Atomic Structure & The Periodic Table

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Across
  1. 2. rows across the periodic table
  2. 3. "map" of all of the elements
  3. 5. an atom that has a +/- charge on it
  4. 7. a change during a chemical reaction where a new substance is made
  5. 12. the center of the atom
  6. 14. negatively charged particle that orbits the nucleus of the atoms
Down
  1. 1. the number of protons and neutrons in an atom
  2. 3. a change in a substance where the identity of the substance is not changed
  3. 4. an atom of the same element with a different number of neutrons
  4. 6. one or two letters which abbreviate the name of an element
  5. 8. the basic substances that make up all matter
  6. 9. the number of protons in an atom of an element
  7. 10. columns up and down on the periodic table
  8. 11. this particle in the atom has no charge
  9. 13. positively charged particle in the nucleus of an atom