Guide: Chemistry 2045. Exam 1 Ch. 1-6Chapter 1: Keys to the study of Chemistry1.1 Fundamental definitions· Chemistry: The study of matter and its properties, the changes that matter undergoes, and the energy associated with those changes.· Matter: Anything that has mass and volume, inertia, and ...

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...

The Greek concept of atomos: the atom Around 440 BC leucippus of Miletus originated the atom concept. He and his pupil, Democritus of abdera refined it for future use. Their atomic idea has five major points. All original writings of leucippus and Democritus are lost. The only sources we have f...

On first discovery of; Heisenberg's Uncertainty Principle, one might be tempted to see it as applicable to the world. Of abstract, as well as abstract scientific research in some ivy covered campus of some high tech partial accelerator laboratory, here were one may conjure up mad scientific blowin...

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 ...

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 ...

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...

Chemistry A Final Review Introduction Atoms make up everything around us from the air we breathe to food we eat and even the stars in the sky. The average layman does not know much about the atom but in this paper I will explain what and why they are. A Brief History The word atom come...

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...