Atomic Mass

Page 1 of 50 - About 500 essays
  • Atomic Mass

    350 Words  | 2 Pages

    material. Most of the particles passed through the foil undisturbed, suggesting that the foil was made up mostly of empty space rather than of a sheet of solid atoms. Some alpha particles, however, "bounced back," indicating the presence of solid matter. Atomic particles, Rutherford's work showed, consisted primarily of empty space surrounding a well-defined central core called a nucleus. The game portrays the marbles as the alpha beams that bounce off the foam cores. The foam cores represent the nucleus

  • An Investigation into the Atomic Mass of Lithium

    912 Words  | 4 Pages

    An Investigation into the Atomic Mass of Lithium There are two methods that can be used to determine the atomic mass of a Group 1 metal. These are best described by the reactions that take place during these methods. Method 1: 2Li(s) + 2H20(l) è 2LiOH(aq) + H2 (g) For the first reaction, the equipment must be set up as detailed in the attached sheet. A mass of lithium must be taken and weighed, the results recorded. This mass is then to be added to the test tube, and the bung replaced

  • Determination of Relative Atomic Mass of Lithium

    728 Words  | 3 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

  • Investigating the Relative Atomic Mass of Lithium

    1351 Words  | 6 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 hydroxide produced. To

  • Determination of the Relative Atomic Mass of Calcium

    986 Words  | 4 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 =

  • Determining the Relative Atomic Mass of Lithium

    571 Words  | 3 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 to Determine the Relative Atomic Mass of Lithium

    1715 Words  | 7 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

  • Atomic Structure, Moles and Periodicity

    1193 Words  | 5 Pages

    Atomic structure, Moles and Periodicity The Periodic Table is guidance or map to access different elements specific information, such as: atomic mass, isotopic richness, nuclear spins, electronic configuration and the position of elements belong to which group and period in table. Over the past decades there were many Scientifics which help to improvement of Periodic table but few of them made the most influence and contribution on Periodic table such as : Johann Dobereiner ,John Newlands ,

  • The Structure of the Atom

    2154 Words  | 9 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

  • Copper

    543 Words  | 3 Pages

    and they, along with protons, are the majority of mass in an atom. Electron mass, though, is negligible. When an atom has a neutral charge, it is stable. Isotopes refer to 1 of 2 or more atoms with the same atomic number but different numbers of neutrons. The atom copper has two stable isotopes. They are 63Cu and 65Cu. 63Cu has an isotope atomic mass (in amu) of 62.9295989 and a natural abundance (in atom %) of 69.17. 65Cu has an isotope atomic mass (in amu) of 64.9277929 and a natural abundance (in

Previous
Page12345678950