Nuclear Fission Crossword Puzzle

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QUESTIONS LIST:

nucleus : center of a cell
neutron : subatomic particle with no charge
nuclear fusion : light elements form heavier elements and release energy
nuclear fission : the splitting of a large nucleus to produce two smaller ones
alpha particle : two protons and two neutrons bound together to make a helium-4 nucleus
gamma radiation : electromagnetic radiation arising from the radioactive decay of atomic nuclei
mass number : total number of protons and neutrons in an atomic nucleus
proton : subatomic particle with positive electric charge
radioactivity : emission of energy and particles by unstable atomic nuclei
isotope : an atom of the same element with different numbers of neutrons
chain reaction : sequence of reactions where a reactive product causes additional reactions
beta particle : high energy high electron emitted by radioactive decay of substances
half life : the concentration of a substance to fall off half of its original value
atomic number : same number of protons