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    C. Neutron D.

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    The decay of to occurs through the emission of a(n) ________. A. alpha particle B. beta particle C. neutron D. proton E. positron 3. Radionuclides which have too low of a neutron/proton ratio generally decay through ________. A. beta emission B. electron capture or positron emission C. gamma ray emission D. alpha emission E. neutron absorption 4. How many neutrons does have? A. 21 B. 23 C. 25 D. 46 E. 67 5. Identify the missing product in the following nuclear reaction:

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    has a diameter of (1.392 million km). A sugar cube size of material from a neutron star would weigh about 1 billion tons‚ roughly the size of Mount Everest according to NASA. Normally a star is seen by the light it gives off 5. However‚ neutron stars are very hot‚ roughly 100‚000K‚ as a result most of their energy comes off as x-rays (not visible light). For that reason‚ it makes them difficult to see and detect. Neutron stars have about three characteristics that can be detected. First‚ is their

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    Low-Background Muon and Neutron Benchmarking for Applications in Ultra-Rare Event Searches John Greavu‚ Mentor: Professor Priscilla Cushman Purpose The primary purpose of this study is to measure‚ to a high precision‚ the muon and neutron backgrounds experienced at the Low Background Counting Facility (Fig. 1) in the Soudan Underground Laboratory. An active muon veto shield lining most of the interior‚ in addition to a neutron detector—the Neutron Multiplicity Meter—in the facility‚ allow for benchmark

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    atoms. Atoms are composed of three types of particles: protons‚ neutrons‚ and electron. Protons and neutrons are responsible for most of the atomic mass. Example; if a person weighed 150 lbs. approximately 149 lbs. and 15 ounces of that person would be comprised of protons and neutrons while only 1 ounce of their being would be made of electrons. Both the protons and neutrons reside within the nucleus. Protons have a positive charge‚ neutrons have no charge; they are neutral. Electrons reside in orbitals

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    Neutron Stars are born from the deaths of stars. When a star dies‚ if it is not massive enough to become a black hole‚ it becomes a neutron star. A neutron star has a mass between one to 3 suns compressed into the size of central park. A sugar cube sized slice of a neutron star will weigh around 10 billion tons(around the mass of Mt. Everest). The reason it can do this is because hydrogen atoms(the simplest and lightest material) are around 99.9999999999996% empty space. The atoms in this star

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    Name: Cayla Klimach Date: 2/13/15 Student Exploration: Element Builder Vocabulary: atom‚ atomic number‚ electron‚ electron dot diagram‚ element‚ energy level‚ ion‚ isotope‚ mass number‚ neutron‚ nucleus‚ periodic table‚ proton‚ radioactive‚ valence electrons Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What are some of the different substances that make up a pizza? :Cheese‚ tomato sauce‚ meat 2. What substances make up water? Hydrogen & Oxygen (H2O) 3. What substances

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    Element Builder

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    Name: _____Alvaro_________________________________ Date: ________________________ Student Exploration: Element Builder Vocabulary: atom‚ atomic number‚ electron‚ electron dot diagram‚ element‚ energy level‚ ion‚ isotope‚ mass number‚ neutron‚ nucleus‚ periodic table‚ proton‚ radioactive‚ valence electrons Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What are some of the different substances that make up a pizza? _____________________ ___________________

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    Silver Atomic Model

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    smaller particles? An atom is made out of protons‚ neutrons‚ and electrons. Aside from that‚ inside an atom there is a nucleus‚ and there are also 3 energy levels. Let’s start with the nucleus‚ the nucleus is the very small center core of an atom. The nucleus is located inside the atom‚ In the center. Within the nucleus‚ is a group of smaller particles called protons and neutrons. Protons are positive electric charge located inside the nucleus. Neutrons are neutral electric charge or have no charge and

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    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 |17

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    work by releasing the enormous amounts of energy that are contained in the bonds of atoms. The bonds of atoms can be broken in two ways. The first way is by fission‚ and the second way is by fusion. Fission works by the splitting of atoms with neutrons. To start the reaction‚ though‚ an initial kick of energy is needed. This energy kick usually comes from a conventional explosive (Kroenig‚ “Nuclear Weapon”). Fission weapons work by inducing a critical mass from a sub-critical mass of one of the

