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nuclear chemistry
nuclear bombs
Half Life ;\
decay/radiation
nuclear equations
100
medical use for radioactive elements 
cancer treatments, tumor treatments, scans
100
What are the two types of reactions that make up bombs?
fusion and fission
100

The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.2 minutes has elapsed?

12.5 g remaining

100
The type of decay that can be stopped by a piece of paper
alpha
100

Thorium 236 decays into Thorium 232. What type of radiation occurred?

alpha decay, loses two protons and two neutrons (a weight of 4) 236-4=232

200
the time it takes an amount of radioactive material to lose half its radioactive atoms
half life
200
The material used in the atom bomb is....
Uranium 
200

Os-182 has a half-life of 21.5 hours. How many grams of a 10.0 gram sample would have decayed after exactly three half-lives?

8.75 g have decayed

200
The type of decay that can be stopped by aluminum/steel
beta decay
200
If an element undergoes beta decay will the atomic mass change?
Yes the mass will increase by one, it has lost an electron and a neutron has changed to a proton
300
nuclear chemistry famously used for medicine, bombs and.....
energy, electricity, power
300
the events occurring in a nuclear bomb can be described as a domino effect also known as a __________reaction
chain reaction
300

Fermium-253 has a half-life of 0.334 seconds. A radioactive sample is considered to be completely decayed after 10 half-lives. How much time will elapse for this sample to be considered gone?

3.34 seconds

300
The type of decay where waves of energy are lost
gamma decay
300
Carbon 18 loses two protons and two neutrons, it has gone through __________ decay
alpha decay