Atoms and Matter

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Across
  1. 3. The sum of the protons and neutrons.
  2. 7. The number of protons/electrons.
  3. 10. Number of electrons in the first outer shell.
  4. 11. Atomic Number for Potassium (K).
  5. 13. Found on the periodic table.
  6. 14. Chart that organizes the elements.
Down
  1. 1. My atomic number is 86.
  2. 2. Electrons that are found in the outer most shell.
  3. 4. Neutral molecules in the nucleus.
  4. 5. Smallest unit of matter.
  5. 6. Positive charged molecule in the nucleus.
  6. 8. Anything that has mass and volume.
  7. 9. Model used to model the atomic structure.
  8. 12. Negatively charged molecule.
  9. 15. My chemical symbol is Sn.
  10. 16. Number of electrons in the second outer shell.