Neutron star

From the times of the ancient Greeks to modern day, scientist have argued the concepts behind matter. During the time of Aristotle, philosophers created scientific theories based on logic alone, eliminating all scientific evidence. This is when Democritus proposed his theory. Later, Dalton proposed his theory after completing experiments about matter. Democritus's theory was the theory of atomos. He claimed that atomos were particles so small that they could no longer be divided. Democritus…

Alchemists used to obsess over chrysopoeia, the transmutation of regular metals, such as copper, into gold. However, they were not aware at the time that copper and gold were two different atomic elements and instead believed them to be compounds. Thinking these metals could be changed chemically or physically in labs, alchemists pursued this dream to no advantage. Although it is not possible to change ordinary metals to gold through chemical reactions, physical reactions, radioactive decay, or…

Within the first few decades of the 20th century, the science of physics was completely reformed with new understandings of the nature of atoms. In 1898 France, Paris, Pierre and his wife Marie Curie discovered a new substance within an ore of Uranium that they named radium that emitted large amounts of (as we now call) radioactivity. Ernest Rutherford and Frederick Soddy Identified that atoms can break down and turn into different elements. For example if a block of uranium were left alone for…

Theq element on the Periodic table that is best representation of my personality would be element 13, Aluminum. Properties of Aluminum its included high melting point, conductivity, malleability, and non-toxicity. Aluminum’s high melting point represents my determined personality. This is because I can face adversity well. Even when situations occur that are extremely unfavorable I am able to keep a cool head and think straight. I can persevere and stay strong allowing myself to solve and get…

“Matter, though divisible in an extreme degree, is nevertheless not infinitely divisible. That is, there must be some point beyond which we cannot go in the division of matter… I have chosen the word “atom” to signify these ultimate particles.” – John Dalton. John Dalton is a British chemist who was born in September 6, 1766 in Eaglesfield, England and died on July 26, 1844 in Manchester, England. At the age of 12, he started teaching at a Quaker school in Cumberland. Dalton worked as a farmhand…

Assignment: Chemistry of Magnesium and Silicon Magnesium Properties Magnesium is a group is a group 2 element with the symbol, Mg, an atomic number of 12 and has a molar mass of 24.31 [1]. It is made up of 12 protons, 12 neutrons, and 12 electrons. It’s electron configuration is 1s2,2s2,2p6,3s2 this given as noble gas configuration is [Ne]3s2. It has a melting point of 650 °C and a boiling point of 1090 °C [2]. It has a metallic radius of 150 pm, a coordination number of 72(6), and a density of…

One of my favorite philosophers in Sophie's World was Democritus. Democritus discovered atoms, tiny invisible blocks he thought that everything was made of; eternal and immutable. Democritus was also a materialist, someone who believes that nothing exists but physical matter. The philosopher, Alberto Knox, has asked Sophie “Why is Lego the most ingenious toy in the world?” The next day, he sends her a green packet talking about Democritus. Lego blocks are a great deal like atoms. Democritus…

WHAT IS NMR SPECTROCOPY? By definition, NMR spectroscopy is a research technique that makes use of the fact that certain atomic nuclei exhibit magnetic property to determine their chemical and physical properties for various uses that we’ll discuss later. History of NMR Spectroscopy Year Individual Discovery 1921 Stern and Gerlach Basis of quantum theory is confirmed by carrying out atomic and molecular beam experiments 1925 Ulhenbeck & Goudsmith Discovered the concept of spinning…

beanium experiment was performed to display a greater understanding of isotopes of an element. Atoms that belong to the same element with the same number of protons but differ in numbers of neutrons are called isotopes. Since the atomic mass of a element includes the sum of the number of protons and neutrons in the nucleus of the element, It can be said that isotopes would have a different mass. Heavier isotopes tend to react more slowly than lighter isotopes of the same element. Using the…

The city of Hiroshima is a modern day metropolitan area. The history of this city was a dark and dreary one. 70 years, this modernized city was devastated by an attack that went down in history. On August 6, 1945 the United States of America, dropped a bomb on the city of Hiroshima. “A device that harnesses the basic power of the universe.” This is how Truman described the atomic bomb. This was a machine that left a catastrophic effect on the people of Hiroshima. Even though there was…