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    Uranium Research Paper

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    elements (Hydrogen is the lightest). Uranium is 18.7 times as dense as water. Like other elements‚ uranium occurs in several slightly differing forms known as ’isotopes’. These isotopes differ from each other in the number of uncharged particles (neutrons) in the nucleus. Natural uranium as found in the Earth’s crust is a mixture largely of two isotopes: uranium-238 (U-238)‚ accounting for 99.3% and uranium-235 (U-235) about 0.7%.The isotope U-235 is important because under certain conditions it can

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    Copper's Atomic Structure

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    information regarding its atomic buildup. Every element’s atoms are composed of three main subatomic particles: neutrons‚ electrons and protons. Located in the atom’s nucleus‚ protons and neutrons are referred to as nucleons. The electrons rest outside of the nucleus at various energy levels (orbitals). Most of an atom’s mass comes from its very small nucleus‚ whose protons and neutrons each have a mass of approximately 1 u (atomic mass units). Electrons‚ on the other hand‚ have a mass of around 0

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    Final Paper

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    References: Brooks‚ F. D.‚ Buffler‚ A.‚ Allie‚ M. S.‚ Bharuth-Ram‚ K.‚ Nchodu‚ M. R.‚ & Simpson‚ B. R. S. (1998). Determination of HCNO Concentrations by Fast Neutron Scattering Analysis. Nuclear Instruments & Methods in Physics Research. Buffler‚ A. (2004). Contraband detection with fast neutrons. Radiation Physics and Chemistry‚ 71(3-4)‚ 853–861. Colmenarez‚ A.‚ Gutta‚ S.‚ & Trajkovic‚ M. (2003). Surveillance System with Suspicious Behavior Detection. Coughlin‚ C. C.‚ Cohen

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    Nuclear World

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    hydrogen bomb is near unimaginable. But first‚ let’s take a look into what a nuclear bomb really is. An atom is made up of three subatomic particles -- protons‚ neutrons and electrons. The center of an atom‚ which is called the nucleus‚ is composed of both protons and neutrons. Protons are positively charged‚ neutrons have no charge at all‚ and electrons are negatively charged. The proton-to-electron ratio is always one to one‚ so the atom as a whole has a neutral charge. But an atom’s

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    in a small portion‚ meaning that there must be a nucleus holding the protons and neutrons. Why is the gold foil experiment so significant? The significance of the gold foil experiment is that it proved Thomson’s theory of a plum pudding wrong as there isn’t a large amount of mass in the nucleus. What is fission? Fission is a nuclear reaction in which the nucleus splits into smaller parts. This can produce free neutrons and photons‚ and it releases a large amount of energy. Because of the large amounts

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    Chemistry Test

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    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 blend

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    CHEM 101 – General Chemistry I Chapter 2 Reading Assignment Pages 31 - 60 2.1 – What is Matter Made Of? Who 1st discovered atoms – Democritus where the first person to discover atoms. His followers would often think that there were multiple kinds of atoms and not just plain atoms. 2.2 – How Do We Classify Matter? Elements – A substance that consists of identical atoms. Today there are 116 known elements. Example – C= Carbon; H= Hydrogen Compounds – A pure substance made up of two or more elements

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    Atomic Physics

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    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 nucleon is a particle found in the nucleus i.e. a proton or a neutron. In general‚ if N is the neutron number of an element‚ then A=Z+N

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    Material Science Tutorial

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    Calculate the number of neutrons for the following atoms: a) Aluminum b) Boron c) Magnesium d) Zinc e) Ferum f) Argon Answer:- Mass Number = (Number of Protons) + (Number of Neutrons) a) 26.98 = 13 + Neutrons 26.98 – 13 = Neutrons Neutrons = 13.98 b) 10.81 = 5 + Neutrons 10.81 – 5 = Neutrons Neutrons = 5.81 c) 24.31 = 12 + Neutrons 24.31 – 12 = Neutrons Neutrons = 12.31 d) 65.38 = 30 + Neutrons 65.38 – 30 = Neutrons Neutrons = 35.38 e) 55

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    Test 4

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    following items. ​ (14 points) 1.  emitted from a cathode ray tube  Bohr  2.  discovered the neutron  Chadwick  3.  discovered the electron  JJ  4.  postulated the quantum atom  nucleus  5.  discovered the proton  electrons  6.  father of atomic theory  Dalton  7.  location of most of the mass of the atom  Bohr  1.  unlike charges  attract  2.  like charges  repel  3.  charge on a neutron  nonmetals  4.  location of an electron  periodicity    shell  5.  low ionization energies 

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