Electric charge Essays

  • Jj Thomson Research Paper

    707 Words  | 3 Pages

    He proved the rays were negatively charged energy known as electrons. Cathode rays occur when electric current is driven through a containment where all gas has been pumped out. Ernest Rutherford, A student of JJ Thomson proved his plum pludding structure wrong. A series of experiments showed that alpha particles passed through gold foil, pointing

  • Electrons And Protons Essay

    918 Words  | 4 Pages

    Atoms are the building blocks which form every known structure and substance in the universe. They are made up of 3 subatomic particles called protons, neutrons and electrons. Protons have a positive charge, neutrons have no charge and electrons have a negative charge. Neutrons and protons are approximately similar in size as they both have an atomic mass of 1. His mass is relative to an element on the period table called carbon, which consists of an atom with 12 protons. Electrons however, are much

  • Atomic Theory Research Paper

    1675 Words  | 7 Pages

    were involved in shaping the atomic theory we know today in chemistry. Initiated by Democritus’s introduction to the concept of atom, Dalton proposal of the Atomic Theory, and Thomson proof of the existence of electrons. In addition, the mass and charge of electrons investigated by Millikan and the location of the nucleus and electron brought to attention by Rutherford. Finally, the neutron’s existence proven by Chadwick and the electron shells made known by Bohr. Similar to the modern atomic theory

  • Thomson Atomic Model

    1135 Words  | 5 Pages

    To clarify, he stated that the cathode rays had negative charge which is what is now called electrons. After wards, Thomson discovered the electrons, he created the “plum pudding model”, before the discovery of nucleus in 1904, which explained that the atom is composed of negatively charged “corpuscle” or electrons surrounded by the positively charge “soup” to balance out the negativity of the electrons. Or as referred to the name of the model, like negatively

  • Lithium Atomic Structure

    1751 Words  | 8 Pages

    “the same number of protons but different number of neutrons” (1) ) have 4 neutrons and fewer have 3 neutrons. The atoms of the isotopes of Lithium behave almost exactly the same way when doing chemistry, since the atoms electrons only care about the charge of the nucleus. The arrangement of electrons in an atom is known as its electronic configuration. How does an electronic configuration look like? It is commonly believed that the electrons move around the nucleus randomly in a three-dimensional pattern

  • Electrochemistry Lab Report

    1145 Words  | 5 Pages

    Electrochemistry is the study of reactions in which charged particles (ions or electrons) appear in two phases of matter, such as the metallic phase (the electrode) or aqueous phase (the electrolyte). (Lower 2004) These reactions involve the transfer of electric charges between the electrodes and the electrolyte. These cells have two electrodes which are named the anode and the cathode. The anode is the electrode where oxidation occurs and the cathode is the electrode where reduction occurs (Electrochemical

  • The Pros And Cons Of Organic Chemistry

    964 Words  | 4 Pages

    absorption and its conversion into charges. It is special because it doesn’t require intermolecular transportation of the excited electrons. Traditional solar cells have both light harvesting and charge transport occurring simultaneously. However, in case of DSC these are not together. This leads to certain limitations upon the properties of the semiconductor to be used. The band-gap and mobility of charge carriers as well as recombination time of photogenerated charges pose reduce the vastly available

  • John Dalton's Atomic Theory

    711 Words  | 3 Pages

    atomic volume, but contains almost all of the atom's mass. If an atom had the size of the earth, the nucleus would have the size of a football stadium.Not until 1919 did Rutherford finally identify the particles of the nucleus as discrete positive charges of matter. Using alpha particles as bullets, Rutherford knocked hydrogen nuclei out of atoms of six elements: boron (B), fluorine (F), sodium (Na), aluminum (Al), phosphorus (P) and nitrogen (N). He named them protons, from the Greek for 'first',

  • Helium Laser Lab Report

    2073 Words  | 9 Pages

    4. Basic operation of the Helium-Neon Laser. 4.1. How to Make Helium-Neon Laser. The goal of this experiment is to know how to make a simple Helium & Neon LASER So we will need to three principal elements to make a laser :- (1) Energy pump. (2) Optical gain medium. (3) Optical resonator. Now we must know the role of every element in this experiment Energy pump: A 1400-V DC power supply maintains a glow discharge or plasma in a glass tube containing an optimal mixture (typically 5:1 to 7:1)

  • Law Of Conservation Of Mass Essay

    1225 Words  | 5 Pages

    ADI Lab Investigation - Law of Conservation of Mass The Law of Conservation of Mass states that mass is neither created nor destroyed. The law also states, that the mass of the reactants are equal to the mass of the products in a chemical reaction. Matter is composed of atoms, and atoms can be bonded to form different types of molecules. In a chemical reaction, no new atoms are created, and no atoms are destroyed. Also, in a chemical reaction, bonds between atoms in the reactants are broken, and

  • Task 1. Explain How A Capacitor Is Constructed?

