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Across
- 2. Naturally occurring inorganic solid
- 5. Device for controlled nuclear reactions
- 7. A word related to science
- 8. Positively charged particle
- 9. Substance providing immunity
- 10. A word related to science
Down
- 1. Pure substance on periodic table
- 3. Biological catalyst for reactions
- 4. Large molecule essential for life
- 6. Uncharged particle in nucleus
- 7. Solid with ordered atomic structure
- 8. Fourth state of matter