Nuclear Fusion and Fission

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Across
  1. 2. the number of protons in the nucleus of an element
  2. 4. the mid range particles that can be stopped by wood, glass or water
  3. 7. the chart that shows the elements and their atomic number
  4. 9. the element that makes us "organic"
  5. 10. the process of splitting the nucleus of an atom
  6. 14. the element discovered by Marie Curie that caused her death
  7. 15. has a positive charge in the nucleus
  8. 17. the Russian nuclear power plant that melted down in 1986
  9. 18. the element that is put into balloons to make them float
Down
  1. 1. the breakdown of an atom over time where half is gone
  2. 3. the waves that are most dangerous when released; cause deep tissue burns and reproduction issues
  3. 5. has a negative charge and is not located in the nucleus
  4. 6. the shortest traveling particles that can be stopped by skin or paper
  5. 8. element number 11 on the periodic table
  6. 11. the element that is added to our salt
  7. 12. has a neutral charge in the nucleus
  8. 13. element number 1 on the periodic table
  9. 16. the process of bringing many nuclei together to make an atom heavier; occurs in the sun