development in the field of chemistry as it allowed for a way of organising the elements so that it was possible to make predictions about both their chemical and physical properties based on the elements’ position in the table. The periodic table is grouped into many different divisions: Groups, Periods, Blocks, Metals, Metalloids and Non- Metals. It also allowed for many periodic trends to be identified. Because of the development of the periodic table, we are able to identify the electron …show more content…
It plays a crucial part in the development of the field of chemistry as it allows the elements to be organised so that it is possible to predict both their chemical and physical properties based on the elements’ position in the table. Trends in the periodic table such as groups, periods, blocks, metals metalloids and non-metals as well as trends between each grouping method would be difficult and almost impossible to identify without the existence of the periodic table. Also, periodic trends such as electron configuration, atomic radii ionisation energy, electronegativity, electron affinity and metallic character would not be identified without the discovery of the periodic table. Although the periodic table has minor flaws such as different elements not fitting in to some trends and more important discoveries such as the atomic theory and the synthesis of Urea were important to the field of chemistry, the periodic table is the foundation or the building blocks for further discoveries and so its development is important to the field of
Although some of the elements have been known for thousands of years, our understanding of many elements is still young. Mendeleev’s first Periodic Table contained only 63 elements, and about that many were discovered in the following 100 years. Just like countries, emperors, philosophers, and cities, elements have histories, too.“The Disappearing spoon” by Sam Kean, is a detailed history of the elements on the Periodic Table. Kean does a important job of telling every single element’s journey throughout the history of mankind: from the earliest times, when chemistry was intermingled with alchemy, to these days of modern chemistry. For example: Thallium is considered the deadliest element, pretending to be potassium to gain entry into our cells where it then breaks amino acid bonds within proteins. The CIA once developed a plan to poison Fidel Castro by dosing his socks with thallium-tainted
The Periodic table of elements is an extremely important and useful scientific tool, mostly in the area of chemistry, but also in many other scientific areas. It has been around for hundreds of years and over time has been continuously added to and develop by many different scientists. The Periodic table contains over 100 elements, each one with varying physical and chemical properties. The Periodic table has not been simply one person creating and discovering all the elements, it has been the combined work of many different scientists. Although, Dimitri Mendeleev is often considered the creator or even father of the Periodic system.
We all know the saying, “Don’t judge a book by it’s cover.” Similarly, every element in the periodic table has its’ own story and its’ own unique meaning. However, the average high schooler simply associates these elements as something used in their chemistry classes. In fact, the elements seen on the periodic table actually have much more to do in our daily lives and in history than most people know. While giving a whole new perspective to the meaning of Chemistry, author Sam Kean successfully recounts the hidden tales through humor and wit in his bestselling novel The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table of Elements. Specifically, Chapter 15, “An Element of Madness,” addresses the lives of several “mad scientists” associated with selenium, manganese, palladium, barium, and roentgenium that ultimately led to their downfall.
Elements are the basic building blocks of matter due to the fact that they are chemically the simplest substances. Whether we can find them in the air or in our gold/silver necklaces, elements are everywhere! One essential element is hydrogen, the first element on the period table (located under Group 1 as an alkaline metal) is composed of a single proton and electron; therefore having an atomic number and atomic mass of 1 and electron configuration of 1s1. In fact, hydrogen is the lightest, simplest and most commonly found chemical element in the universe (it makes up about 90% of the universe by weight). Interestingly enough, the heavier elements on the periodic table were either made from hydrogen or other elements that were made from hydrogen. The most common isotope formed of hydrogen is protium, with 1 proton and no neutrons. Hydrogen can also exist as both positively or negatively charged. The physical form of hydrogen at room temperature is a colorless and odorless gas. Hydrogen gas is extremely flammable and because of this chemical property, it is used as fuel for the main engine of space shuttles. Hydrogen is an important element and has received a lot of recognition throughout history for its usefulness.
To think about all the time that went into composing a chart that can tell you about any atom around you is simply mind blowing. Not only was it necessary to organize all of the data but the data itself had to be uncovered. A simple table on a piece of laminated paper took hundreds of years of fine tuning and trial and error. That is what makes the periodic table so special and is why it should not be taken for granted.
In 1869 Dmitri Ivanovich Mendeleev a Russian chemist (1834-1907) constructed the first accepted version of the modern periodic table (Linstead, 2012, p. 115-116) wher each element had its own box, grouped accordingly horizontal by the atomic mass and vertical in reference to similar chemical properties. Later realising he had incorrectly placed elements Mendedleev moved them where he believed resemblances suggested they should be positioned. Mendeleev left gaps in his model for many undiscovered elements where he predicted they would go according to the knowledge he had acquired ("periodic table history", n.d.). He was also successful in working out the ‘periodic law’- “law stating that many of the physical and chemical properties of the elements tend to recur in a systematic manner with increasing atomic number. Progressing from the lightest to the heaviest atoms, certain properties of the elements approximate those of precursors at regular intervals of 2, 8, 18, and 32.” ("PERIODIC LAW", n.d.) first published in papers of 1869 ("Julius Lothar Meyer and Dmitri Ivanovich Mendeleev | Chemical Heritag...
