Periodic Table

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Across
  1. 4. ELECTRONS-LOCATED IN THE OUTERMOST ENERGY LEVEL
  2. 8. BE BROKEN INTO SIMPLER SUBUSTANCES
  3. 9. THAT FORMS BONDS WITH OTHER ELEMENTS
  4. 12. TO REACT CHEMICALLY
  5. 14. VERTICAL COLUMN
  6. 16. NOT CONDUCT HEAT AND ELECTRICITY
  7. 17. HEAT AND ELECTRICITY
  8. 19. CLOUD-REGION SURROUNDING THE NUCLUES
  9. 21. SMALLEST UNIT OF AN ELEMENT
Down
  1. 1. BOND-FORMED WHEN TWO ATOMS SHARE VALENCE ELECTRONS
  2. 2. TABLE-A CHART THAT ORGANIZES INFORMATION
  3. 3. HORIZONTAL ROW
  4. 5. MASS AND VOLUME
  5. 6. SYMBOL-CPITAL LETTER FOLLOWED BY LOWER CASE LETTER
  6. 7. OF METAL AND NONMETAL
  7. 10. BOND-FORMED BY THE TRANSFERNOF ELECTRONS
  8. 11. GAINED OR LOST ONE OR MORE ELECTRONS
  9. 13. NUMBER-THE NUMBER OF PROTONS CONTAINED IN EACH NUCLEUS
  10. 15. SMALLEST UNIT OF AN COMPOUND
  11. 18. ELEMENT-ATOMIC NUMBER 93 AND UP
  12. 20. LAW OF CONSERVATION OF MATTER-SCIENTIFIC LAW