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Hint
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Answer
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what do you call the energy required to disassemble an atomic nucleus into its constituent protons and neutrons
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nuclear binding energy
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what is it when large nuclei spontaneously split into two smaller nuclei
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fission
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what conditions are needed for nuclear fusion
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high temperature
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high density
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what does spontaneous fission mean
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occurs without any external intervention
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what does random mean
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unpredictable
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what are the units of the decay constant
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inverse time
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what is low-level ionizing radiation present in the environment from natural and artificial sources, not caused by deliberate introduction
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background radiation
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what process can cause an electron to change energy levels
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excitation/ionisation
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how do unstable nuclei become more stable
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by emitting radiation
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which radiation is stopped by a few cm of air or a sheet of paper
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alpha
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what does beta minus radiation consist of
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electrons
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what does beta plus radiation consist of
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positrons
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which radiation is stopped by a few mm of aluminium or a metre of air
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beta minus
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which radiation has 0 range
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beta plus
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what is gamma radiation
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high energy electromagnetic radiation
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do gamma rays have a charge
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no
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which type of radiation is most ionising
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alpha
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which type of radiation is most weakly ionising
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gamma
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which radiation travels the fastest and at what speed
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gamma at speed of light
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which radiation is emitted when a nucleus has too much mass
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alpha
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which radiation is emitted when a nucleus has too many neutrons
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beta minus
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which radiation is emitted when a nucleus has too many protons
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beta plus
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which radiation is emitted when. nucleus has top much energy
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gamma
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what absorbs gamma radiation
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several inches of lead
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which type of decay is it when a neutron turns into a proton, and releases an electron and electron antineutrino
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beta minus
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which decay is it when a proton turns into a neutron, and releases a positron and electron neutrino
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beta plus
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how does the mass of a nucleus compare to the sum of the mass of its individual constituents?
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always less
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what is the name given to the difference in mass of the nucleus and the sum of mass of separate constituents
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mass defect
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the mass defect is a result of some mass being converted into ______ used to hold the nucleus together
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energy
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what is the name for the energy required to hold nucleus togetehr
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binding energy
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what is a measure used to compare the binding energies of different nuclei
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binding energy per nucleon
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the larger the binding energy per nucleon, the ____ stable the nucleus will be
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more
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what is the most stable nucleus
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iron
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state 2 nuclear processes which can be used to generate energy
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fission
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fusion
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what are the 2 types of fission
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spontaneous
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induced
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which fission includes absorbing a neutron and splitting into 2 smaller nuclei, releasing energy and a neutron
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induced
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which process includes joining 2 nuclei to make a larger one, whilst releasing energy in the process
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fusion
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where does nuclear fusion constantly happen
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stars
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