Chemistry

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Across
  1. 3. Reacts violently with most nonmetals.
  2. 4. Group 17.
  3. 7. Only metal that is liquid at room temperature.
  4. 9. Vertical row.
  5. 10. Mettaliod used in electronics.
  6. 13. have colors when excited.
  7. 14. Year first periodic table was published.
  8. 18. The first periodic table was set up by ______ ____.
  9. 19. Horizontal row.
  10. 20. Group 18.
  11. 22. Russian Chemist who made first periodic table.
  12. 23. most reactive metals.
  13. 24. Lightest alkali metal.
  14. 25. Used in many lightup signs.
  15. 26. Element with symbol Fe.
  16. 27. Element symbol K.
Down
  1. 1. First element in the Periodic Table.
  2. 2. Bad conductors of heat and electricity.
  3. 5. All are radioactive.
  4. 6. Only nonmetal that is liquid at room temperature.
  5. 7. Good conductors of heat and electricity.
  6. 8. Gas essential for combustion.
  7. 11. Element symbol Ca.
  8. 12. Jewelry metal with atomic number 47
  9. 15. Most abundant gas in Earth's atmosphere.
  10. 16. Coinage metal with atomic number 29
  11. 17. Has properties of metals and nonmetals.
  12. 21. Soft yellow nonmetal found in volcanic material.