Michael ShorrockThe chemistry of PhotographySummary:Joseph-Nicephore Niepce took he word's first photographs in 1824. Many people don't know that he was the person who invented photography; they think that a Frenchman named Daguerre was the inventor but he got the idea from Niepce. Jacqueline Bell...

Respiration is the process by which oxygen is delivered to cells and body systems for use. It consists of levels, several of which are breathing, internal respiration, and external respiration. Breathing is the process by which air is inhaled and exhaled through the mouth. External respiration is th...

A Vogadro was born on June 9, 1776 in Turin, Italy. He began his career in 1796 by obtaining a doctorate in law and practicing as a lawyer for three years after. In 1800, he began to take private lessons in mathematics and physics and decided to make the natural sciences his profession. He was appoi...

The conclusion of a manuscript located at the Bancroft Library at UC Berkeley, laid the words: "I have attempted to give you a glimpse...of what there may be of soul in chemistry. But it may have been in vain. Perchance the chemist is already damned and the guardian the blackest. But if the chemist...

Hello. My name is Dmitri Mendeleev. As you probably know I was the creator of the Periodic Table of the Elements. For those of you that don't know what that is, the table of elements is an arrangement of different chemicals that are arranged in Atomic Weight order. I also left space for 3 n...

Fausto de Elhuyar the man, the myth, the legend lived from 1775-1833. Elhuyar was no ordinary chemist. Along with being the co-discoverer of tungsten, he has written and published many of his works. He was the founder of the Royal school of mines in Mexico. Now that I've given you an overvi...

Chemistry Open Book Paper Atomic spectroscopy is a chemical analysis technique and it is used to identify what elements are in a compound. It uses the idea of a photon being absorbed or emitted whenever an electron changes from one energy level to another. The diagram below shows sodium sal...

Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the first to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist na...

Our understanding of the atom has changed remarkably over time. At one point, it was considered a solid object. Now, the atom is considered to have a cloud for its electrons. We believe that our notion of the atom has had many changes, and will continue to change until we get it right. The ...

Periodic Table In 1869, Dmitri Mendeleev arranged the known elements of the time into what we call the periodic table. Mendeleev recognized that elements placed in order of increasing atomic mass exhibit a regular, or periodic repetition of their chemical and physical properties. The modern p...

The History Behind The Atom Throughout the discovery of the atom, many scientists worked to formulate how the atom works. Which began in the early 1800's with John Dalton, to our current model of the electron cloud developed by Schrodinger. During this long process of the discovery the atom, took ...

Moving Object has wave like characteristics Particles really do have wave-like properties, it just took a while for us to notice them. It wasn't discovered until 1925 that electrons do have wave characteristics. An American physicist, Clinton Davisson, was working with Lester ...

John Dalton once made this famous quote on his work concerning the atom, " We might as well attempt to introduce a new planet into the solar system, or to annihilate one already in existence, as to create or destroy a particle of hydrogen." John Dalton was a British chemist and physicist,...

Personal Background Dmitri Mendeleev was the youngest of at least 14 children in his family. They lived in Tobolosk, Siberia. His father, Ivan, was the director of a gym and his mother, Marya, came from a family that introduced glass and paper making to Siberia. Mendeleev's father died while h...

Electron Pair Repulsion Theory: The electron pair repulsion theory states that the electron pairs in the valence energy level of an atom repel each other, and therefore are arranged as far apart as possible. For example, H2O:Due to this theory, different molecules with different amounts of pairs of...

Atomic Absorption Spectrophotometers An atomic absorption spectrophotometer consists of many complex and integral pieces. These components work together to help determine the concentrations of many different elements in various products to a very precise and accurate value. The instrumentation...

Quantim Mechanics is abranch of mathematical physics that deals with the emission and absorption of energy by matter and with the motion of material particles. Because it holds that energy and matter exist in tiny, discrete amounts, quantum mechanics is particularly applicable to Elamentry Pprticles...

Sir Marcus Laurence Elwin OliphantSteven Duncan594 wordsMarcus Laurence Elwin Oliphant, was the eldest of five sons, and was born in 1901 in Kent Town, near Adelaide, South Australia. His father was a civil servant and his mother was an artist. Oliphant was interested in a career in medicine or chem...

Ernest RutherfordErnest Rutherford was born in New Zealand in 1871 as one of 12 children. It was Rutherford who first "split" an atom and who discovered the atomic "nucleus", a name that he invented. For this he is regarded as the greatest experimental physicist of his time. Ruther...