Atomic Mass Essays

  • Investigation to Determine the Relative Atomic Mass of Lithium

    1715 Words  | 4 Pages

    Investigation to Determine the Relative Atomic Mass of Lithium Introduction My aim of this experiment will be to determine the R.A.M using two separate methods In the first method I will dissolve a piece of lithium of a known mass in water, I will then collect the hydrogen gas produced, which can be used to calculate the relative atomic mass of Lithium. The balanced equation of our reaction is shown below; [IMAGE]2Li + 2H2O 2LiOH + H2 In the second method I will do a titration

  • Determination of the Relative Atomic Mass of Calcium

    986 Words  | 2 Pages

    Determination of the Relative Atomic Mass of Calcium In this experiment, I will determine the relative atomic mass of calcium by two different methods. v By measuring the volume of hydrogen produced. v By titrating the lithium hydroxide produced. Method 1 -------- [IMAGE] v 0.10g of calcium used. v 100cm3 of distilled water used. Results Method 1 Mass of Calcium (g) Total volume of gas produced (cm3) 0.10 37 v Starting point of water in cylinder =

  • Determination of Relative Atomic Mass of Lithium

    728 Words  | 2 Pages

    Determination of Relative Atomic Mass of Lithium Evaluation: In general the accuracy of the experiments was good. However with practice, the accuracy could be improved; accuracy being how close the results are to the real answer. I think I have carried pit the experiment as well as I possibly could at the time with the given conditions and time period allowed. I have gained precise results from the practical. However, looking back at the analysis section, the relative atomic mass values I found

  • Determining the Relative Atomic Mass of Lithium

    571 Words  | 2 Pages

    Determining the Relative Atomic Mass of Lithium An experiment has been carried out to determine the relative atomic mass of Lithium by using two different types of methods The first method that was carried out was to determine the volume of Hydrogen produced. In this experiment a fixed amount of Lithium was used, in my case it was 0.11g. At the end of this experiment, the volume of Hydrogen gas I collected was 185cm³. Then using the solution of lithium hydroxide made from experiment

  • Investigation of Positively and Negatively Charged Electrons

    558 Words  | 2 Pages

    to the cathode, the mass of the anode to the cathode, the mass of the anode decreases whilst the mass of the cathode increases. I can support the point I've made above by faradays law which is: Faraday's Second Law of electrolysis states that: "The mass of an element deposited by one Faraday of electricity is equal to the atomic mass in grams of the element divided by the number of electrons required to discharge one ion of the element." Hypothesis: The mass of the anode should

  • Copper

    1063 Words  | 3 Pages

    Copper has many chemical properties that make it unique. The Atomic number of copper is 29. An Atomic number is a measure of the amount of protons in the nucleus of an atom. Protons are sub-atomic particles, which have a positive charge. The Atomic mass of copper is 63.546. The Atomic mass is a measure of how many neutrons and protons are in an atom. Neutrons are sub- atomic particles, which have no charge. Thus, using the Atomic mass and Atomic number of Copper, we can determine that it has 29 proton

  • Gold

    785 Words  | 2 Pages

    heavy, soft metal. It weighs nearly twice as much as lead. Shiny and deep yellow in color, gold is one of two metals, which are not gray or white when pure. Gold is the most ductile of metals. Properties of gold are: ? Symbol - Au ? Atomic Number – 79 ? Atomic Weight – 196.967 ? Electron Configuration - -32-18-1 ? Group in Periodic Table – 1B ? Density at 68 F – 19.3 g/cm^3 ? Boiling Point – 5,370.8 F ? Melting Point – 1,945.4 F ? Number of Protons/Electrons –

  • Properties of Hydrogen

    826 Words  | 2 Pages

    hydrogen is composed of one proton. Deuterium, present in ordinary hydrogen to the extent of 0.02 percent, contains one proton and one neutron in the nucleus of each atom and has an atomic mass of two. Tritium , an unstable, radioactive isotope, contains one proton and two neutrons in the nucleus of each atom, and has an atomic mass of three. Both deuterium and tritium are essential components of nuclear fusion weapons, or hydrogen bombs. Free hydrogen is found only in very small traces in the atmosphere

  • Plasma: The Power of the Sun

    1994 Words  | 4 Pages

    atoms of low mass, which are initially attracted to each other, to form one atom of greater mass. When two atoms combine to form a single atom, they have fused. This fusing releases a large amount of energy with respect to the amount of mass and energy that was initially put into the reaction. This combination releases energy in the form of light and heat. Energy is created in a fusion reaction through the loss of atomic mass from the beginning to the end of the reaction. The mass of the two atoms

  • Xenon

    623 Words  | 2 Pages

    Xenon Xenon is element number 54 on the periodic table of the elements. It has a mass of roughly 131 atomic mass units. There are 77 neutrons and 54 protons in the nucleus of the atom. The symbol for xenon is Xe and it belongs to the family of elements called the noble gases. It is called a noble gas because the valance shell of one atom contains a full shell. Xenon is one of the most stable elements on the table. The 54 electrons are arranged, so that there are 2 in the 1st shell, 8 in the 2nd

