Basic Concepts
A risk associated with working with radioactive materials
What is gene mutations (cancer) OR stomach problems OR nausea
A reaction such as radioactive decay, that alters the energy, composition, or structure of an atomic nucleus.
What is nuclear reaction
235/92U → _____ + 231/90 Th
What is 4/2 He
The charge of an alpha particle
What is positive
A nuclear reaction that gives off an electron
What is beta radiation
_____ → 4/2He + 208/81Tl
What is 212/83Bi
What part of the atom breaks down during nuclear reactions?
What is nucleus
this is what happens to the original isotope after going through nuclear reaction
226/88Ra → 4/2He + _____
What is 222/86Rn
If the half life of a substance is 10 minutes how much of a 100 gram sample would you have after thirty minutes?
What is 12.5g
The spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus, accompanied by emission of particles, electromagnetic radiation, or both, is
What is radioactive decay
The type of radiation that will travel through most objects that are not denser than thick concrete or lead
What is gamma radiation
Spontaneous breakdown of a radioisotope into another stable element.
What is natural decay
6/3Li →6/4Be + _____
What is 0/-1e
Equation to find the energy change in nuclear reactions
What is E=mc^2
The decay of the nucleus by emitting particles and/or energy in order to become lighter and more stable
What is radioactivity
What is given off by an alpha reaction
What is a helium atom?
What type of nuclear reaction reduces the number of protons by two every time?
What is alpha
142/56Ba → 4/2He + ________
What is 138/54 Xe
What are the four numbers you have to find when doing a half life problem?
What is Mass initial, mass final, time, half life