Isotope Essays & Research Papers

Best Isotope Essays

  • ISOTOPES - 703 Words
    Experiment #: 1 Date: September 18, 2013 Title: Isotopes of Paperclipium Purpose: To determine the isotopic composition of the element, paperclipium. Background Information: Isotopes are atoms of the same element with the same proton number but different mass number; that is, the number of neutrons differ. Isotopes of the same element have the same electronic configuration as they have the same number of electrons. This accounts for the fact that their chemical properties are the same, as...
    703 Words | 4 Pages
  • Radioactive Isotope - 588 Words
    STUDY GUIDE ANSWERS The Earth’s History Section 14-2 REVIEW VOCABULARY REVIEW radioactive isotope is an isotope whose nucleus tends to release particles, radiant energy, or both; radioactive dating is a technique for determining the age of a material by measuring the amount of a particular radioactive isotope the material contains. radioactive decay is the release of particles, radiant energy, or both by a radioactive isotope half-life is the time it takes for one-half of any...
    588 Words | 3 Pages
  • Stable Isotopes - 1094 Words
    Isotopes (Greek isos = "equal", tópos = "site, place") are any of the different types of atoms (nuclides) of the same chemical element, each having a different atomic mass (mass number).[1] Isotopes of an element have nuclei with the same number of protons (the same atomic number) but different numbers of neutrons. Therefore, isotopes have different mass numbers, which give the total number of nucleons, the number of protons plus neutrons. A nuclide is any particular atomic nucleus with a...
    1,094 Words | 3 Pages
  • Isotopes and Its Uses - 1874 Words
    ISOTOPES History of the term: In the bottom right corner of JJ Thomson's photographic plate are the separate impact marks for the two isotopes of neon: neon-20 and neon-22. The term isotope was coined in 1913 by Margaret Todd, a Scottish physician, during a conversation with Frederick Soddy (to whom she was distantly related by marriage).[4] Soddy, a chemist at Glasgow University, explained that it appeared from his investigations as if each position in the periodic table was occupied by...
    1,874 Words | 6 Pages
  • All Isotope Essays

  • Radioactive Isotopes - 632 Words
    Radioactive Isotopes Radioactive isotopes are any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays. Every chemical element has one or more radioactive isotopes. More than 1,000 radioactive isotopes of the various elements are known.. Approximately 50 of the isotopes are found in nature; the rest are produced artificially as the direct...
    632 Words | 2 Pages
  • Chemistry Isotopes - 1071 Words
    Ymbong, Eloise Donnabel D. CHEMISTRY TTh 4:30-6:00pm BFA-AA2 December 3, 2013 1. In any case, only one atomic mass can be an integer because of the difference in mass between a proton and neutron, and the fact that the sum of the particle masses for any isotope is not equal to the mass of the isotope. There are different isotopes of the elements. The atomic weight is the average based on the proportions that they occur in naturally. For example, hydrogen comes with a single proton,...
    1,071 Words | 3 Pages
  • atomic isotopes - 514 Words
    Atomic Dating Using Isotopes Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Dont forget to save your lab report to your computer Reference Isotope Half-Life Chart Isotope ProductHalf LifeCarbon-14Nitrogen-145730 years Potassium - 40Argon - 401,280 million yearsRubidium - 87Strontium -8 748,800 million yearsThorium - 232 Lead 20814,010 million yearsUranium - 235 Lead - 297704 million...
    514 Words | 2 Pages
  • Isotope Lab - 676 Words
    Fatima Bassett 9-25-14 ISOTOPES AND ATOMIC MASS In this experiment, you will perform the necessary calculations to determine the atomic mass of the fictitious element beanium. EXPERIMENTAL PROCEDURE Carry out the following steps, and record your results in Table 6.1 & 6.2. 1. READ THE INTRODUCTION AND PURPOSE BEFORE STARTING THIS EXPERIMENT! 2. Segregate your “isotopes” (beans) so that they are put in piles based on the type of bean. (Put all the black beans in one pile, all the red...
    676 Words | 5 Pages
  • Atomic Dating Using Isotopes
    Lab Report Lab Report Atomic Dating Using Isotopes Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Don’t forget to save your lab report to your computer! Reference: Isotope Half-Life Chart Isotope | Product | Half Life | Carbon-14 | Nitrogen-14 | 5730 years | Potassium - 40 | Argon - 40 | 1,280 million years | Rubidium - 87 | Strontium -8 7 | 48,800 million years |...
