Atom

Atoms, ions, and isotopes are everything you eat, breathe and see. They are everywhere and everything is made up of them. The first person that aided in the discovery of the atom was Democritus in 400 BC. He is the one that named the atom. The word atom comes from the Greek word atomos which means indivisible. Aristotle which was another flossier in at that same time disagreed with him. He believed that matter could be divide infinitely without changing its properties. At that time more people…

consisted of atoms and atoms are indestructible. Aristotle, however did believe something could be divided forever and did not believe in atoms. With all this controversy, one would expect an atom model much earlier than it actually came in the early 1800s. Changes were made over the years, but the most recent one was about 85 years ago (Wysession, Frank, and Yancopoulos, 2011). Erwin Schrodinger, professor and physicist, and Werner Heisenberg, a professor, collaborated to make the newest atom…

research student at University of Cambridge’s Cavendish Laboratory in London. While at the Cavendish Lab, Rutherford worked with fellow scientist J.J. Thompson and studied the effects of X-Rays on the conductivity of gases and dividing atoms into molecules and atoms. While still at Cambridge, Rutherford focused on uranium and found that by placing it near…

Investigating Properties Lab Ishan Godra SCH4U Lab Partner(s): DeSean Lawrence Ms. Boulougouris 10/31/14 Purpose The purpose of this experiment is to analyze the properties of four different types of solids: ionic, polar covalent, non polar covalent, and metallic Hypothesis It is hypothesized the samples which are shown to be insoluble are likely non polar, while soluble samples are polar. Because of the molecular nature of each type of bond, it is hypothesized that polar…

hybridization state of the respective nitrogen atoms. The nitrogen atoms in pyrrole and pyridine are sp2 hybridized because they satisfy the following two conditions: 1) the atom has at least one lone pair of electrons and 2) the atom is connected to at least one sp2 hybridized atom. An sp2 hybridized atom has three sp2 hybrid orbitals and 1 unhybridized p-orbital. A hybrid orbital is used to form a bond while an unhybridized p-orbital…

particles called atoms, that atoms of the same element are all identical in mass and properties and cannot be created or destroyed, and that compounds are…

every time they were halved. This view held up for about 2,000 years. The next major change within the scientific field that concerned atoms was when John Dalton proposed his Atomic Theory in 1803. The atomic theory is, all matter is made up of atoms, atoms are indivisible and indestructible, and finally compounds are formed by two or more different kinds of atoms. J.J. Thomson, discovered that…

the properties it does is a subject called chemistry.” Chemistry involves many things, from atoms to elements and their functions. It is a wide field of science with an extensive early and modern history. It also involves chemical reactions, and what they are. Chemistry consists of many complex processes and objects. Some of the most important parts of chemistry are atoms, elements, and properties. Atoms are the particles that make up everything, from a chair…

and accurate understanding of the atom. Thanks to the evolution of atomic models. In the beginning, Democritus viewed the atom as a tiny, solid, round sphere, that was unable to be cut. He created the first model of an atom, that essentially depicted it as a solid sphere, free of electrons, protons, or neutrons that looks similar to a billiard ball. Next came Dalton, he believed that every element has its own specific atom. He also shared the belief that atoms could not be spilt,…

His model of the atom has been used for science for many years and been worked on to increase the complexity of it. Most of his work has been used as a simple base/referral for scientists to work on and edit, meaning without his discoveries, many things involving the atom would yet to be discovered or improved upon. Dewwit.T (2012). Discovery of the nucleus: Rutherfords gold foil experiment…