Atoms, Ions

1234567891011121314151617
Across
  1. 3. where the electrons are
  2. 5. has a negative charge
  3. 7. it is electrically neutral
  4. 8. when an atom loses one more electron, it becomes a __________
  5. 11. when an atom gains one more electron, it becomes a ___________.
  6. 13. the total number of protons and neutrons
  7. 14. number of protons is ______ to number of electrons in an atom
  8. 16. the ion is Ag+
  9. 17. where the protons and neutrons are
Down
  1. 1. the number of protons
  2. 2. atoms with the same number of protons but different number of neutrons
  3. 4. has no charge
  4. 6. another term for proton number
  5. 9. the average mass of the isotopes of an element
  6. 10. the symbol is Au
  7. 12. it is electrically charged
  8. 15. has a negative charge