    555 Words | 3 Pages
  • Half Life of Radioactive Isotope
    July 8, 2013 The Half Life of a Radioisotope By Jeremiah Stoddard Abstract: The half-life of a radioisotope is the time required for half the atoms in a given sample to undergo radioactive, or nuclear, decay. Half-life is given the symbol t1/2.Different radioisotopes have different half-lives. The amount of radioactive isotope remaining can be calculated using the equation, ln [ (A)0 / (A) t1/2 ] = kt1/2 , or, rearranged: ln 2 = kt1/2. A sample data set was provided due to safety...
    560 Words | 3 Pages
  • post lab bean bag isotopes
    bEAN BAG ISOTOPES:ABUNDANCE AND ATOMIC MASS LAB By: Catriona Whalley Partner: Ming Siegel Due: 1.14.10 Prelab A new atomic theory, in which all atoms of the same element are identical to one another and equal in mass, was proposed by the scientist Dalton. Although the theory had its flaws and was simple, it was revolutionary. Scientists became able to study the actual structure and mass of atoms after the discovery of radioactivity. Soon, isotopes were discovered, as atoms of the same...
    1,188 Words | 5 Pages
  • Bean Bag Isotope: Abundance and Atomic Mass Lab
    BEAN BAG ISOTOPES:ABUNDANCE AND ATOMIC MASS LAB Prelab A new atomic theory, in which all atoms of the same element are identical to one another and equal in mass, was proposed by the scientist Dalton. Although the theory had its flaws and was simple, it was revolutionary. Scientists became able to study the actual structure and mass of atoms after the discovery of radioactivity. Soon, isotopes were discovered, as atoms of the same element which have been built up to have different masses....
    1,323 Words | 5 Pages
  • Isotopes, sub-atomic particles and relative atomic mass
    Isotopes, sub-atomic particles and relative atomic mass Sub-atomic particles A subatomic particle is a particle smaller than an atom: it may be elementary or composite. In 1905, Albert Einstein demonstrated the physical reality of the photons, hypothesized by Max Planck in 1900, in order to solve the problem of black body radiation in thermodynamics. In 1874, G. Johnstone Stoney postulated a minimum unit of electrical charge, for which he suggested the name electron in 1891. In 1897, J. J....
    985 Words | 3 Pages
  • Isotopes: Chemical Element and Element Symbol Atomic
    1- Look up the following elements and show their (atomic number, atomic mass, the symbol, number of electrons, protons and neutrons) the elements are Iron, copper, sodium, magnesium, chlorine, fluorine, carbon, hydrogen, oxygen. Element |Symbol |Atomic # |Mass # |#Protons |#Electrons |#Neutrons | |Iron |Fe |26 |26+26=52 |26 |26 |26 | |Copper |Cu |29 |29+29=58 |29 |29 |29 | |Sodium |Na |11 |11+11=22 |11 |11 |11 | |Magnesium |Mg |12 |12+12=24 |12 |12 |12 | |Chlorine |Ci |17 |17+17=34 |17 |17...
    274 Words | 1 Page
  • Radio Isotopic Dating - 603 Words
    Tony Mastropaolo Mr. Downs Chemistry 4321 8 April 2014 Radio Isotopic Dating An isotope is an atom of the same element with different number of neutrons. Sometimes the isotope is unstable which causes the isotope to change into a different atom over a certain period of time. By comparing the ratio of the original atom to the product that were in the beginning sample with the ratio of the products at the present time, scientists are able to determine the age of a substance. Radio isotopic...
    603 Words | 2 Pages
  • Zeebe Wolf Gladrow Chapter 3 Book
    141 Chapter 3 Stable Isotope Fractionation In 1913, Sir J.J. Thomson found that the element neon has two different kinds of atoms with atomic weights of 20 and 22, respectively. This was the first experimental proof of a hypothesis by F. Soddy that different atoms might occupy the same place in the Periodic Table. Soddy named these atoms isotopes, which in Greek means equal places (Soddy, 1913). For his experiments, Thomson used a so-called ‘positive ray apparatus’, a predecessor of today’s...
