Chemistry Vocab

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Across
  1. 3. the third energy level can hold ___ electrons
  2. 4. atomic mass is 4.0
  3. 6. atomic number is 14
  4. 8. right side of the periodic table
  5. 9. electrons arrange into rings called...
  6. 11. neutral charge
  7. 14. what do you use to weigh atoms
  8. 15. the stair step on the periodic table
  9. 17. surrounds the nucleus
  10. 19. the first energy level can hold ___ electrons
  11. 20. left side of the periodic table
Down
  1. 1. how much does an electron weigh
  2. 2. go from left to right in rows
  3. 5. positive charge
  4. 7. determine reactivity
  5. 10. run up and down in columns
  6. 12. the middle of an atom
  7. 13. negative charge
  8. 16. smallest part of an atom
  9. 18. how much protons and neutrons weigh