Periodic Table Crossword

Edit Answers
1234567891011121314151617181920
Across
  1. 4. The Chemical Symbol for this is N.
  2. 6. A substance almost as hard a diamond, but very brittle.
  3. 8. The Russian Chemist that discovered a pattern to the elements.
  4. 11. this is what each element is identified by.
  5. 13. This group has 4 electrons in its outer level.
  6. 14. Also known as semiconductors.
  7. 16. The symbol for this is Na.
  8. 18. The element in period 1.
Down
  1. 1. An element commonly used in thermometers.
  2. 2. Group 17.
  3. 3. The hardest material known.
  4. 5. More than half of the these are gases at room temperature.
  5. 7. A shiny, brittle substance that can be smashed into a powder.
  6. 9. Halogens have this many electrons in its outer level.
  7. 10. The most reactive metals.
  8. 12. This describes something that occurs or repeats at regular intervals.
  9. 15. Each horizontal row of elements.
  10. 17. Good conductors or electric currents.
  11. 18. The symbol for Mercury.
  12. 19. Each vertical column of elements.
  13. 20. The type of gases in the last group.