    30,585 Words | 228 Pages
  • Beanium Lab Report - 268 Words
    Purpose The purpose of the “Beanium” lab was to determine the average atomic mass of three different isotopes of beanium. During the lab beans were counted to determine mass of the sum of the beans. Each type of bean were weighed separately and then averaged together to determine the average atomic mass of beanium. Materials and Hazards Analytical balance, coffee filter, pencil, paper, cup, American beans, Nigerian beans, Mexican beans, calculator, and paper. Raw Data Bean Total Mass w/ Cup...
    268 Words | 2 Pages
  • Lab Report Atomic Dating
    Lab Report Atomic Dating Using Isotopes Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Don’t forget to save your lab report to your computer! Reference: Isotope Half-Life Chart Isotope Product Half Life Carbon-14 Nitrogen-14 5730 years Potassium - 40 Argon - 40 1,280 million years Rubidium - 87 Strontium -8 7 48,800 million years Thorium - 232 Lead – 208 14,010...
    517 Words | 5 Pages
  • Atomic Number & Mass Numbers
    &ATOMIC NUMBER AND MASS NUMBERS After reading this section you will be able to do the following: * Define and determine the atomic number of an atom. * Define and determine the mass number of an atom. What is an atom's atomic number? The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen...
    3,466 Words | 10 Pages
  • Chemistry Poster - 838 Words
    BENIFICIAL AND ALTERNATIVELY NOT SO BENIFICAL USES OF RADIATION BY: Sanwal Hayat What is radiation? Radiation is away in which energy moves from one place to another for example energy radiates away when a stone dropped in the water in circular waves while sound energy radiates from speakers mouth to listeners ear and heat energy radiates from sun to earth....
    838 Words | 4 Pages
  • Art and Business Studies - 3170 Words
    PRACTICE EXAMINATION QUESTIONS FOR 1.1 ATOMIC STRUCTURE (includes some questions from 1.4 Periodicity) 1. (a) Complete the following table. |Relative mass|Relative charge| Neutron||| Electron||| (2) (b) An atom has twice as many protons as, and four more neutrons than, an atom of 9Be. Deduce the symbol, including the mass number, of this atom. ..................................................................................................................................... (2)...
    3,170 Words | 12 Pages
  • Candium Lab - 559 Words
    Lalin Candium Lab Report Chemistry Block H Mr. Neil Chipman Calculating the Atomic Mass for Different Candium Isotopes Objective: In this experiment I will be discovering the atomic weight of Candium isotopes. By doing this experiment, it helps us to know how to calculate the relative abundance and atomic mass of each Candium isotopes without having to use the spectrometer. This lab will achieve my understanding of isotopes and why it has different masses but same number of protons...
    559 Words | 2 Pages
  • Iupac Monoisotopic Mass Values of Elements
    Pure Appl. Chem., Vol. 75, No. 6, pp. 683–800, 2003. © 2003 IUPAC INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY INORGANIC CHEMISTRY DIVISION COMMISSION ON ATOMIC WEIGHTS AND ISOTOPIC ABUNDANCES* ATOMIC WEIGHTS OF THE ELEMENTS: REVIEW 2000 (IUPAC Technical Report) Prepared for publication by J. R. DE LAETER1, J. K. BÖHLKE2,‡, P. DE BIÈVRE3, H. HIDAKA4, H. S. PEISER2, K. J. R. ROSMAN1, AND P. D. P. TAYLOR3 of Applied Physics, Curtin University of Technology, Perth, Australia; 2United...
    72,716 Words | 212 Pages
  • Chemistry- "Pennium" Lab Report
    Title: Calculating the Atomic Mass of “Pennium” Purpose: The purpose of this lab is to calculate the atomic mass of “pennium” using pennies made before 1982 and pennies made 1982 or after. Hypothesis: The atomic mass of the pennium will be the average of the average masses of a pre-1982 penny and a post 1982 penny. Procedure: 1. Obtain a bag of pennies 2. Determine the total number of pennies in the bag. Record the value. 3. Sort the pennies by date into 2 piles. One pile should consist...
    592 Words | 2 Pages
  • Nuclear Advancements After the Manhattan Project
    Nuclear Advancements After the Manhattan Project When the first atomic bomb was detonated in Alamogordo New Mexico on June 16, 1945, all the scientists involved in the Manhattan Project understood the great destructive power of radio-active isotopes. Although the atomic bomb was a very destructive force our world would not be as good without it. Because of the government funding involved in the project coupled with the need for an atom bomb, much research that otherwise may not have occurred...
