Atoms

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Across
  1. 3. Electrons have different _______levels.
  2. 5. The atomic __________is the number of protons & n.
  3. 7. The atomic mass of carbon.
  4. 9. The Periodic Table of _______has 103 boxes.
  5. 10. There are ___ colored regions on the table.
  6. 13. In the 1800's ______ Dalton came up with a theory.
  7. 15. Everything is made of ___________.
  8. 16. Positively charged particle.
  9. 17. An atom's center or the atom's brain.
Down
  1. 1. A subatomic particle that has no charge.
  2. 2. The Greek word "atomos" means _________.
  3. 4. The molecule H2O is ___________.
  4. 6. Every element in the ________is in a box.
  5. 8. A negatively charged particle.
  6. 11. The Greek who named atoms.
  7. 12. Electrons,neu.& protons are ____particles.
  8. 14. several atoms bonded together are called ____