History of the periodic table

Uranium was first discovered in 1789 by Martin Klaproth. It was formed in supernovas about 6.6 billion years ago. Uranium is one of the heavier elements on the periodic table, being 18.7 times as dense as water. It is element number 92 and this specific isotope has 235 nucleons. This indicates to us that Uranium 235 has 92 protons, 92 electrons, and 143 neutrons. Uranium’s slow radioactive decay is the main source of heat inside the earth, causing convection and continental drift. Uranium 235…

The Solar System By Krishiv There is always something that you are pondering about. From the periodic table to the circulatory system. But did you know that the majority of people wonder about the Solar System? It is the final frontier, or the one thing that is not fully discovered. There are many unique masses in the Solar System. They range from planets like the earth to rocks such as asteroids, comets, and meteors. But one thing is for certain… every mass has to orbit the sun.…

some information about helium and its history Helium was first discovered in the sun and not the earth. In 1868, astronomer Pierre Janssen found this gas while watching the colors when the sun was going thru a full solar eclipse. Since the Greek word for sun is helios, he named the gas helium. It was not until 1895 that helium was discovered on earth by English physicist Sir William Ramsay. Helium is in the noble gas group in the periodic table. Even though it is a…

This is the line that should not be crossed, no person, for any non-fact based reason should be compelled to do anything by another person. Every religion throughout history is notorious for compelling the people within and without its influence to act, think, perceive in certain ways, through the use of force. In many parts of history, it is true, that the influence was based on merely the “way things were.” Meaning that so much of the populace had decided to act in a certain way due to their…

Doctors like titanum because of its properties that make it able to put in the human body. Titanium has many properties to allow it to be put in the human body. The human body is so sensitive that it only accept a few of the metals found on the periodic table of elements. Titanium is one of the only metals to be accepted by the human body without the body fighting it and creating an infection. Titanium also fuses with the existing bone creating a bond between the two. Because of these properties…

Development of the atomic theory throughout history Abstract This paper will explain many concepts of the atomic theory. It will also include very important information that involves 15 scientists and their contributions to the atomic theory. There are many different models that scientists constructed, that they believed atoms looked like. There are only 5 atomic models that have ever been accepted. Our perspective on the atom has changed throughout the years…

on the periodic table this chemical is called “Na” other people use that to make the Elephant Toothpaste. The call it Elephant Toothpaste because it’s supposed to look like toothpaste and since it's so big and it looks like toothpaste so the first thing people thought of was Elephant Toothpaste. Is that it was so deadly and that it would burn your skin off, then a scientist in Europe, discovered this amazing experiment. However, it did burn him the first time he tried this, however history of…

Denver International Airport (DEN) has been operational since February 28, 1995. Currently it is listed in the National Plan of Integrated Airport Systems (NPIAS) as a publicly owned, primary commercial service airport (“Denver International,” 2014). In 2014, Denver International experienced approximately 26 million enplanements, making it the sixth busiest large hub airport in the United States (“Commercial service,” 2015). Nearly 20 years after opening its doors, Denver International has…

In The Disappearing Spoon, Sam Kean explains chemistry broadly yet detailed through interesting and thrilling stories. He talks about the elements on the periodic table and how the table came into existence and why it is arranged the way it is. He also looks deeply into the history and concepts of some interesting elements. In chapter 15 called “An Element of Madness,” he goes into an explanation about selenium, manganese, palladium, barium, and unununium. Pathological science is considered…

Berylliosis is an occupational lung disease. It occurs in people who work with beryllium (beryllium is an element of the periodic table, is used to make things like airplanes, x-rays or nuclear reactors. It is found in coal in the ground.) And have the same allergic sensitivity. The workers are the most affected of all. It is the staff working in the nuclear sector. This cause is because the people inhale the air so the beryllium goes into the longs and they are affected. There are Pros and…