    749 Words | 2 Pages
  • Mass Spectroscopy - 570 Words
    Mass Spectroscopy Mass spectroscopy is a method used in science and industry in order to obtain the masses and relative concentrations of atoms and molecules and to detect isotopes in a sample based on their masses. In order to do this the method requires an instrument called the ‘mass spectrometer’, of which, is able extract accurate information of the relative masses of isotopes and their relative abundance. This makes the mass spectrometer very useful for applications such as carbon...
    570 Words | 2 Pages
  • Potassium Argon Dating - 900 Words
    Before there were any true scientific dating methods, scientists depended on their past archives of fossils and strata in order to determine how old a newly found fossil was. However, it wasn't until the mid 20th century that scientists could abandon this pathetic, inaccurate process and move into a more acceptable precise and detailed procedure. The old way was done by comparing one fossil to other fossils found in the same layer of the earth's ground and studying the physical characteristics...
    900 Words | 3 Pages
  • isotops in agriculture - 428 Words
    Isotopes in Agriculture An isotope is a two or more atom that has different mass number but the same atomic number. An isotope is a variation of an element with a difference in the normal number of neutrons. The increased mass of an isotope can cause the chemical reactions they are used in to progress more slowly than a reaction that does not use isotopes. Not all isotopes are radioactive and there are many uses for them. They can be used in medicine, diagnose, nutrition, agriculture,...
    428 Words | 2 Pages
  • Radioisotopes in Archaeological Dating: Carbon-14
    Radioisotopes in Archaeological Dating- Carbon-14 Production of Carbon- 14 (C-14) The most common isotope of Carbon is C-12. However C-14 can form in the atmosphere as a result of neutrons from cosmic rays colliding with Nitrogen. This removes a proton from the nitrogen, resulting in the formation of C-14 (Image 1). However, C-14 is not a stable isotope and will undergo radioactive decay. C-14 would decay back into N-14 through beta decay. It has a short half life of approximately 5730...
    414 Words | 2 Pages
  • Technetium - 448 Words
    Technetium Nalin Balan NUCL 200 Paper due 02/07/97 Atomic Number: 43 Atomic Symbol: Tc Atomic Weight: (97) Electron Configuration: -18-13-2 History, Properties and Uses: (Gr. technetos, artificial) Element 43 was predicted on the basis of the periodi c table, and was erroneously reported as having been discovered in 1925, at which time it was named masurium. The element was actually discovered by Perrier and Segre in Italy in 1937. It was found in a sample...
    448 Words | 2 Pages
  • Full Form of Elements - 2362 Words
    Israel Science and Technology Homepage Home Search About Contact Bookmark Sort List By Atomic Number Atomic Weight Name Symbol Periodic group, Electron configuration Melting point Boiling point Density Ionization energy Abundance in Earth Year of discovery Hebrew Name List of Periodic Table Elements Sorted by Atomic Number Click a column title, such as Symbol, to sort the table by that item. No. Atomic Weight Name Sym. M.P. ( °C ) B.P. ( °C )...
    2,362 Words | 8 Pages
  • Absolute Dating Methods - 494 Words
    Absolute dating methods are used to determine the age of materials. We need to understand how fossils are made so we can date them properly. There are five ways bones are fossilized. They are by permineralization, unaltered preservation, carbonization, authigenic preservation, and recrystalization (Shepherd). When a fossil is found you need to make sure that it can be preserved properly so it can stay in the same shape to enable research. Many steps are taken to prepare fossils and conserve...
    494 Words | 2 Pages
  • Carbon 14 dating essay
    Carbon-14 Dating: an Invaluable Yardstick in the Chronology of Humans Archeologists use many methods to analyze data from the past. One scientific tool they use is to analyze the radioactive decay of chemical elements found in plant and animal remains, pottery, and even in rocks. Radiocarbon dating, also known as carbon-14 dating, has been one of the most important radioisotope dating methods used. This scientific tool, which was first developed by Willard F. Libby in the late 1940s,...
    3,373 Words | 9 Pages
  • C2 Chemistry - 1448 Words
    |Lesson one – Atomic structure and mass | |1. How to represent atoms. |Starter – what is an atom? What do we call the particles that make up an |Can represent atoms showing atomic number |Model of an atom. |Atomic mass worksheet | |2. The relative masses of protons,...
