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