Page 1 of 26 - About 256 Essays
  • Alchemists Chemical Reaction

    unit, or amu. Many elements have multiple isotopes, or versions of atoms, which have the same atomic numbers, but a different atomic mass which changes according to the amount of neutrons in the nucleus. By 1911, the constituents of atoms have been discovered to be known as electrons, protons, and neutrons, but what remain undiscovered was how they were arranged. J.J. Thompson theorized that electrons and protons were evenly distributed in the atom which he called the “Plum Pudding” Model. However, Rutherford tested out the theory by shooting Helium particles at a thin foil of gold atoms. The majority of the particles passed through, but some bounced back, meaning the atom was mostly empty space and therefore disproved the “Plum Pudding” Model. Rutherford came to the conclusion that electrons, which have a mass of almost 0.0005 amu, move around a nucleus in the center, which are made up of protons and neutrons with a mass of about 1 amu each. Common metals such as copper cannot go through radioactive decay because the isotopes needed to accomplish the process do not exist. Radioactive decay is an unprompted transformation of a nuclide into one or more nuclides done by the emission of or combining with particles in the nucleus. In order for this to happen, an unstable isotope of an element must be present. Alpha decay occurs by ejecting a Helium atom, 24He, composed of 2 protons and 2 neutrons from the nucleus of the radioactive isotope. This decreases the atomic number by 2…

    Words: 1413 - Pages: 6
  • Cl-36 Dating

    This region is characterized by a steep increase of the annual rainfall (summer rains from July to September) from 150 mm/year at their northern margin to more than 350 mm/year at the southern margin. Groundwater samples were collected by Gröning et al., (1993) and analyzed for H and O isotopes in both areas. Darfur has δ18O, which varies between -10.99 and 4.73‰, while δD ranges between -81.7 and 42‰; Kordofan has δ18O, which varies between -11.26 and 14.57‰, while δD ranges between -80.5 and…

    Words: 1077 - Pages: 4
  • Isotope Lab Report Essay

    ISOTOPE EXPERIMENT- BEANIUM Introduction This beanium experiment was performed to display a greater understanding of isotopes of an element. Atoms that belong to the same element with the same number of protons but differ in numbers of neutrons are called isotopes. Since the atomic mass of a element includes the sum of the number of protons and neutrons in the nucleus of the element, It can be said that isotopes would have a different mass. Heavier isotopes tend to react more slowly than…

    Words: 713 - Pages: 3
  • Methods Of Dating Essay

    Scientists and anthropologists work together to date objects found in their archeological digging, many being millions of years old. Various methods of dating are available, depending on what they are trying to date. In this essay, the techniques of dating objects will be explored and compared. Each method has its advantages and disadvantages, but all extremely complex and scientific, each with its own purpose. The methods that will be discussed will be Radio Carbon Dating, Relative Dating,…

    Words: 954 - Pages: 4
  • Negative Effects Of Carbon 14 Isotope

    An Isotope is an atom of an element which has a different number of neutrons and different mass number but the same proton number. The isotope that will be focused in the essay is carbon 14 isotope. Carbon is found in all living things and is the building block for organic material, there is carbon 12, 13 and 14 and they all have different properties. This isotope was discovered on February 27, 1940 by Martin Karmen and Sam Ruben and is the most radioactive out of all carbon isotopes. The…

    Words: 1020 - Pages: 5
  • Dialogue Essay: New Isotope Ice-Nine

    He called this isotope ice-nine. It became solid at room temperature. If the seed was then dropped into mud, it would crystallize and then the mud would solidify. John frightfully asked what would happen if this isotope was made and dropped into the mud. Dr. Breed, getting more angry, told John that the mud would freeze. However, the ice-nine would set off a sort of chain reaction, causing the rest of the water on the earth to freeze as well. John asked if Felix had actually created some type of…

    Words: 449 - Pages: 2
  • Tyrannosaurus Rex Hypothesis

    form annual growth rings- bones also have yearly indicators of growth. By comparing the oxygen isotope levels of each year indicator of the bone with isotopes of the surrounding areas we can see where the Tyrannosaurus rex may have traveled to throughout its life cycle. Assuming the oxygen isotope levels can be calculated for the areas of Interest, the bulk of our grant would be spent cutting the oxygen isotope levels from existing fossils. Using USGS maps we can pinpoint locations of…

    Words: 435 - Pages: 2
  • Radioisotopes Research Paper

    Radioisotopes are atoms that consist of unstable combination of neutrons and protons. All elements which have their atomic numbers greater than 83 are radioisotopes and have unstable, radioactive nuclei. They have at least one stable isotope and one unstable isotope. In order to gain stable conformation the nucleus of the atoms loses a neutron due to which radiation energy is given off and the atom is said to be in radioactive state. They are also called as radionuclides because they have more…

    Words: 1456 - Pages: 6
  • Helium Research Paper

    They are the most common two out of the nine isotopes that Helium has. Isotopes are two or more forms of the same element. An isotope contains equal numbers of protons but have a different number of neutrons in their nuclei. Hence, isotopes differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element. Many elements only have one stable element. The main isotope of Helium is 3He. 3He (He-3) is a light, non-reactive isotope. It has two protons and…

    Words: 595 - Pages: 3
  • Analysis Of Kandimonium Lab Report

    Introduction The goal of this experiment was to determine atomic weight of Kandimonium and the relative number of M&M’s in Kandimonium. Kandimonim is composed of three isotopes: Skittles, M&M’s, and Sweet Tarts, and the ratio of Sweet Tarts to Skittles is 27:18. The relative number of M&M’s and the atomic mass were determined by weighing each of the different Isotopes and calculating their average masses for further calculations. Calculations The following calculations were used to…

    Words: 649 - Pages: 3
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