Science Olympiad CW puzzle

123456789101112
Across
  1. 6. tan and does not dissolve in anything
  2. 7. off white and dissolves in iodine
  3. 10. fluffy and off white
  4. 11. can look like pop when wet
  5. 12. strong and smells sour
Down
  1. 1. tan and sparkly
  2. 2. turns everything brown
  3. 3. all of its shapes are different
  4. 4. crystal squares
  5. 5. sinks only in water
  6. 6. grainy and turns brown in iodine
  7. 7. clear liquid
  8. 8. thick clumpy and does not dissolve in vinegars
  9. 9. sugar sinks in vinegar and water