Scientific Crossword

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Across
  1. 1. / a particle having non-zero net electrical change
  2. 6. / Tony Stark or ___ man
  3. 8. / smallest particle of an element
  4. 9. / the man who discovered phosphorus
  5. 13. / atomic number 39
  6. 16. / atomic number 8
  7. 17. / how the periodic table was completed through
  8. 19. / atomic number 1
  9. 21. / atomic number 57
  10. 24. / weighted the elements
  11. 25. / atomic number 69
  12. 28. / named after the most well known theoretical physicist
  13. 29. / developed and originated the periodic table
Down
  1. 2. / atomic number 10
  2. 3. / the urine became ____
  3. 4. / color of one peso
  4. 5. / first name of the person that worked with Dmitri
  5. 7. / used as wires because of its cheapness
  6. 9. / Highly reactive non-metal
  7. 10. / commonly used in expensive jewelry
  8. 11. / atomic number 21
  9. 12. / chemical element which differ in neutron number
  10. 14. / Periodic ___
  11. 15. / consists of two or more atoms combined
  12. 18. / atomic number 12
  13. 20. / atomic number 59
  14. 22. / atomic number 17
  15. 23. / describes a sample of matter
  16. 26. / what was used to discover phosphorus
  17. 27. / measure of the amount of matter