Atom Essays

  • J. J Thomson, Comparison, Atoms, And The Atom

    707 Words  | 3 Pages

    THOMSON, MILLIKAN, CROOKES, AND THE ATOM J. J. Thomson was born in Cheetham Hill, Manchester, United Kingdom, December 18, 1856. Died August 30th, 1840, Cambridge, United Kingdom. 1870-Entered Owens College, Manchester 1876-Entered Trinity College, Cambridge 1880-Became a Fellow of Trinity College 1883-Became a Lecturer at the college, 1918-Became a master 1884-1918-Cavendish Professor of Experimental Physics at Cambridge, Honorary Professor of Physics 1884-Adams Prize Study of cathode rays culminated

  • Dalton's Theory On The Complexion Of The Atom

    1135 Words  | 5 Pages

    Time has passed since Dalton’s theory have been able to explain some complexion of the atom until 1897 when Joseph John Thomson discovered the electrons which has a huge impact of the existing atomic model of Dalton. From his cathode ray experiment, he learned and discussed about the existence of electrons. Cathode ray experiment explored on cathode ray tubes which are vacuum tubes that consist of one electrode one each side of the tube, altogether consisting of two electrodes, when one of the electrodes

  • John Dolton's Theory: The History Of The Atom

    776 Words  | 4 Pages

    The history of the atom The earliest recorded theory of the atom first came about when Greek philosopher Democritus, in 460AD thought about division of sand grains. He thought that substances could be broken down until they could no longer be made smaller, he called this particle the atomos and this is where the word atom comes from. John Dolton, in the 19th century, was the next person to develop the idea of the atom. His studies on gases he created five assumptions about atoms, some of which are

  • Advantages And Disadvantages Of Rutherford's Model Of Atom

    846 Words  | 4 Pages

    Introduction Atoms are the fundamental building blocks of matter. Atom is made up of smaller particles called sub atomic particles. Three main sub-atomic particles are electrons, protons, neutrons. 4.1 Charged particles in matter The existence of electron in an atom was shown by the scientist JJ Thompson on the basis of detailed study of cathode rays. The existence of positively charged particles in atom was shown by E Goldstein in the year 1886. He performed an experiment with discharge tube containing

  • Atom Longboard Analysis

    1728 Words  | 7 Pages

    Discover the Best Atom Longboards What's your hobby? Is it cycling, basketball or baseball? Are you looking for an even more electrifying experience? Then, you must try riding a longboard! It gained popularity much later than its existence, when several longboard brands initiated designing trendy boards. One such brand known for manufacturing some classy longboards is Atom. As Atom launched its first board in 2005, there was no looking back. Atom brings a wonderful combination of quality, resilience

  • Atom Strategic Strategy Summary

    1661 Words  | 7 Pages

    Atom Tactical strategy, successful Research and Development, and unity do not begin to describe the computer company Atom. Atom was able to overcome all obstacles they faced in the first two years of their company’s start up. They showed to be leaders with their high brand ratings and held 27% of market share in APAC. They used penetration pricing to attract customers and inelastic pricing helped them attain capital. They licensed with Swift and Caliche in order to achieve the highest amount of

  • Bohr's Atomic Model And The Electron Cloud Model

    1723 Words  | 7 Pages

    models constructed by scientists who have tried to figured out how an atom is made up and what exactly it is made up of but two of the best atomic models of the atom are Bohr’s atomic model and the Electron cloud model which were both made in the early 1900s . In 1913 the Danish physicist Niels Bohr had created Bohr’s atomic model showing the atom and how it was structured. Bohr’s atomic model was the first known model of an atom that incorporated the quantum theory and also was the predecessor for

  • Why Chemical Bonds Are Important

    765 Words  | 4 Pages

    Mariel Beauroyre 9-B A chemical bond is form with the joining of two or more atoms (when two atoms are joined they form molecules and compounds.) Which are being held together by the attraction (force attraction) of atoms through sharing as well as exchanging electrons. Chemical bonds are found in molecules, crystals, or in solid metals. They also organized the atoms in order structures. But why are they important you may ask? They’re important because every material or substance in the world

  • Sn2 Reaction Paper

    1108 Words  | 5 Pages

    Tertiary alkyl halides tend to give a mixture with both inverted and retained configurations at reaction centers. This is because this reaction proceeds through a stable carbocation intermediate and the carbon at the reaction center goes to sp2 hybridized state (planar geometry). The incoming nucleophile can attack from both sides of the plane and can give two products with retained and inverted configuration. If there is a partial interaction with the leaving group (nucleofuge) with carbocation

  • Chemistry: An Introduction To Stoichiometry

    1709 Words  | 7 Pages

    change in composition it undergoes. Now, along the long line of the history of chemistry, scientists have used symbols, formulas, and equations to indicate the elements present, the relative amounts of elements, and the variety of combinations of atoms during a chemical change. As a bonus, you can also find out how much product will be formed or how much reactant is needed, based on the masses of the substances involved. The science that deals with the manipulation of said variables is called Stoichiometry

