Nuclear Chemistry (Only topics indicated on midterm review guide)

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what formula is used to find binding energy?
E=mc squared
what are the 3 main types of radioactive decay?
alpha, beta, and gamma
what is alpha decay?
what is alpha decay?
a high energy helium nucleus
what is beta decay?
what is beta decay?
a high energy electron
what is gamma decay?
what is gamma decay?
pure energy; called a ray rather than a particle
which type of decay is the strongest?
gamma
which type of decay is the weakest?
alpha
what is the main difference between nuclear reactions and normal chemical changes
nuclear reactions involve the nucleus, not electrons
what are the 3 less common types of radioactive decay?
neutron, positron, and proton
neutron decay
neutron decay
positron decay
positron decay
just a positive electron
alpha emission
a type of nuclear decay that atoms can go through when the nucleus is too big (the atomic number is over 83)
beta emission
a type of nuclear decay that atoms can go through when the nucleus has too many neutrons and becomes unstable. The atomic number must be less than 83 and the mass number must be more than the one given on the periodic table.
electron capture
when the nucleus does not have enough neutrons, it can undergo electron capture. This occurs when the atomic number is less than 83, and the mass number is smaller than the one on the periodic table.
half-life
for each duration, one half of a given substance decomposes
formula for half-life
final mass= initial mass(1/2)^n
fission
splitting a nucleus into two or more smaller nuclei. It is usually accomplished by firing a neutron at an unstable isotope and it causes it to split into many pieces.
fusion
the combining of low weight nuclei into one larger one, they are fused together
what are 3 uses of nuclear reactions?
medicine, weapons, nuclear power
Categories: Nuclear Chemistry