DHT's Crazy Chemistry Crossword

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Across
  1. 2. Periodic Table element known as Superman's ultimate weakness.
  2. 5. The smallest particle of an element
  3. 6. Element with the periodic table symbol "Sb"
  4. 7. Element with the periodic table symbol "H"
  5. 10. Chemical name for Water.
  6. 12. An atom or a group of atoms that carries an electric charge
  7. 13. A negative ion; an atom or goup of atoms that has gained one or more electrons
  8. 14. The only periodic table element that does not solidify
  9. 15. A subatomic particle with a positive charge
  10. 16. The required eyewear when a chem lab is going on!
  11. 17. The first name of Mr. Erlenmeyer, after whom a popular laboratory flask was named.
  12. 18. The only metal that remains liquid at room temperature
Down
  1. 1. The most common gas in the Earth's atmosphere
  2. 3. A chemical process where plants, algae and cyanobacteria use energy from the sun to convert carbon dioxide into sugar.
  3. 4. What humans breathe out
  4. 8. This well-known feline brings smiles to every chemists face when seen.
  5. 9. Large pincers made of welded steel often used to manipulate hot objects.
  6. 10. Russian chemist credited with being the creator of the first version of the periodic table of the elements.
  7. 11. Helium, Xenon and krypton belong in this group of elements