  • John Rutherford's Contribution To The Atomic Theory

    838 Words  | 4 Pages

    of an atom 's weight and protons define what type of element an atom is. His discovery of alpha and beta rays are important to chemistry because that is the foundation of radioactive decay. Before we begin, here is some background on the atomic theory. In 400 B.C. Democritus claimed that atoms are a single material formed into varied shapes and sizes. John Dalton found that atoms of different elements are different and ones of the same

  • Advantages And Disadvantages Of Chemical Bonds

    1642 Words  | 7 Pages

    two or more atoms either from the same type or different, these atoms are joined with chemical bonds which is a result of either sharing or exchanging electrons. √ There are four main types of chemical bonds by joins molecules together: ionic bonds, covalent bonds, polar bonds as well as hydrogen bonds. Ionic bonds involve the transfer of one electron from one atom to another giving rise to a positive atom (Cation) and the gaining atom becoming negative (Anion). For example, a sodium atom giving an

  • Essay On Atomic Absorption Spectrometry

    1579 Words  | 7 Pages

    They correlate to the energies desired to promote electrons from one energy level to another, higher, energy level. Working: Atoms of different elements consume characteristic wavelengths of light. Analyzing a sample to know if it contains a particular element means using light from that element. For example with lead, a lamp containing lead emits light from excited lead atoms that yield the right mix of wavelengths to be absorbed

  • Metal Bonding Trends Essay

    1485 Words  | 6 Pages

    of atomic orbitol. The free electrons present in the atoms are going to excited and leaves the atom core. As a result the free electron present stays on the surface of the metal but is no longer in the vicinity of the atom from which it was excited. In other words the electron becomes delocalized as it is no longer in the control of the atom. But even though the electron is excited there will also be interaction between the ion ( As the atom loses electron) and the free electron. This microscopic

  • The Zeeman Effect

    1847 Words  | 8 Pages

    It is a known fact that atoms have quantised energies, that is, they can only have a discrete set of energy values. When irradiated by electromagnetic radiation, atoms absorb certain frequencies from the radiation thus transitioning between energy levels. If the incident radiation is compared with the one coming from the atoms, a continuous spectrum can be observed with frequencies matching those between the energy levels missing. The spectrum is unique to the element and displays the fact that the

  • Chemical Bonding In Metals

    865 Words  | 4 Pages

    Shadi Salem Bonding in Metals Bonding in metals, also known as, metallic bonding is a chemical bond between a metallic element’s atoms, which forms when its valence electrons move freely through the material. It is the sharing of positively charged ions. This chemical bond is what holds the metal’s atoms together and in place. Along the creation of quantum mechanics, metallic bonds were given more formal interpretation through the free electron model and its extension, the nearly free electron

  • Electrons In Metals Lab Report

    842 Words  | 4 Pages

    energy state, making it easy for metallic bonding to occur. They are usually made of closely packed atoms, which mean the outer electron of each atom can overlap with surrounding atoms. This means the electron can move from one atom to another, as neither atom have a full outer shell. These electrons are referred to as delocalized, or free, electrons due to their ability to move freely between atoms. The atom that the electron leaves becomes a positive ion , embedded in a sea of delocalized electrons.

  • Essay On Sputtering

    794 Words  | 4 Pages

    When an ion impinges on a solid, it can transfer energy to the solid via collision with the atoms (“nuclear stopping”) or excitation of the electrons (“electronic stopping”). This can enable constituents of the solid to overcome their binding energy and propagate away from the surface. This process is called “sputtering.” Two different sputtering regimes are distinguished, depending on which the energy loss channel is prevalent. At low (keV) kinetic energies, the primary ion interacts with the solid

  • Nuclear Energy: How Is Nuclear Energy Created?

    1785 Words  | 8 Pages

    occur in the separation of atoms larger than Iron or combining atoms smaller than Iron. The slight amount of mass that is lost from either the separation or combination follows the Einstein’s mass energy relation E=mc2 where m is defined as the mass and c is the speed of light. How is Nuclear Energy Created? Nuclear energy is created either from the Fusion or Fission of atoms. Nuclear fusion is the joining of two small atoms such as Hydrogen or Helium to produce heavier atoms. This reaction can release

  • The Pros And Cons Of Organic And Inorganic Chemistry

    1064 Words  | 5 Pages

    two studied in this lab are the SN1 and SN2 reactions. In a nucleophilic substitution, the nucleophile is a electron rich chemical species which attacks the positive charge of an atom to replace a leaving group. Since nucleophiles donate electrons, they are defined as Lewis bases. The positive or partially positive atom is referred to as an electrophile. The whole molecule which the electrophile and the leaving group are part of is called the substrate. The most general form of the reaction is represented