Periodic Table

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Across
  1. 1. a table of chemical elements aranged in a certain order
  2. 4. an area of science that studies the properties and behavior
  3. 7. where things are in the atom
  4. 8. the small dense region consisting of protons and neutrons
  5. 9. the electrical attraction between a negative ion and positive ion
  6. 13. can bond with other atoms
Down
  1. 2. a substance that cannot be broken down more simply
  2. 3. the unequal sharing of electrons between atoms
  3. 5. character that represents the elements
  4. 6. columns have the same number of electrons on the outer orbital
  5. 10. a pair of electrons shared by two atoms
  6. 11. rows that have the same number of atomic orbitals
  7. 12. the total mass of protons and neutrons
  8. 14. Basic unit of a chemical element