Chemical properties of matter

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Across
  1. 2. Verticals in the periodic table
  2. 3. An element with an atomic number of 51
  3. 6. Period number of uranium
  4. 9. Period number of potassium
  5. 10. Made up of elements chemically combined together through a chemical reaction
  6. 13. Group number of iron
  7. 14. Group 13 period 2 in the periodic table
  8. 15. Substances combined only through physical means
  9. 16. Group 2 Period 4 in the periodic table
Down
  1. 1. Elements that occur as gases or liquids and not capable of conducting electricity
  2. 4. Horizontals in the periodic table
  3. 5. Group 1 Period 1 in the periodic table
  4. 7. Basic unit of matter
  5. 8. An element with 79 electrons
  6. 11. An element with 16 protons
  7. 12. Period number of rubidium
  8. 15. Elements which are good conductors