    1,448 Words | 13 Pages
  • Chem 11 Section Assignment 3.1
    Jeff Fry – Chemistry 11 Section Assignment 3.1:
Determining Atomic Mass Instructions Perform the following calculations. Take care to give answers with the appropriate units and significant figures. Show your solution method clearly. The use of a Periodic Table will be required. 1. Element "E" (not a real symbol for an element), has three naturally occurring isotopes: 60% 228E, 25.0% 222E, and 15.0% 232E. Use this information to determine the atomic mass of element "E". Atomic Mass =...
    562 Words | 3 Pages
  • Chemical Element and Atomic Weights
    The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon earlier discoveries by such scientists as Antoine-Laurent de Lavoisier and Stanislao Cannizzaro, the Russian scientist is generally given sole credit for development of the actualperiodic table itself. The table itself is a visual representation of the...
    1,943 Words | 6 Pages
  • Chemistry 205 Chapter 2 Concept Explorations
    Assignment Chapter 2 Concept Explorations 2.25. Average Atomic Mass Part 1: Consider the four identical spheres below, each with a mass of 4.00 g. a. Calculate the average mass of a sphere in this sample. (4.00 + 4.00 + 4.00 + 4.00)/4= 16.00/4= 4.00g Part 2: Now consider a sample that consists of four spheres, each with a different mass: blue mass is 4.00 g, red mass is 3.75 g, green mass is 3.00 g, and yellow mass is 1.25 g. * a. Calculate the average mass of a sphere in this...
    1,110 Words | 5 Pages
  • Chemistry Test - 792 Words
    Test #3 Chapter 2: 1) What is matter? 2) What is mass? 3) Matter that has a uniform and definite composition is called a ______. Give an example. 4) A quality/condition of a substance that can be observed/measured without changing the substance is a ________ __________. Give examples. 5) What are the three states of matter? Put the correct state of matter in each box. 6) What is the difference between gas and vapor? 7) What is a physical change? Give an example. 8) A physical...
    792 Words | 3 Pages
  • Cobalt History - 845 Words
    As my opening statement I would like to proudly say cobalt is an element which has its own gum. Though completely irrelevant to my report I enjoy it’s succulent, minty and long lasting flavor, because five… will stimulate your senses. I figure I might as well go into the greater details of cobalt as well as what it is and how it came to be. In the year 1739, Swedish chemist, Georg Brandt was trying to prove to his colleges that Bismuth, the element credited for its believed ability to turn...
    845 Words | 3 Pages
  • Biology Radioisotopes - 290 Words
    Radioactive isotopes (radioisotopes) are isotopes which are atoms of the same element that are chemically identical but vary in the number of neutrons they contain. Radioactive isotopes can participate in reactions just like non radioactive elements. Autoradiography is a technique used to trace the movements of certain substances around plants. An example of this is carbon 14. Carbon 14, a radioactive isotope,is added to the carbon dioxide supply of the plant, to study the movement of...
    290 Words | 1 Page
  • Lamarsh Solution Chapter 2
    Lamarsh Solutions Chapter-2 2.5 This is a question of probability, For molecules which have an approximate weight of 2, there are two 1H and we can find the probability or the percentage over 1 as, 0.99985*0.99985=0.99970 The same calculation can be made for the mol. weights of 3 and 4 For 3 there are one 1H and one 2 H and so, 0.99985*0.00015=1.49e-4 For 4 there are two 2 H and so, 0.00015*0.00015=2.25e-8 2.7 From table of nuclides we can find the atomic weights of O and H using the abundances...
    802 Words | 5 Pages
  • Atomic Physics - 2583 Words
    ATOMIC PHYSICS The nuclear atom All matter is made up of atoms which consist of a central nucleus, surrounded by electrons. Inside the nucleus are protons and neutrons. Particle Relative mass Charge Location Proton 1840 + Nucleus Neutron 1840 0 Nucleus Electron 1 - Outside nucleus Proton or atomic number (Z) This is the total number of protons in the nucleus of an atom. Nucleon or mass number (A) This is the total number of protons and neutrons in the nucleus of an atom. Note: a...
    2,583 Words | 10 Pages
  • The Half-Life of a Radioisotope - 774 Words
    The Half-Life of a Radioisotope CHM 152 Abstract: The half-life of an unknown radioactive isotope was investigated. The activity of the samples through use of a Geiger-Muller counter. The activity was measured for approximately five minutes per sample, and a half-life was calculated by the unknown. The results were calculated to indicate a half-life of 6.65 days of the unknown radioisotope. Introduction: The half-life of a radioisotope is defined as the amount of time necessary for...
