chemistry

12345678910111213141516171819202122232425
Across
  1. 1. the ______ of a nucleus depends on the ratio of protons to neutrons
  2. 8. any energy emitted from a source
  3. 9. The combining of atomic nuclei
  4. 10. Prevents overheating
  5. 12. large atoms become clustered, triggering fission in neighboring atoms
  6. 15. high energy emitted from atoms
  7. 17. ______ is released when an atom has to many neutrons
  8. 18. particles of radiation that can be blocked by paper
  9. 20. turns mechanical to electrical energy
  10. 22. radioactive material that is propelled into the atmosphere
  11. 23. hydrogen bombs use 2 _______ of hydrogen - deuterium,and tritium
  12. 25. nuclear core becomes so hot it melts
Down
  1. 2. any wave length or frequency able to remove electrons from atoms
  2. 3. given amount of time needed for half of the sample to decay
  3. 4. generates the initial neutrins used for an atomic weapon
  4. 5. particle within an atom with no charge
  5. 6. amount of radiation exposure
  6. 7. multi low-level radiation sickness
  7. 11. converts a neutron to a proton
  8. 13. rods are collected together into _____
  9. 14. particle with an atom with a negative charge
  10. 16. The splitting of of a nucleus into smaller nuclei
  11. 19. cluster of fuel; enough concentration of neutrons to sustain a fission reaction
  12. 21. center point of an atom holding the protons and neutrons
  13. 24. particle within an atom with a positive charge