Mod 3 vocab

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Across
  1. 4. basic element
  2. 6. expresses atomic & molucular
  3. 10. same mass as a proton without electric charge
  4. 12. fast-moving electron emitted by radioactive decay
  5. 14. mass of an atom of a chemical
  6. 16. Nucleus under goes spontanius transfromation
  7. 17. beam of electrons
  8. 18. charge of negative electricity
  9. 19. particles consisting of two protons and two neutrons
Down
  1. 1. equal numbers of protons different # of nuetrons
  2. 2. energy as electromagnetic waves
  3. 3. numbers of protons in a atom
  4. 5. change in the identity
  5. 6. radiation consisting of alpha particles
  6. 7. the reactants and products in radioactive decay
  7. 8. total # of protons and nuetrons
  8. 9. spontaneous disintegration of atomic nuclei
  9. 11. causes intense skin burns
  10. 13. positve charge
  11. 15. fast-moving electron emitted by radioactive decay