    774 Words | 4 Pages
  • iupac periodic table - 432 Words
    1 18 IUPAC Periodic Table of the Elements 1 H 2 He helium hydrogen [1.007; 1.009] 2 3 4 Li beryllium 9.012 11 14 15 16 17 4.003 5 atomic number Be lithium [6.938; 6.997] 13 Key: 6 7 8 9 10 O F Ne boron carbon nitrogen oxygen fluorine neon [10.80; 10.83] B [12.00; 12.02] [14.00; 14.01] [15.99; 16.00] 19.00 20.18 12 13 14 15 16 17 18 Na...
    432 Words | 27 Pages
  • Mass Spectrometer - 886 Words
    Mass Spectrometer When you hear the words mass spectrometer, what do you think of? To some people, these words do not have any meaning; however the mass spectrometer has a great significance. The mass spectrometer has been a universal research tool, mostly involved in comparing the masses of atoms. Since the invention of this tool about 100 years ago, the mass spectrometer has been responsible for the description of molecular structure, the detection of isotopes, the classification of...
    886 Words | 3 Pages
  • Ice Man - 836 Words
    Ötzi the ice man On September 1991, two hikers discovered a frozen body in Ötztal area near the border of Austria and Italy. Further examination of the body revelled that it was an old frozen mummy lived thousands years ago. The body was called Ötzi the iceman, after the Ötztal area where he was found. Various technologies and scientific methods were used by historians and archaeologists tried to work out the life and death of Ötzi. Some of these major methods are: Examining the photos from...
    836 Words | 3 Pages
  • Honors Chem - 1231 Words
    Directions: The following questions involve more practice with radioactive decay half-life. Complete the problems to the best of your ability. This assignment is due by next WEDNESDAY, November 16th. 1. If 100.0 g of carbon-14 decays until only 25.0 g of carbon is left after 11 460 y, what is the half-life of carbon-14? a. Calculate how many half-lives have passed during the decay of the 100.0 g sample. 100 grams/2 50 grams/2 25grams…2 half lives have passed b. Solve for the...
    1,231 Words | 4 Pages
  • Radioisotopes - 9133 Words
    adioisotopes: What Are They and How Are They Made?What are isotopes?The isotopes of an element are all the atoms that have in their nucleus the number of protons (atomic number) corresponding to the chemical behavior of that element. However, the isotopes of a single element vary in the number of neutrons in their nuclei. Since they still have the same number of protons, all these isotopes of an element have identical chemical behavior. But since they have different numbers of neutrons, these...
    9,133 Words | 24 Pages
  • Applications with Nuclear Chemistry with Medicine
    h Applications of Nuclear Chemistry with Medicine The role nuclear chemistry plays a major role in medicine, the parts that nuclear chemistry with medicine is the form of radiation. There are types of methods used to apply radiation to the human body to outline some they will be medical imaging (X rays) and radiation therapy which are in the emphasis of nuclear medicine. Also nuclear chemistry has some other methods that deals with nuclear medicine called analytic methods which are using...
    377 Words | 1 Page
  • Bromine: Chemical Element and Average Atomic Mass
    Name: Bromine Element Symbol: Br Atomic Number: 35 Average atomic Mass: 79.904 Name of chemical Family: Halogen State at Room temp: liquid Properties: Melting point: -7.2˚С Boiling Point: 58.78˚С Density: 3.12g/ml Colour: red brown Clarity: Slightly Transparent Odour: Acrid smell similar to chlorine Uses: water purification, Pesticides (methyl bromide) Make plastics flame retardant Mild sedative (sodium bromide) Year...
    404 Words | 4 Pages
  • Radioactive Dating - 1524 Words
    Dating Dating techniques are procedures used by scientists to determine the age of a specimen. 2 types of Dating: *Relative Dating *Absolute Dating Relative Dating -methods tell only if one sample is older or younger than another sample. -They do not provide an age in years. Stratigraphy -Main Relative Dating Method -is the study of layers of rocks or the objects embedded within those layers. -based on the assumption that deeper layers were deposited earlier, and thus are older...
