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Nuclear Chemistry & Radioactivity Notes Packet

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Ch. 7 Nuclear Chemistry Notes Packet
 Nuclear Reaction
 Radioactivity is:
 These ________________ go through changes by emitting or releasing energy.
 After the changes in the __________, the element changes into a different ______________ of the
same element or changes into a completely different element, this process is called
_____________________.
 Nuclear Radiation is:
 Common types of nuclear radiation include _________particles, _________particles, _________rays.
 Alpha Particle is:
 Alpha particle is the same thing as a __________________.
 During alpha decay, the product isotope has _____fewer protons and ______fewer neutrons than the
original.
 Draw an alpha particle:
Draw the symbol:
Example:
 Alpha particles are the ___________penetrating type of radiation; they can be stopped by
_______________.
 Beta particle is:
 Beta particle is the same thing as a _______________________.
 During beta decay, the product isotope has _____more proton and _____neutron less than the
original.
 Draw a beta particle:
Draw the symbol:
Example:
 Beta particles are the “medium” type of radiation, it can pass through ________, but stopped
by___________.
 Gamma ray is:
 Gamma ray is not a particle but a _________ of energy.
 During gamma decay, the atomic number and mass number of the atom remain the ____________,
but the _________ of the nucleus decreases.
 No drawing
Draw the symbol:
Example:
 Gamma rays are the __________penetrating, but cause the ________damage; they can be stopped by
_____.
 Nuclear Decay
 Explain Alpha decay:
 Explain Beta decay:
 Half-life is
 Unlike chemical reaction rates, which vary with the conditions of a reaction, nuclear decay rates are
________.
 How do you calculate half-life?__________________________________________________________.
 After 1 half-life __________of the sample remains, after 2 half life’s___________ of the sample
remains, after 3 half life’s __________ of the sample remains.

Example: Iodine-131 has a half-life of 8.07 days, after 2 half life’s how much of the sample remains?
After 3? Formula:
half-lives elapsed= total time of decay/half-life
 Differentiate between fission and fusion
 Fission is

Fission occurs in_____________________________.

Example:
 In nuclear fission, tremendous amounts of _________ can be produced from vary small amounts of
mass.
 Fusion is

Fusion occurs in_______________________________.

Example:
Describe nuclear energy, its practical application as an alternative energy source, and its potential problems.
Pg (235-240)
Pros:
Cons: