chem 17

  1. study of reactions involving the nucleus
    nuclear chemistry
  2. who first discovered what would later be called radioactivity
    Henri Becquerel
  3. who discovered the two radioactive elements of radioactivity
    Marie Curie
  4. both the particles and electromagnetic waves produced by a nuclear reaction
    nuclear radiation
  5. what holds the nucleus together
    strong nuclear force
  6. conversion of one nuclide into another in a spontaneous nuclear reaction
    radioactive decay
  7. term for atoms of the same element that differ in their mass numbers
  8. any unstable substance that tends to undergo nuclear decay is said to be?
  9. term for specific type of atom described by both its atomic and mass number
  10. the mass of every atom is measurably less than the total mass of its individual particles
    nuclear mass defect
  11. law that states that matter and energy are neither created nor destroyed
    law of conservation of matter and energy
  12. the amount of energy necessary to break up a nucleus into its component nucleons
    nuclear binding
  13. a 2+ ion of helium -4 traveling at high speed emitted during alpha decay
    alpha particle
  14. an electron traveling at high speed emitted during beta decay
    beta particle
  15. electromagnetic waves of very high frequency and energy
    gamma radiation
  16. the decay rate of a substance

    length of time it takes for half of the original substance to decay into the new substance
  17. amount of decay occurring in a radioactive substance
  18. long series of radioactive nuclides ending in a nonradioactive (stable) nuclide
    radioactive decay series
  19. use magnetic electric fields to accelerate charged particles to energies of several million electron volts
    particle accelerators
  20. any radiation capable of causing ionization
    ionizing radiation
  21. units used to measure radiation exposure
    • rad
    • rem
    • gray
    • sievert
  22. theĀ splittingĀ of heavy nuclei into two or more smaller nuclei
    nuclear fission
  23. who coined the term nuclear fission
    Lise Meitner
  24. when a nucleus undergoes fission, releasing neutrons that cause other atoms to fission, which in turn causes additional fissions, and so on
    nuclear chain reaction
  25. the amount and density of a substance
    critical mass
  26. what in a nuclear reactor slows neutrons for easier capture by fissionable atoms
  27. what in a nuclear reactor carries heat our of the core and keeps core from overheating
  28. what in a nuclear reactor control the reaction rate by absorbing some of the neutrons
    control rods
  29. what in a nuclear reactor is designed to prevent emission of radioactive material into the environment in the event of a serious accident
    containment vessel
  30. what is called when a pipe in a nuclear reactor rupture, pump failure, or other breakdown deprives the core of coolant, possible causing the core to overheat
    loss of coolant accident
  31. In nuclear reactor, when the core overheats so badly that the fuel melts right through the bottom of the pressure vessel
  32. what term refers to the recycling of spent nuclear fuel
  33. combining of small nuclei into larger ones
    nuclear fusion
Card Set
chem 17
A Beka 11-12th grade science/chemistry