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