Fusion vs Fission
Define fusion:
Joining two or more things together
Are radioactive decay and nuclear decay the same thing?
Yes
Define half-life:
The average amount of time it takes for a radioactive substance to decay to half its original mass
Define isotope:
Atoms of the same element that have a different atomic mass
Define Fission:
Splitting or breaking down into smaller parts
What are the three types of nuclear decay?
Alpha, Beta, and Gamma
If a substance has experienced 5 half-lives, how much percentage of the original substance remains?
3.125%
1 u =
1.66x10^-27 kg
An incredible amount of what is released through fusion reactions?
Energy
Which type of nuclear decay are the parent and daughter the same?
Gamma Decay
What is the equation for half-life?
A=Ao(1/2)^t/h
What defines isotopes, elements, and ions?
isotopes-neutrons
elements-protons
ions-electrons
What element is used in fission reactors?
Uranium
What are the three types of Beta Decay?
Beta-Negative, Beta-Positive, and Electron Capture
An original substance was 160g, it is now 40g how many half-lives occurred?
2
mcalculated =
# of neturons x mn + # of protons x mp + # of electrons x me
Fission reactions can lead to a __________?
Chain reaction
What is emitted during alpha decay, beta-negative, beta-positive, and gamma decay?
Alpha- aplha particle 4,2 He
Beta-negative- an electron 0,-1 e
Beta-positive- a positron 0,+1 e
Gamma- photon or gamma ray 0,0y
A nuclear waste sample decreases from 200g to 6.25g over time. If the rate of decay is 7 hours how long did this take?
35 hours
atomic mass - atomic number