Classic Crosswords Classic Nature Expert — Set 1
🔬 Science Crossword #1
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Across
- 1. Biological catalyst for reactions
- 3. Positively charged particle
- 7. Substance providing immunity
- 9. Diffusion of water through a membrane
- 10. Uncharged particle in nucleus
Down
- 2. Naturally occurring inorganic solid
- 4. Group of similar living organisms
- 5. Device for controlled nuclear reactions
- 6. Large molecule essential for life
- 8. Wearing away of land by water or wind
Show answers
- 1 Across: Biological catalyst for reactions (6)ENZYME
- 3 Across: Positively charged particle (6)PROTON
- 7 Across: Substance providing immunity (7)VACCINE
- 9 Across: Diffusion of water through a membrane (7)OSMOSIS
- 10 Across: Uncharged particle in nucleus (7)NEUTRON
- 2 Down: Naturally occurring inorganic solid (7)MINERAL
- 4 Down: Group of similar living organisms (7)SPECIES
- 5 Down: Device for controlled nuclear reactions (7)REACTOR
- 6 Down: Large molecule essential for life (7)PROTEIN
- 8 Down: Wearing away of land by water or wind (7)EROSION
🔬 Science Crossword #2
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Across
- 1. Slow-moving river of ice
- 4. One body blocking another in space
- 5. Large molecule essential for life
- 8. Fourth state of matter
- 9. Diffusion of water through a membrane
- 10. Pure substance on periodic table
Down
- 2. Biological catalyst for reactions
- 3. Naturally occurring inorganic solid
- 6. Uncharged particle in nucleus
- 7. Solid with ordered atomic structure
- 8. Positively charged particle
Show answers
- 1 Across: Slow-moving river of ice (7)GLACIER
- 4 Across: One body blocking another in space (7)ECLIPSE
- 5 Across: Large molecule essential for life (7)PROTEIN
- 8 Across: Fourth state of matter (6)PLASMA
- 9 Across: Diffusion of water through a membrane (7)OSMOSIS
- 10 Across: Pure substance on periodic table (7)ELEMENT
- 2 Down: Biological catalyst for reactions (6)ENZYME
- 3 Down: Naturally occurring inorganic solid (7)MINERAL
- 6 Down: Uncharged particle in nucleus (7)NEUTRON
- 7 Down: Solid with ordered atomic structure (7)CRYSTAL
- 8 Down: Positively charged particle (6)PROTON
🔬 Science Crossword #3
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Across
- 6. Preserved remains of ancient life
- 7. Positively charged particle
- 8. Uncharged particle in nucleus
- 9. Force attracting objects to Earth
Down
- 1. Fourth state of matter
- 2. Wearing away of land by water or wind
- 3. Mixture producing intense heat
- 4. Slow-moving river of ice
- 5. Diffusion of water through a membrane
- 7. Large molecule essential for life
Show answers
- 6 Across: Preserved remains of ancient life (6)FOSSIL
- 7 Across: Positively charged particle (6)PROTON
- 8 Across: Uncharged particle in nucleus (7)NEUTRON
- 9 Across: Force attracting objects to Earth (7)GRAVITY
- 1 Down: Fourth state of matter (6)PLASMA
- 2 Down: Wearing away of land by water or wind (7)EROSION
- 3 Down: Mixture producing intense heat (7)THERMIT
- 4 Down: Slow-moving river of ice (7)GLACIER
- 5 Down: Diffusion of water through a membrane (7)OSMOSIS
- 7 Down: Large molecule essential for life (7)PROTEIN
🔬 Science Crossword #4
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Across
- 1. Large molecule essential for life
- 4. Device for controlled nuclear reactions
- 5. Center of an atom or cell
- 7. Preserved remains of ancient life
- 8. Biological catalyst for reactions
- 9. Diffusion of water through a membrane
- 10. Smallest discrete unit of energy
Down
- 2. Wearing away of land by water or wind
- 3. Substance providing immunity
- 6. Group of similar living organisms
- 8. Pure substance on periodic table
Show answers
- 1 Across: Large molecule essential for life (7)PROTEIN
- 4 Across: Device for controlled nuclear reactions (7)REACTOR
- 5 Across: Center of an atom or cell (7)NUCLEUS
- 7 Across: Preserved remains of ancient life (6)FOSSIL
- 8 Across: Biological catalyst for reactions (6)ENZYME
- 9 Across: Diffusion of water through a membrane (7)OSMOSIS
- 10 Across: Smallest discrete unit of energy (7)QUANTUM
- 2 Down: Wearing away of land by water or wind (7)EROSION
- 3 Down: Substance providing immunity (7)VACCINE
- 6 Down: Group of similar living organisms (7)SPECIES
- 8 Down: Pure substance on periodic table (7)ELEMENT
🔬 Science Crossword #5
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Across
- 3. Solid with ordered atomic structure
- 7. Positively charged particle
- 9. Biological catalyst for reactions
- 10. Uncharged particle in nucleus
- 11. Fourth state of matter
Down
- 1. Force attracting objects to Earth
- 2. Wearing away of land by water or wind
- 4. One body blocking another in space
- 5. Large molecule essential for life
- 6. Naturally occurring inorganic solid
- 8. Pure substance on periodic table
Show answers
- 3 Across: Solid with ordered atomic structure (7)CRYSTAL
- 7 Across: Positively charged particle (6)PROTON
- 9 Across: Biological catalyst for reactions (6)ENZYME
- 10 Across: Uncharged particle in nucleus (7)NEUTRON
- 11 Across: Fourth state of matter (6)PLASMA
- 1 Down: Force attracting objects to Earth (7)GRAVITY
- 2 Down: Wearing away of land by water or wind (7)EROSION
- 4 Down: One body blocking another in space (7)ECLIPSE
- 5 Down: Large molecule essential for life (7)PROTEIN
- 6 Down: Naturally occurring inorganic solid (7)MINERAL
- 8 Down: Pure substance on periodic table (7)ELEMENT
Solver Notes
Enjoy our collection of classic crossword puzzles featuring traditional grid layouts and a wide range of topics. Each puzzle is free to download, print, and solve at your own pace.
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