Neutron activation analysis

“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…

Eureka! Do you remember that pleasant feeling when a brilliant idea flashed into your head? Over 2000 years ago in ancient Greece, a physicist Archimedes was trying to solve a problem of physics. One day, while taking a bath, he suddenly got an inspiration, and discovered a breakthrough principle. He got so excited about this discovery that he leapt out the bathtub, ran through the streets without his clothes, and cried out, "Eureka!”: in English, “I’ve found it!”, the word to express our…

The purpose of this paper is to find out what material is the gold crown ring made out of. What is interesting about this topic is that there is a lot of ways to study the gold crown ring. For example, you can test the mass, volume, and density of the ring. In the periodic table Au is the symbol for Gold, it’s atomic number is 79. The Properties of Matter are Mass, Weight, Volume, and Length. Each property has its own way of working with different types of things. It is believed that the…

as deuterium and tritium – basically, hydrogen with extra neutrons) fuse to form helium, and the mass defect is released as energy." To define nuclear fusion and fission more clearly, fusion is the process in which two or more nuclei combine which forms a newer, more stable element, with a higher atomic number. Nuclear fission, on the other hand, is the “splitting of a nucleus into smaller fragments, accompanied by the release of neutrons…” For example, uranium-235 and plutonium-239 are…

Atoms What is so tiny that you cannot see with the naked eye, but despite their size are extremely important? Atoms are! Atoms are so important. Atoms are the building blocks of the world. They are in everything. Millions of little atoms join together to create the world and everything in it. They can also be used for other purposes not naturally, such as an atomic bomb. Atoms are critical to our survival at a whole. The history of the atom dates back to ancient times. Ancient…