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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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