Nuclear Chemistry

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Across
  1. 2. Combining small nuclei into a larger nucleus, releasing energy.
  2. 5. An isotope with an unstable nucleus that undergoes radioactive decay.
  3. 8. Element changes caused by spontaneous radioactive decay.
  4. 9. A high-speed electron emitted from the nucleus.
  5. 10. High-energy electromagnetic radiation emitted from a nucleus.
  6. 13. Element changes caused by particle bombardment.
  7. 15. A device that speeds up charged particles to high energies.
  8. 18. The isotope produced after radioactive decay.
  9. 20. The spontaneous emission of radiation from an unstable nucleus.
  10. 22. The original radioactive isotope before decay.
  11. 23. A process in which the nucleus captures an inner electron.
  12. 24. A device that controls a fission chain reaction to produce energy.
  13. 27. A reaction that changes the nucleus of an atom.
  14. 30. A self-sustaining series of fission reactions.
  15. 31. A helium nucleus containing 2 protons and 2 neutrons.
  16. 32. The force that holds nucleons together within the nucleus.
  17. 33. The region where neutron-to-proton ratios result in stable nuclei.
  18. 34. The energy that holds protons and neutrons together in a nucleus.
Down
  1. 1. A positively charged electron emitted during certain radioactive decays.
  2. 3. Energy emitted as particles or electromagnetic waves.
  3. 4. The total number of protons and neutrons in a nucleus.
  4. 6. Striking nuclei with high-energy particles to induce reactions.
  5. 7. The dense center of an atom containing protons and neutrons.
  6. 11. The number of protons in the nucleus.
  7. 12. A specific isotope characterized by its number of protons and neutrons.
  8. 14. Atoms of the same element with different numbers of neutrons.
  9. 16. The process by which an unstable nucleus releases energy or particles and changes into a more stable nucleus. -
  10. 17. The difference between the mass of a nucleus and the sum of its particles.
  11. 19. The time required for half of a radioactive sample to decay.
  12. 21. The conversion of one element into another through nuclear processes.
  13. 24. A proton or neutron located in the nucleus.
  14. 25. Hazardous material containing radioactive substances.
  15. 26. A symbolic representation of a nuclear reaction showing changes in mass number and atomic number.
  16. 28. Using radioactive decay and half-life to determine the age of materials.
  17. 29. Splitting a large nucleus into smaller nuclei, releasing energy.