    1,524 Words | 6 Pages
  • Leaving Cert Chemistry - 748 Words
    The Arrangement of Electrons in the Atom An energy level is defined as the fixed energy value that an electron in an atom may have. Bohr’s Theory 1. Electrons revolve around the nucleus in orbitals 2. The electrons in an orbit have a fixed energy Note: Orbitals are also known as energy levels 3. As long as an electron is not in any one particular energy level, it neither gains or loses energy 4. When an atom absorbs energy it jumps to a higher energy level Note: They do not remain...
    748 Words | 4 Pages
  • Rutherford - 298 Words
    Bohr - Rutherford Interactive Investigation 1. Complete the following chart as you work through the investigation. Atomic Number Element Symbol Element Name Number of Protons Number of Electrons Mass Number Number of Neutrons Electron Configuration 18 ArArgon181840222, 8, 85932610138114171547111216 2a) Now rearrange the chart above so that the elements appear in order of their atomic number and as they appear on the periodic table. Atomic NumberElement SymbolElement...
    298 Words | 2 Pages
  • Environmental Policy - Final Project
    Fukushima Causes National Concern: Time for New EPA Policy ERIC ZOPPI DECEMBER 9TH, 2013 SOUTHERN METHODIST UNIVERSITY Holy Fukushima: Statement of the Problem  March 11th, 2011 - Töhoku Earthquake & Tsunami wreaked havoc upon Japan, resulting in the largest nuclear disaster since Chernobyl  The Tokyo Electric Power Company (TEPCO) Fukushima Daiichi Nuclear Power Plant experienced crippling structural damage, as well as subsequent meltdowns of several nuclear reactors and steady leakage...
    1,370 Words | 10 Pages
  • discussion 2 - 250 Words
    • Why and how does atomic nuclear decay take place? Explain. This takes place in an unstable nucleus, it is a spontaneous breakdown. A radioisotope has an unstable nuclei. These radioisotopes are constantly changing to try and be a stable isotope. Since the are constantly changing the often turn into a new element which is called transmutation. • What is the significance of atomic nuclear decay? Eventually they will become stable isotopes but that takes a long time, so these radioactive...
    250 Words | 1 Page
  • Half-life of a Radioisotope - 942 Words
    The Half-Life of a Radioisotope: 10-22-14 Abstract: The half-life of a radioisotope is the time required for half the atoms in a given sample to undergo radioactive, or nuclear decay. The amount of radioactive isotope remaining can be calculated using the equation, t1/2 = .693/K. A sample data set was provided due to safety concerns. Using the data set, a half-life of 14.27days -1 was calculated using graphical linear regression analysis. Introduction: The purpose of this experiment is...
    942 Words | 4 Pages
  • Francium - 1283 Words
    Science report By: Anthony white jnr Introduction Francium (pronounced FRAN-see-em;formerly known as eka- caesium and actinitium K) is a chemical element that has the symbol Fr and atomic number 87. It is the second rarest naturally occurring elements after astatine. Francium is a highly radioactive metal that decays into astatine, radium and radon. As an alkali metal, it has one valence electron. Francium was discovered by Marguerite Perey in France (from which the element...
    1,283 Words | 4 Pages
  • Sodium24 analysis - 433 Words
    Don't have the actaul question sheet anymore, and there is images to go up aswell but im having trouble uploading any of my original essays. 1 & 2. Sodium-24 is an isotope used in medicine and the mining industry, as it is a gamma emitter. It is used for studies of electrolytes within the body, and also to locate leaks in industrial pipelines and oil well studies. 3. Half-life of Sodium-24 is 14.96 hours, and it takes a further 149.6 hours or 6.23 days to become 'safe,' as 10 half-lives is...
    433 Words | 2 Pages
  • Tutorial: Atom and Nucleon Number
    LU 1 - Tutorial 1. Write the formulas for the following compounds: Compound Copper (II) chloride Iron(II) sulphate Sodium sulphate Ammonium nitrate Sodium nitrite Potassium sulphate Magnesium phosphate Formula Compound Lithium acetate Manganese (IV) nitrate Potassium permanganate Iron (III) oxide Potassium sulphite Potassium hydrogen carbonate Sodium iodate Formula 2. Express the following numbers in scientific notation: a) 0.000000027 b) 356 c) 47 764 d) 0.096 3. Express the following...
    1,150 Words | 4 Pages
  • Chemistry - 765 Words
    Isotopes and average atomic mass Isotope: element variations with different atomic mass but same atomic number Isotopic Abundance: the relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages, you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B...
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  • nuclear energy - 828 Words
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