Chemistry Crossword

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Across
  1. 3. Scientist who developed the first periodic table
  2. 4. H2O is known as water. D20 is known as?
  3. 6. Element of 17th group
  4. 7. Substance that speeds up a reaction
  5. 8. Particle in nucleus are know as
  6. 11. The measure of disorder in a System
  7. 12. Type of bond in NaCl
  8. 14. Bond in which sharing of electron takes place
Down
  1. 1. Group 18 is known as?
  2. 2. Ratio of mass to Volume
  3. 5. Type of acid in vinegar
  4. 9. Atomic particle with negative charge
  5. 10. Energy required to remove an electron
  6. 13. Amount of substance SI unit