Topic 2
Back to Sam Kean's book, The Disappearing Spoon. It is divided into five seperate sections. The first section is called; Orientation: Column by Column, Row by Row. This section is broken
The periodic table is composed of eighteen columns and seven horizontal rows, with two additional rows underneath. There is grand total of 112 elements in the periodic table, each of which is placed in a designated spot on the table and cannot be moved. Different areas on the table have elements that are made of different components. Elements that are in the same column are more similar than elements in the same horizontal row. Seventy five percent of the table is made up of metals, and a couple of the columns on the right of the table have gases. There are only two elements that are liquids- mercury and bromine. Column 1 contains the alkali metals, which suddenly combust when exposed to air or water. Columns 3-12 are the transition metals, which contain heavier atoms, which are more flexible in how they organize their electrons. Column 17 is made up of the more reactive gases- the halogens. The noble gases are in column 18. The electrons are the most significant part of an atom. When atoms don’t have the sufficient number of electrons they need in their outer level, they will do whatever they can to get the number they need. The number of protons an atom has is its atomic number. The atomic number plus the number of neutrons the atom has is the atom’s atomic weight.…
1. A newer form of the periodic table has been established, but is not universally used at this time. Go to http://www.sciencenews.org/view/generic/id/67938/description/Periodic_table_gets_some_flex and read the article to answer the following questions:…
Chemistry is a branch of physical science that studies the composition, properties and behavior of matter (www.acs.org). Sodium hydroxide is considered to be a strong base because it breaks up in water. When mixed with certain metals it produces potentially explosive hydrogen gas. Many alchemists believed that doing certain chemical reactions that they would be able to change metals into gold. An alloy is a mixture of different metals and is technically considered solutions. In 1983, pennies were made with a mixture of both zinc and copper until after when they were made if zinc as the core and copper as the covering.…
| - I can explain in detail Dimitri Mendeleev’s work about the periodic table and what he discovered.- I can also include information about the work of John Newlands, Lothar Meyer and John Dalton and explain how their work led to the development of Dimitri Mendeleev’s discoveries about the Periodic table.(Presentation is EXCELLENT).…
Background: Russian chemist Dmitri Mendeleev is generally credited as being the first chemist to observe patterns emerge when the elements are arranged according to their properties. Mendeleev’s arrangement of the elements was unique because he left blank…
The Things They Carried by Tim O’Brien is a very descriptive story about a group of soldiers and their experiences during and after the Vietnam War. Included in this story of their experiences , is the physical weight of the objects they had to carry during the war. O’Brien not only tells the reader about the physical weight of war material , but also of the mental and emotional weight the war had on the soldiers. He goes into depth about the burdens of guilt, love, memory and terror the war had on his fellow men. O’Brien is sure to exaggerate these emotions in the story and makes it apparent to the reader that the physical weight of the war is heavy, but the emotional and mental weight are both heavier.…
The ancient Greeks made lavish use of perfumes and cosmetics in their religious rites, in grooming, and for medicinal purposes. They built elaborate baths and developed excellent methods of dressing the hair and caring for the skin and nails. Greek women applied preparations of white lead on their faces, kohl on their eyes, and vermilion on their cheeks and lips. The brilliant red pigment was made by grinding cinnabar, a mineral that is the chief source of mercury, to a fine powder. It was mixed with ointment or dusted on the skin in the same way as modern cosmetics are applied…
relate the key features of the periodic table to the conclusions drawn from the practical activities…
1. I just returned home from being interviewed for a new public television program on the mystery of matter and the search for the elements. It was very gratifying to see how keen the film-makers were on understanding precisely how Mendeleev arrived at his famous first periodic table of 1869. This in turn meant that I had to thoroughly review the literature on this particular historical episode, which will form the basis of this blog.…
1. Remove the Chemicool people from the bag and organize them into columns and rows on your desktop. One “person” is missing from your bag.…
The future is extremely ambiguous, and is one of the many wonders that people cannot figure out. Even if people try to plan out the future do not know what the future will hold. In Sylvia Plath’s novel The Bell Jar and Bill Cattey’s poem What Is Happening To Me both share the idea that the future is very indecisive and difficult to face.Through Plath’s characterization of Esther and Cattey’s analogies within his poem, they show the frustration a vague future can behold on individuals.…
Dmitri Mendeleev- first periodic table, organized 63 known elements according to properties, organized into rows and columns. He wrote names, mass and chemical properties on each.…
In this lab we evaluate the solubility of compounds of iron, copper, zinc, and mercury in both water and acid. Coming into the lab we know that iron, copper, and zinc are all found in the the same row of the periodic table, while zinc and mercury are found in the same column. The transition metals are found in groups 3 to 12 and periods 4 to 6. Rows are known as periods and columns are known as groups. They share characteristics, such as being good conductors of electricity, and having a shiny appearance. This experiment will further our knowledge of the organization of the periodic table and the patterns found within in it, in reference to chemical similarities between elements. This experiment is important because it puts us in the position of discovering similarities between this group of elements.…
3. Describe the structure and components of atoms and apply these concepts to the information contained in the Periodic Table, a well as be aware of the classical experiments that lead to the present day models.…
The Civil War in America was, in fact, inevitable. There were many disputes over the politics, economics, and culture of slavery both in the White House and in the Supreme Court. The South was very persistent about wanting to keep slavery and they even wanted it to spread in to the North. The North disagreed completely however and wanted it to just be completely abolished throughout all of America.…