This decay type involves the release of a helium atom or 2 protons and 2 neutrons
What is alpha decay?
100
If you start with an 80 gram sample of Carbon 14 and 10 years pass, how many times would this sample be cut by 1/2 if it decayed to 40 grams remaining?
What is once?
100
Energy emitted in the form of particles
What is radiation?
100
Occurs when the nucleus of an isotope splits due to a free neutron striking it and releasing energy to produce a new isotope.
What is nuclear fission?
200
This type of decay converts a proton into a neutron and releases a positively charged electron.
What is positron decay?
200
The rate an isotope decays by 1/2 the previous amount is 10 years. If you start with a 400 gram sample of Uranium-235, how much of that 400 gram sample will remain after 30 years?
What is 50 grams?
200
This causes isotopes to decay
What is too many neutrons or protons?
200
Occurs when 2 isotopes with a positively charged nucleus merge and fuse together due to extreme heat and pressure.
What is nuclear fusion?
300
This type of decay involves changing 1 neutron into a proton and releasing an electron
What is beta decay?
300
The fraction of a 200 gram sample that is left if 3 half lives pass.
What is 1/8th of the original gram sample?
300
When protons and neutrons change their positions in the nucleus they gave off this type of decay
What is gamma decay?
300
This type of reaction is used in the nuclear bomb
What is fission reaction?
400
232 U = 4 He + _________
92 2
What is 222 Th
90
400
If 7/8 th of a 200 gram sample of Carbon-14 has decayed, what fraction of the sample is remaining?
What is 1/8 th?
400
A particle with the same number of neutrons, but different number of protons
What is an isotope?
400
This type of reaction occurs in the sun
What is fusion reaction?
500
120 Cs = ________ + 120 Xe
55 54
What is 0 e ?
+1
500
The number of years that will have passed is a 80 gram sample has decayed to 5 grams and each time the sample is cut by 1/2 5 years will have passed each time.