The Periodic Table is based around the Atomic Theory. Firstly people believed that everything was made up the four elements Earth, Fire, Wind, and Water. This theory evolved into everything being made up of atoms. Breakthroughs throughout history such as the discoveries of the nucleus, protons, neutrons and electrons have pushed this theory forward to where it is today.
periodic table is arguably one of the most important developments in the history of all science. Development of the table spanned over more than 2000 years beginning with the proposal by Aristotle around the year 330 BC that there is limited number of elements (though at the time he referred to them as roots) that make up everything in the universe, though he believed these elements to be simply "water, fire, earth, and air" and made no further contributions to the development and understanding of the table and its properties.
Then both Meyer and Mendeleyev built periodic tables alone, Meyer more impressed by the periodicity of physical properties, while Mendeleyev was more interested in the chemical properties. Then Mendeleyev had published his periodic table and his law in 1869 and forecasted the properties of the missing elements, and chemists then began to be grateful for it when the discovery of elements was predicted by the table that had taken place. Although, periodic tables have always been related to the way scientists thought about the shape and structure of the atom, and has changed over the years exactly for that reason.
"A periodic table is an arrangement of elements in which the elements are separated into groups based on a set of repeating properties." Basically it shows us all known elements in the world. For one to read the periodic table he should beware that the atomic number comes first in the square , and referring to the atomic number its the number of protons found in the nucleus of an atom. Following the atomic number is the symbol, which is usually the abbreviation of the element's name. For example Carbon is referred to as " C". Then, the element’s name is shown right after the symbol. Lastly, there's the mass number, which is the number of protons and neutrons in the nucleus of an atom. So simply for us to find the number of protons we automatically
Without famous chemists like Dmitri Mendeleev, Antoine Laurent de Lavoisier, Albert Einstein, John Dalton, and other great chemists we would be clueless to the wonderful, confusing, and very much needed world of chemistry. Before chemistry society did not know about elements, they did not know about substances like acids and metal, or the difference between gold and lead. There are many simple things that would remain unknown if chemistry wasn’t as advanced as it is today. Chemistry is important to everyday life, because everything is made of chemicals. Chemistry is outside with the leaves changing colors in the fall. The supplies used to do household chores are made from chemistry. Chemistry is literally in everything from the food you eat to the air you breathe. It’s in your soap, your emotions, and everything you can see or touch.
The periodic table, used worldwide by scientists, teachers and students, for quick location of information about elements. The periodic table did not come by overnight though, the periodic table is a table formed from years of work, on the atomic structure. It all started years back with Democritus and his discovery of the atom. This was followed up by John Dalton many years down the track, after elements had been discovered Dalton attempted to create a way to make the elements easier to remember. 84 years later, JJ Thomson discovered electrons, which were key to the periodic table, and in 1889, Dmitri Mendeleev invented the periodic table. Years later Henry Moseley worked out how to measure atomic numbers of elements, and just 9 years after Neil Bohr explained the structure of the atom which further explained why Mendeleev had placed each element in a specific row or column. Finally James Chadwick discovered the neutron in 1922.
varied periodically with atomic number. The question of why the periodic law exists was answered as scientists developed an understanding of the electronic structure of the elements beginning with Niels Bohr's studies of the organization of electrons into shells through G.N. Lewis' (see a picture) discoveries of bonding electron pairs. The Modern Periodic Table The last major changes to the periodic table resulted from Glenn Seaborg's work in the middle of the 20th Century. Starting with his discovery of plutonium in 1940, he discovered all the transuranic elements from 94 to 102.
The history of chemistry has a span of time reaching from ancient history to the
Before chemistry, I would say society was a mess. We did not know of the Periodic Table of the Elements. Which is quite frankly mind blowing considering the fact that elements make nearly everything there is around us up. People living today will live much longer lives than they would have back then because Chemistry is what helps us discover all of our medicines, vaccines, and etc. We did not know of DNA. This is the carrier of all of our genetic information. Without chemistry, we wouldn’t have had liquid oxygen, which is rocket fuel. Without that the space race would have never happened. This means, we would not have satellite TV or internet. Without internet I would not be typing this chemistry paper right now. Without chemistry we wouldn’t have cell phones. Without cell phones, teens today would simply not know what to do with themselves. It is one thing after another. The world needs chemistry!