Module 23 ALL Vocab

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Across
  1. 2. a series of nuclear reactions that starts with an unstable nucleus and results in the formation of a stable nucleus
  2. 4. a nuclear fusion reaction
  3. 5. a spontaneous process in which unstable nuclei lose energy by emitting radiation
  4. 6. a high-speed electron with a 1− charge that is emitted during radioactive decay
  5. 9. a particle with two protons and two neutrons, with a 2+ charge; is equivalent to a helium-4 nucleus, can be represented by α; and is emitted during radioactive decay
  6. 14. a nuclear reactor that is able to produce more fuel than it uses
  7. 16. a radioactive decay process that occurs when an atom's nucleus draws in a surrounding electron, which combines with a proton to form a neutron, resulting in an X-ray photon being emitted
  8. 18. high-energy radiation that has no electrical charge and no mass, is not deflected by electric or magnetic fields, usually accompanies alpha and beta radiation, and accounts for most of the energy lost during radioactive decay
  9. 19. the process in which nuclei are bombareded with high-velocity, charged particles in order to create new elements
  10. 21. a particle that has the same mass as an electron but an opposite charge
  11. 23. the conversion of an atom of one element to an atom of another element
  12. 24. the difference in mass between a nucleus and its component nucleons
  13. 25. a radioactive decay process in which a proton in the nucleus is converted into a neutron and a positron, and then the positron is emitted from the nucleus
  14. 26. a force that acts on subatomic particles that are extremely close together
  15. 27. the region on a graph within which all stable nuclei are found when plotting the number of neutrons versus the number of protons
  16. 28. the splitting of a nucleus into smaller, more stable fragments, accompanied by a large release of energy
Down
  1. 1. a type of equation that shows the atomic number and mass number of the particles involved
  2. 3. the ability of radiation to pass through matter
  3. 7. a reaction that involves a change in the nucleus of an atom
  4. 8. radiation that is made up of beta particles; is deflected toward a positively charged plate when radiation from a radioactive source is directed between two electrically charged plates
  5. 10. the rays and particles—alpha and beta particles and gamma rays—that are emitted by radioactive materials
  6. 11. the minimum mass of a sample of fissionable material necessary to sustain a nuclear chain reaction
  7. 12. radiation that is made up of alpha particles; is deflected toward a negatively charged plate when radiation from a radioactive source is directed between two electrically charged plates
  8. 13. an element with an atomic number of 93 or greater in the periodic table
  9. 15. the process of binding smaller atomic nuclei into a single, larger, and more stable nucleus
  10. 17. the process in which some substances spontaneously emit radiation
  11. 20. isotopes of atoms that have unstable nuclei and emit radiation to attain more stable atomic configurations
  12. 22. one of the positively charged protons and neutral neutrons contained in an atom's nucleus