Module 3 crossword

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Across
  1. 4. particle identical to nucleus
  2. 5. the lightest stable subatomic particle
  3. 10. elements with the same number of protons but not neurtons
  4. 14. spontaneous transformation or a nucleus
  5. 15. high-speed electrons
  6. 17. products that are part of radioactive decay
  7. 18. the nucleus of one isotope
  8. 19. stable subatomic particle with a positive charge
  9. 20. mass of atoms expressed by units
Down
  1. 1. when nucleus becomes too unstable
  2. 2. the building blocks of matter
  3. 3. subatomic particle found in the nucleus
  4. 6. spontaneous releasing of radiation
  5. 7. shortest wave length of electromagnetic radiation
  6. 8. high-speed electrons released from vacuum tube
  7. 9. splitting or joining of a nucleus
  8. 11. high energy electron emitted with radioactive decay
  9. 12. energy source traveling through space
  10. 13. numbers are arranged in order of increasing number of protons
  11. 16. the amount of water in one atom