The Periodic Table

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Across
  1. 6. The mass of a molecule.
  2. 9. Conductive and malleable. 91 out of the 118 elements.
  3. 11. Atomic numbers 89 through 103.
  4. 13. Columns in the periodic table.
  5. 15. The number of protons in the nucleus of an atom.
  6. 18. The element's term.
  7. 19. The shine of an object.
Down
  1. 1. This state of matter is in between the liquid and plasma states.
  2. 2. Potassium, Oxygen, Chlorine, etc.
  3. 3. The flexibility of an object.
  4. 4. Atomic numbers 57 through 71. Often known as the rare earth elements.
  5. 5. The energy of an object.
  6. 7. He, Fe, Si, Cl, etc.
  7. 8. Pb, atomic number of 82.
  8. 10. Zn, atomic number of 30.
  9. 12. H2O, CO2, NaCl, atc.
  10. 14. Rows in the periodic table.
  11. 16. Easily vaporized and low elasticity. 17 out of the 118 elements.
  12. 17. A mixture of metals and nonmetals. 6 out of the 118 elements.