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Nuclear Chemistry & Radioactivity Notes Packet


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: