Classic Crosswords Classic Nature Expert — Set 9
🔬 Science Crossword #1
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Across
- 2. Uncharged particle in nucleus
- 6. Group of similar living organisms
- 7. One body blocking another in space
- 8. Large molecule essential for life
- 10. Center of an atom or cell
- 11. Naturally occurring inorganic solid
Down
- 1. Solid with ordered atomic structure
- 3. Pure substance on periodic table
- 4. Device for controlled nuclear reactions
- 5. Diffusion of water through a membrane
- 8. Positively charged particle
- 9. Fourth state of matter
Show answers
- 2 Across: Uncharged particle in nucleus (7)NEUTRON
- 6 Across: Group of similar living organisms (7)SPECIES
- 7 Across: One body blocking another in space (7)ECLIPSE
- 8 Across: Large molecule essential for life (7)PROTEIN
- 10 Across: Center of an atom or cell (7)NUCLEUS
- 11 Across: Naturally occurring inorganic solid (7)MINERAL
- 1 Down: Solid with ordered atomic structure (7)CRYSTAL
- 3 Down: Pure substance on periodic table (7)ELEMENT
- 4 Down: Device for controlled nuclear reactions (7)REACTOR
- 5 Down: Diffusion of water through a membrane (7)OSMOSIS
- 8 Down: Positively charged particle (6)PROTON
- 9 Down: Fourth state of matter (6)PLASMA
🔬 Science Crossword #2
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Across
- 1. Group of similar living organisms
- 3. Diffusion of water through a membrane
- 5. Large molecule essential for life
- 8. Slow-moving river of ice
- 9. Biological catalyst for reactions
- 10. Preserved remains of ancient life
Down
- 2. Wearing away of land by water or wind
- 4. Mixture producing intense heat
- 6. Center of an atom or cell
- 7. Pure substance on periodic table
Show answers
- 1 Across: Group of similar living organisms (7)SPECIES
- 3 Across: Diffusion of water through a membrane (7)OSMOSIS
- 5 Across: Large molecule essential for life (7)PROTEIN
- 8 Across: Slow-moving river of ice (7)GLACIER
- 9 Across: Biological catalyst for reactions (6)ENZYME
- 10 Across: Preserved remains of ancient life (6)FOSSIL
- 2 Down: Wearing away of land by water or wind (7)EROSION
- 4 Down: Mixture producing intense heat (7)THERMIT
- 6 Down: Center of an atom or cell (7)NUCLEUS
- 7 Down: Pure substance on periodic table (7)ELEMENT
🔬 Science Crossword #3
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Across
- 2. Large molecule essential for life
- 5. Biological catalyst for reactions
- 7. Pure substance on periodic table
- 8. Preserved remains of ancient life
- 9. Center of an atom or cell
Down
- 1. Naturally occurring inorganic solid
- 3. Substance providing immunity
- 4. Fourth state of matter
- 6. Uncharged particle in nucleus
- 7. Wearing away of land by water or wind
Show answers
- 2 Across: Large molecule essential for life (7)PROTEIN
- 5 Across: Biological catalyst for reactions (6)ENZYME
- 7 Across: Pure substance on periodic table (7)ELEMENT
- 8 Across: Preserved remains of ancient life (6)FOSSIL
- 9 Across: Center of an atom or cell (7)NUCLEUS
- 1 Down: Naturally occurring inorganic solid (7)MINERAL
- 3 Down: Substance providing immunity (7)VACCINE
- 4 Down: Fourth state of matter (6)PLASMA
- 6 Down: Uncharged particle in nucleus (7)NEUTRON
- 7 Down: Wearing away of land by water or wind (7)EROSION
🔬 Science Crossword #4
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Across
- 2. Positively charged particle
- 3. Mixture producing intense heat
- 7. Large molecule essential for life
- 8. Group of similar living organisms
- 9. Center of an atom or cell
- 10. Biological catalyst for reactions
Down
- 1. Preserved remains of ancient life
- 4. One body blocking another in space
- 5. Slow-moving river of ice
- 6. Fourth state of matter
Show answers
- 2 Across: Positively charged particle (6)PROTON
- 3 Across: Mixture producing intense heat (7)THERMIT
- 7 Across: Large molecule essential for life (7)PROTEIN
- 8 Across: Group of similar living organisms (7)SPECIES
- 9 Across: Center of an atom or cell (7)NUCLEUS
- 10 Across: Biological catalyst for reactions (6)ENZYME
- 1 Down: Preserved remains of ancient life (6)FOSSIL
- 4 Down: One body blocking another in space (7)ECLIPSE
- 5 Down: Slow-moving river of ice (7)GLACIER
- 6 Down: Fourth state of matter (6)PLASMA
🔬 Science Crossword #5
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Across
- 1. Smallest discrete unit of energy
- 4. Pure substance on periodic table
- 6. Biological catalyst for reactions
- 9. Solid with ordered atomic structure
- 10. Preserved remains of ancient life
Down
- 2. Mixture producing intense heat
- 3. Slow-moving river of ice
- 5. Uncharged particle in nucleus
- 7. One body blocking another in space
- 8. Force attracting objects to Earth
Show answers
- 1 Across: Smallest discrete unit of energy (7)QUANTUM
- 4 Across: Pure substance on periodic table (7)ELEMENT
- 6 Across: Biological catalyst for reactions (6)ENZYME
- 9 Across: Solid with ordered atomic structure (7)CRYSTAL
- 10 Across: Preserved remains of ancient life (6)FOSSIL
- 2 Down: Mixture producing intense heat (7)THERMIT
- 3 Down: Slow-moving river of ice (7)GLACIER
- 5 Down: Uncharged particle in nucleus (7)NEUTRON
- 7 Down: One body blocking another in space (7)ECLIPSE
- 8 Down: Force attracting objects to Earth (7)GRAVITY
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.
What are classic crossword puzzles?
Classic crossword puzzles use a traditional symmetric grid where solvers fill in words based on numbered clues. Each puzzle features interlocking horizontal and vertical answers that share common letters, creating an engaging word challenge.
How do I solve a classic crossword puzzle?
Start with the clues you know for certain and fill in those answers first. Use the crossing letters to help you figure out harder clues. Work through the across and down clues systematically, and don't be afraid to use a pencil so you can erase.
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Classic crossword puzzles use larger grids with more complex clues and require broader vocabulary knowledge. Quick crosswords feature smaller grids and simpler clues, making them faster to complete and more accessible for beginners.