Chain Crosswords Short Science Hard — Set 3

Hard 15×15 Set 3
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9
Across
  1. 1. A word related to science
  2. 3. Biological catalyst for reactions
  3. 4. Mixture producing intense heat
  4. 5. Fourth state of matter
  5. 7. Naturally occurring inorganic solid
  6. 8. A word related to science
  7. 9. Slow-moving river of ice
Down
  1. 2. Solid with ordered atomic structure
  2. 3. A word related to science
  3. 6. Group of similar living organisms