    791 Words  | 4 Pages

    imagine a capacitor being a sandwich, two metal plate (electric) that sandwich the dielectric acting as an insulator keeping the two metal plates from touching each other. The dielectric can be made from many different materials like silicon, silicon nitride, aluminium oxide and zirconium oxide to name a few, they all have different values and properties. Which is used depends on the purpose of the capacitor and type of capacitor. The electric surface area of the metal plates that determine the capacitors

  • The Importance Of Chemistry

    910 Words  | 4 Pages

    Chemistry is the branch of science that deals with the composition, structure and changes in matter. You are a product of chemistry, apparently, everything is! From the tiniest grain of sand to the heavenly bodies in the universe, the stars, the planets, they are products of chemistry, can you even envision a world without chemistry? Of course, you can’t, your mind is a product of chemistry too! It is also used in daily human activities, such as cooking. But even though I have stated some its uses

  • Copper Atom Research Paper

    1651 Words  | 7 Pages

    Copper is essential for all life, but only in small quantities. Copper appears in the periodic table at the top of Group 11 in the 4th period above silver and gold. Copper is one of the most important metals. Specifically, it is a transition metal on the periodic table. Copper is reddish with a bright metallic lustre. It is malleable, ductile, and a good conductor of heat and electricity (second only to silver in electrical conductivity). Its alloys, brass and bronze, are very important. However

  • Radio City Mural Analysis

    800 Words  | 4 Pages

    The mural on the radio city had a central section that showed a large hand holding a sphere emerging from an ambiguous machine (Linsey 50). These features explore the major theme of the art that of the interrelationship between the biological and the physical world (Linsey 50). The mural also depicts a clear bolt of lightning being captured by electrical equipment. These images have a common source in mass culture history, that of real scientific experiments (Linsey 50). The features in the mural

  • Tetrahedral Distortion Lab Report

    1010 Words  | 5 Pages

    Tetrahedral distortion is defined as the change in both the distance of bond and angle of bond are present. The degree of distortion with respect to the beta phase can be related to the tetrahedral tilt angle and the intertetrahedral bridging angle. While for tetrahedral tilting, there is only change in the angle of the bond and no change in bond distance. When there is an increase in temperature, the Fe-O-P bridging angles increases and the tetrahedral tilt angles decreases. As the temperature increases

  • Advantages And Disadvantages Of Radiopharmaceuticals

    784 Words  | 4 Pages

    Isotopes are atoms that contain the same number of protons but have different numbers of neutrons (What is Isotope). These isotopes contain similar chemical properties but have different physical properties due to their atomic mass. Or in other words, isotopes have the same atomic number but differ in mass (What is an Isotope). “There are 90 naturally occurring elements with roughly 250 stable isotopes, and over 3200 unstable or radioactive isotopes” (Why are Isotopes Important). A stable isotope

  • Electrons In Metals Lab Report

    842 Words  | 4 Pages

    Electrons in Metals Fallyn Walker 14423422 An electron is a negatively charged, sub atomic particle. It is a fermion, a particle named after the Fermi-Dirac statistics, which describes the electrons behaviour . Bohr proposed that the electron could move from orbitals. This could explain the spectrum for hydrogen but failed for other elements. The electron has a half integer spin, which leads to intrinsic angular momentum, a feature that all fermions possess. Pauli’s Exclusion principle states that

  • Cup 6 Lab Report

    482 Words  | 2 Pages

    Prove if the material in cup 6 is a metal, metalloid, or nonmetal, by using its appearance, color, state of matter, luster, conductivity, malleability, and how it reacts with HCL. Before beginning to test on the substance we observed its appearance, state of matter, luster, and color. The substance was very shiny, solid and hard, as well as silver. Then we put on safety goggles to start testing. The first test we conducted was the electricity test to see if the object was a good conductor of electricity

  • Nt1310 Lab 6

    575 Words  | 3 Pages

    Question # 1: Part A How many electrons and protons in an atom of vanadium? Answer # 1: Atomic number = number of protons = 23 Mass number = number of protons + neutrons Mass number = 51 g/mole Number of neutrons = 51-23 Number of Neutrons = 28 Number of electrons = atomic number = 23 Question # 1: Part B Explain in 2 or 3 sentences how the atomic weight is what is reported. Answer # 1: Atomic weight or atomic mass is basically the average mass of atoms of an element. Atomic mass is calculated

  • Atoms Dbq Research Paper

    297 Words  | 2 Pages

    the nucleus give off a negative charge. Electrons are a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids. Inside the dense nucleus, are protons and neutrons (Doc. 2). Protons are a stable subatomic particle with a positive charge that is the opposite of an electron and occurs in all atomic nuclei. Lastly is the neutron. It is a stable subatomic particle that has no charge and has nearly the same amount of