Chain Crosswords Short Science Hard — Set 1

Hard 15×15 Set 1
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12
Across
  1. 3. Force attracting objects to Earth
  2. 6. A word related to science
  3. 8. Naturally occurring inorganic solid
  4. 10. A word related to science
  5. 11. Uncharged particle in nucleus
  6. 12. A word related to science
Down
  1. 1. Positively charged particle
  2. 2. Fourth state of matter
  3. 4. Preserved remains of ancient life
  4. 5. A word related to science
  5. 7. Large molecule essential for life
  6. 8. A word related to science
  7. 9. One body blocking another in space