Chemistry Crossword

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Across
  1. 1. Pronto (anag.)
  2. 5. Atom with a charge
  3. 6. Six electrons make a ______ bond
  4. 9. ______ Compounds have two elements
  5. 12. A cyclic surface
  6. 16. A positive ion
  7. 17. Smallest unit of an element
  8. 18. Element in the upper left corner of the periodic table
  9. 20. Carbon-12, 13 and 14
  10. 21. Ancient Greek word for fossilized resin
  11. 22. Greek letter for wavelength
Down
  1. 2. Eight electrons
  2. 3. Amedeo’s quantity of atoms (or anything)
  3. 4. Below a snail
  4. 7. Neon Scare (anag.)
  5. 8. Inert Element
  6. 10. The principle of building-up
  7. 11. the prefix for oxygen in the name of the gas produced from soda
  8. 13. Triangular Pyramid
  9. 14. Release hydrogen ions in water
  10. 15. A + B -> AB
  11. 19. Light with wavelength 525nm