Classic Crosswords Classic Nature Hard — Set 3
🔬 Science Crossword #1
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Across
- 1. One body blocking another in space
- 4. A word related to science
- 5. Smallest discrete unit of energy
- 7. Uncharged particle in nucleus
- 9. Pure substance on periodic table
- 10. Preserved remains of ancient life
- 11. Center of an atom or cell
Down
- 2. Fourth state of matter
- 3. Naturally occurring inorganic solid
- 6. Solid with ordered atomic structure
- 8. Biological catalyst for reactions
Show answers
- 1 Across: One body blocking another in space (7)ECLIPSE
- 4 Across: A word related to science (6)MAGGOT
- 5 Across: Smallest discrete unit of energy (7)QUANTUM
- 7 Across: Uncharged particle in nucleus (7)NEUTRON
- 9 Across: Pure substance on periodic table (7)ELEMENT
- 10 Across: Preserved remains of ancient life (6)FOSSIL
- 11 Across: Center of an atom or cell (7)NUCLEUS
- 2 Down: Fourth state of matter (6)PLASMA
- 3 Down: Naturally occurring inorganic solid (7)MINERAL
- 6 Down: Solid with ordered atomic structure (7)CRYSTAL
- 8 Down: Biological catalyst for reactions (6)ENZYME
🔬 Science Crossword #2
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Across
- 2. Device for controlled nuclear reactions
- 8. Solid with ordered atomic structure
- 9. Uncharged particle in nucleus
- 10. Fourth state of matter
Down
- 1. A word related to science
- 3. Slow-moving river of ice
- 4. Large molecule essential for life
- 5. Group of similar living organisms
- 6. Positively charged particle
- 7. Center of an atom or cell
Show answers
- 2 Across: Device for controlled nuclear reactions (7)REACTOR
- 8 Across: Solid with ordered atomic structure (7)CRYSTAL
- 9 Across: Uncharged particle in nucleus (7)NEUTRON
- 10 Across: Fourth state of matter (6)PLASMA
- 1 Down: A word related to science (12)BENEFICIALLY
- 3 Down: Slow-moving river of ice (7)GLACIER
- 4 Down: Large molecule essential for life (7)PROTEIN
- 5 Down: Group of similar living organisms (7)SPECIES
- 6 Down: Positively charged particle (6)PROTON
- 7 Down: Center of an atom or cell (7)NUCLEUS
🔬 Science Crossword #3
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Across
- 4. Naturally occurring inorganic solid
- 6. A word related to science
- 8. Substance providing immunity
- 9. A word related to science
- 10. One body blocking another in space
- 11. Pure substance on periodic table
Down
- 1. A word related to science
- 2. A word related to science
- 3. A word related to science
- 5. Slow-moving river of ice
- 7. Large molecule essential for life
Show answers
- 4 Across: Naturally occurring inorganic solid (7)MINERAL
- 6 Across: A word related to science (8)MANDIBLE
- 8 Across: Substance providing immunity (7)VACCINE
- 9 Across: A word related to science (6)MAGGOT
- 10 Across: One body blocking another in space (7)ECLIPSE
- 11 Across: Pure substance on periodic table (7)ELEMENT
- 1 Down: A word related to science (12)COMPOUND EYE
- 2 Down: A word related to science (8)PARASITE
- 3 Down: A word related to science (9)NOCTURNAL
- 5 Down: Slow-moving river of ice (7)GLACIER
- 7 Down: Large molecule essential for life (7)PROTEIN
🔬 Science Crossword #4
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Across
- 4. Positively charged particle
- 6. A word related to science
- 8. Mixture producing intense heat
- 9. A word related to science
- 10. Uncharged particle in nucleus
Down
- 1. Preserved remains of ancient life
- 2. Large molecule essential for life
- 3. Substance providing immunity
- 5. A word related to science
- 7. One body blocking another in space
Show answers
- 4 Across: Positively charged particle (6)PROTON
- 6 Across: A word related to science (10)BENEFICIAL
- 8 Across: Mixture producing intense heat (7)THERMIT
- 9 Across: A word related to science (8)PARASITE
- 10 Across: Uncharged particle in nucleus (7)NEUTRON
- 1 Down: Preserved remains of ancient life (6)FOSSIL
- 2 Down: Large molecule essential for life (7)PROTEIN
- 3 Down: Substance providing immunity (7)VACCINE
- 5 Down: A word related to science (6)MAGGOT
- 7 Down: One body blocking another in space (7)ECLIPSE
🔬 Science Crossword #5
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Across
- 3. Diffusion of water through a membrane
- 4. Substance providing immunity
- 8. A word related to science
- 10. A word related to science
- 11. Positively charged particle
Down
- 1. Preserved remains of ancient life
- 2. Center of an atom or cell
- 5. Solid with ordered atomic structure
- 6. Slow-moving river of ice
- 7. A word related to science
- 9. Wearing away of land by water or wind
Show answers
- 3 Across: Diffusion of water through a membrane (7)OSMOSIS
- 4 Across: Substance providing immunity (7)VACCINE
- 8 Across: A word related to science (8)PARASITE
- 10 Across: A word related to science (5)APHID
- 11 Across: Positively charged particle (6)PROTON
- 1 Down: Preserved remains of ancient life (6)FOSSIL
- 2 Down: Center of an atom or cell (7)NUCLEUS
- 5 Down: Solid with ordered atomic structure (7)CRYSTAL
- 6 Down: Slow-moving river of ice (7)GLACIER
- 7 Down: A word related to science (9)NOCTURNAL
- 9 Down: Wearing away of land by water or wind (7)EROSION
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.
Who are classic crosswords best suited for?
Classic crossword puzzles are ideal for adults and older students who enjoy vocabulary challenges and general knowledge trivia. They work well for solo relaxation, classroom activities, or group puzzle-solving sessions.
How many classic crossword puzzles are available?
Our library includes dozens of classic crossword puzzles spanning topics like general knowledge, geography, history, and sports. New puzzles are added regularly so you always have fresh challenges to print and solve.
What is the difference between classic and quick crosswords?
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.