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Nuclear Chemistry. Chemistry Ms.Piela. Nuclear Chemistry. Radioactivity is the process of particles being emitted from a nucleus as a result of nuclear instability Any atomic numbers greater than 83 are unstable Examples: Uranium, Plutonium

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nuclear chemistry

Nuclear Chemistry

Chemistry

Ms.Piela

nuclear chemistry1
Nuclear Chemistry
  • Radioactivity is the process of particles being emitted from a nucleus as a result of nuclear instability
    • Any atomic numbers greater than 83 are unstable
    • Examples: Uranium, Plutonium
  • Half-life is the amount of time required for a decaying substance to lose half of its original amount
beta decay
Beta Decay
  • Type of decay in which an electron is emitted
    • Symbol:
  • A neutron decomposes into a proton, an electron, and something known as an antineutrino
  • Moderate penetrating power (4 mm of body tissue)
    • Example:
alpha decay
Alpha Decay
  • Type of decay in which a helium nucleus is emitted
    • Symbol:
  • Heaviest form of nuclear decay
  • Low penetrating power (0.5 mm body tissue)
    • Example:
gamma decay
Gamma Decay
  • Type of decay in which large amount of energy are emitted from a nucleus
    • Symbol: 
  • Often emitted along with alpha or beta particles
  • No mass or charge
  • Very high penetrating power (penetrates body easily, requires metal to block
nuclear changes
Nuclear Changes
  • Nuclear Fission is when the nucleus of an atom splits in order to form a more stable nucleus
nuclear changes1
Nuclear Changes
  • Nuclear fusion is the combining of smaller nuclei into larger ones
writing nuclear equations
Writing Nuclear Equations
  • Method
    • Balance out atomic number and mass number for each side
    • The total for mass number and atomic number should be equal
  • Example Problem #1
    • Write a balanced nuclear equation that shows the alpha decay of polonium-218
nuclear equation example
Nuclear Equation Example
  • Example Problem #2
    • Uranium-238  isotope undergoes beta decay and also emits gamma rays. Express this in an equation
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