  • Chlorine

    521 Words  | 2 Pages

    Chlorine Chlorine is (at room temperature) a greenish-yellow gas that can be readily liquefied at 5170 Tarr or 6.8 atmospheres, at 20 C (68 F), and has a very disagreeable odor. It’s Element Symbol is Cl, atomic number is 17, and atomic mass is 35.453. Chlorine’s melting point is -101 C or 149.8 F. The boiling point is -34.05 C or -29.29 F, at one atmosphere pressure. Chlorine is a member of the halogen group. Chlorine was discovered by Swedish scientist Karl Wilhelm in 1784, but he first thought

  • neon

    889 Words  | 2 Pages

    (figure B). Neon is also used in High voltage indicators (figure C) and neon-helium laser pointers (figure D). Now I?m going to give you the chemical breakdown of neon. Neon?s atomic number is #10. Neon has 10 protons, 10 neutrons, and 10 electrons. It belongs to the Noble Gas section of the periodic table. Its atomic mass is 20.1797. All the noble gases have the maximum number of electrons possible in their outer shell making them stable and un...

  • The History And Characteristics Of Indium (In)

    807 Words  | 2 Pages

    zinc ore samples. An indigo line in the samples spectrum was found, and no element known had this colour in them it revealed the existence of a new element which was called Indium due to the bright coloured line in its spectrum. Characteristics Atomic Mass: 114.818 Melting Point: 429.75 K (156.60 C) Boiling Point: 2345 K (2072 C) Density: 7.31 grams per cubic centimetre State at Room Temperature: Solid Element Classification: Metal Period Number: 5 Group Number: 13 Occurrence In Nature Indium is

  • Lithium Lab Report Essay

    1351 Words  | 3 Pages

    Investigating the Relative Atomic Mass of Lithium Background information I’m going to produce a piece of coursework, which determine the relative atomic mass of lithium. Two methods are going to be used to approximate the relative atomic mass of lithium. 1) In the first method the RAM (Relative atomic mass) of lithium is determined by the Volume of hydrogen gas produced. 2) In the second method the RAM of lithium is determined by titrating the lithium

  • Chemistry: Percent Composition Lab Introduction

    1206 Words  | 3 Pages

    the percent of the total mass of a compound that an element takes up (Texas A&M University, "Chemistry"). To calculate the percent composition of element of a compound, the molar mass of the compound must be found by adding up the masses of each atom in the compound (Texas A&M University, "Chemistry"). This can be done by using a periodic table. Then the mass of the element must be calculated by adding up the mass of its atoms (Texas A&M University, "Chemistry"). Then the mass of the element must be

  • The Structure of the Atom

    2154 Words  | 5 Pages

    [IMAGE] Basic Atomic Particles : Atoms are made up of the following particles : Protons : Protons are positively charged particles with a mass of one atomic mass unit. They are found in the nucleus at the centre of the atom structure. Neutrons : Neutrons are not charged and have a mass of one atomic mass unit. They are found, with protons at the centre of the atom. Electrons : Electrons are negatively charged particles with a mass of 1/1846th of an atomic mass unit. They are arranged

  • Investigation of the Thermal Decomposition of Copper Carbonate

    1434 Words  | 3 Pages

    Investigation of the Thermal Decomposition of Copper Carbonate Aim: Copper has two oxides, Cu2O, and CuO. Copper carbonate, CuCO3 decomposes on heating to form one of these oxides and an equation can be written for each possible reaction Equation 1: 2CuCO3 (s) Cu2O (s) + 2CO2 (g) + O2 (g) Equation 2: CuCO3 (s) CuO (s) + CO2 (g) The aim of this experiment is to prove which equation is correct. This can be done by volumetric analysis i.e. calculating the volume of gas produced. This is then

  • Empirical Formula Lab

    1001 Words  | 3 Pages

    complete this lab, a basic understanding of mass, moles, and empirical formula is required. Mass is a unit of measurement that is used to determine the number of grams in a certain object. A mole is a measurement in which the amount of substance that is present can be determined.To convert between from mass to moles the amount of grams present is divided by the atomic mass to find moles. To get back to mass from mols the amount of mols is multiplied by the atomic mass. An empirical formula is a chemical

  • Theory of Graviton Fields

    3777 Words  | 8 Pages

    paper examines the possibility that atomic structures exists as complete self sustaining entities in identical form throughout the Universe, without any form of external input. The paper examines the energy budget of an atomic structure and concludes that gravitational attraction forms an inherent function of the structure in the form of low level quanta ejected from the structure as the final spent particle. It is postulated that all so far identified sub atomic particles are sourced from a single

  • Chemistry

    750 Words  | 2 Pages

    equation is correct. I have used the book Chemistry 1 by OCR as my reference. Relative Atomic Mass: This is the mass of an atom of the element relative to the mass of an atom of carbon-12 which has a mass of exactly 12. Relative Molecular Mass: This is the mass of a molecule of a compound relative to an atom of carbon-12. Mole: This is the unit of an atom of substance. One mole of a substance is the mass that has the same number of particles (Molecules, Ions or Electrons) as there are atoms