Random 1
Which type of energy combines two light nuclei to create a heavy nuclei.
Fusion
What are the three types of radioactive decay?
Alpha, Beta, and Gamma
How can you tell a nuclear equation is spontaneous?
Not bombarded by a particle
Define a half life
A half-life is the time required for one-half of the atoms in an unstable isotope to emit radiation and decay into its products
What is a Alpha Particle?
42 HE
What is a BETA Particle?
0-1 e
Is Nuclear Fission or Fusion currently being used in Nuclear powerplants?
Nuclear Fission
How many half lives will it take for an isotope to decay to zero grams?
It will never be able to decay to zero grams, there will always be some particles left.
Identify the following type of radioactive decay equation.
13445Rh ---> 42He+ 13043Tc +00 Y
Alpha with Gamma
Identify the following type of radioactive decay equation.
4529Ni ----> 4530Cu + 0-1e
Beta
What is a transmutation?
Change of the nucleus of an atom.
If you start with a sample of carbon-14 after 2 half lives what percentage of the original carbon-14 would you have left?
25%
What is the charge of a Alpha and a Beta Particle?
Alpha: +2
Beta: -1
Complete the following type of radioactive decay equation.
____ ----> 3015 P + 0-1e
3014Si ----> 3015 P + 0-1e
List two uses of nuclear chemistry
Answers will vary
If I have 8 grams of a substance that has gone through 4 half lives. How much was the original substances mass?
128 grams
What type of decay does Nitrogen-16 undergo?
Beta decay
Complete the following type of radioactive decay equation.
_____ ---> 42He+ 17380Hg +00 Y
17782Pb ---> 42 He+ 17380 Hg +00 Y
Rank the three types of decay in terms of their penetrating power. Rank from weakest to strongest
alpha,beta,gamma
Radon-222 decays from 100 grams to 12.5 grams in 21 days. How long is one half-life?
7 days