NUCLEAR EQUATIONS
Complete the following nuclear equation:
42K→ _____ + _____
42/19K --> 0/-1e + 42/20Ca
REFERENECE TABLES WHERE YOU CAN FIND HALF LIVES AND DECAY MODES/NOTATIONS.
TABLES N and O
Would you prefer a radioisotope with a short or long half life to be used as a medical tracer in your body?
SHORT
A heavy nucleus splits into two lighter nuclei during which process?
FISSION
This type of radiation has the greatest penetrating power
GAMMA
Complete the following nuclear equation:
222Rn→ _____ + _____
222
86Rn --> 4/2He +218/84Po
According to this graph, what is the half life of this element?
10 days
Which radioisotope is used to study how old something once living is?
C-14
What is a risk associated with the production of energy in a nuclear power plant?
meltdown, storage of waste, environmental concerns
Nuclear reactions convert MASS to _________________. (Lots of it!)
Energy
Complete the following nuclear equation:
53Fe→ _____ + _____
53Fe --> 0/+1e + 53/25 Mn
26
What fraction of a Sr-90 sample remains unchanged after 87.3 years?
1/8
1-->1/2-->1/4-->1/8
Which radioisotope is used to diagnose thyroid disorders? Like Mrs. Washburn's
I-131
I will accept just Iodine.
What does this equation represent?
235/92U + 1/0n → 141/56Ba + 92/36Kr + 3 neutrons
Nuclear FISSION
Which nuclear emission has the greatest mass?
Alpha
4/2 He
Complete the nuclear equation
_______ --> 4/2He + 206/82 Pb
210
84 Po
Determine the time required for a sample of radon-222 to decay until only 1/4 of the original sample remains unchanged
2 X 3.823 days=7.646 days
Radioisotopes can be used to treat what disease?
Cancer
What radioactive element serves as the fuel for nuclear fission?
Uranium
The stability of an isotope is related to the ratio of which subatomic particles? (HINT-this is NUCLEAR chem, so they are in the NUCLEUS!)
protons and neutrons
What is the missing blank?
2 /1H + 3/1H → 4/2He + __________ + energy
1
0n = NEUTRON
What is the total number of years that must pass before only 25.00 grams of an original 100.0-gram sample of C-14 remains unchanged?
5715 years 2 = 11,430 years
100-->50-->25 grams = 2 cycles of decay
What is the biggest benefit of nuclear power?
It produces so much MORE energy than traditional sources.
Give a risk associated with operating a nuclear fission reaction plant.
Fear of meltdown, environmental damage, terrorism, and storage of waste
Define the term transmutation.
A nuclear equation that produces a new element.