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