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