Puzzle Detail
Challenge Crosswords Science Hard — Set 2
🔬 Science Crossword #1
| 1 | ||||||||||||||
| 2 | 3 | |||||||||||||
| 4 | ||||||||||||||
| 5 | ||||||||||||||
| 6 | 7 | |||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
| 11 | ||||||||||||||
Across
- 2. A word related to science
- 4. Large molecule essential for life
- 5. Smallest discrete unit of energy
- 6. Pure substance on periodic table
- 8. Uncharged particle in nucleus
- 9. Biological catalyst for reactions
- 10. Fourth state of matter
- 11. A word related to science
Down
- 1. Solid with ordered atomic structure
- 3. A word related to science
- 7. Naturally occurring inorganic solid
Show answers
- 2 Across: A word related to science (8)THEROPOD
- 4 Across: Large molecule essential for life (7)PROTEIN
- 5 Across: Smallest discrete unit of energy (7)QUANTUM
- 6 Across: Pure substance on periodic table (7)ELEMENT
- 8 Across: Uncharged particle in nucleus (7)NEUTRON
- 9 Across: Biological catalyst for reactions (6)ENZYME
- 10 Across: Fourth state of matter (6)PLASMA
- 11 Across: A word related to science (8)MANDIBLE
- 1 Down: Solid with ordered atomic structure (7)CRYSTAL
- 3 Down: A word related to science (10)CRETACEOUS
- 7 Down: Naturally occurring inorganic solid (7)MINERAL
🔬 Science Crossword #2
| 1 | ||||||||||||||
| 2 | 3 | |||||||||||||
| 4 | 5 | |||||||||||||
| 6 | 7 | |||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
Across
- 2. A word related to science
- 4. Group of similar living organisms
- 6. Uncharged particle in nucleus
- 9. A word related to science
- 10. A word related to science
Down
- 1. Wearing away of land by water or wind
- 2. Biological catalyst for reactions
- 3. Positively charged particle
- 5. Large molecule essential for life
- 7. Center of an atom or cell
- 8. Device for controlled nuclear reactions
Show answers
- 2 Across: A word related to science (12)EXPERIMENTAL
- 4 Across: Group of similar living organisms (7)SPECIES
- 6 Across: Uncharged particle in nucleus (7)NEUTRON
- 9 Across: A word related to science (12)SPECIFICALLY
- 10 Across: A word related to science (10)CRETACEOUS
- 1 Down: Wearing away of land by water or wind (7)EROSION
- 2 Down: Biological catalyst for reactions (6)ENZYME
- 3 Down: Positively charged particle (6)PROTON
- 5 Down: Large molecule essential for life (7)PROTEIN
- 7 Down: Center of an atom or cell (7)NUCLEUS
- 8 Down: Device for controlled nuclear reactions (7)REACTOR
🔬 Science Crossword #3
| 1 | 2 | |||||||||||||
| 3 | ||||||||||||||
| 4 | ||||||||||||||
| 5 | ||||||||||||||
| 6 | ||||||||||||||
| 7 | ||||||||||||||
| 8 | ||||||||||||||
| 9 | 10 | |||||||||||||
| 11 |
Across
- 1. A word related to science
- 6. Pure substance on periodic table
- 8. Force attracting objects to Earth
- 9. Preserved remains of ancient life
- 10. Positively charged particle
- 11. A word related to science
Down
- 2. A word related to science
- 3. Group of similar living organisms
- 4. A word related to science
- 5. A word related to science
- 7. Smallest discrete unit of energy
Show answers
- 1 Across: A word related to science (8)THEROPOD
- 6 Across: Pure substance on periodic table (7)ELEMENT
- 8 Across: Force attracting objects to Earth (7)GRAVITY
- 9 Across: Preserved remains of ancient life (6)FOSSIL
- 10 Across: Positively charged particle (6)PROTON
- 11 Across: A word related to science (10)CRETACEOUS
- 2 Down: A word related to science (12)EXPERIMENTAL
- 3 Down: Group of similar living organisms (7)SPECIES
- 4 Down: A word related to science (10)REFRACTION
- 5 Down: A word related to science (11)APATOSAURUS
- 7 Down: Smallest discrete unit of energy (7)QUANTUM
🔬 Science Crossword #4
| 1 | 2 | |||||||||||||
| 3 | 4 | 5 | ||||||||||||
| 6 | ||||||||||||||
| 7 | ||||||||||||||
| 8 | ||||||||||||||
| 9 | 10 | |||||||||||||
| 11 | 12 | |||||||||||||
| 13 | 14 | |||||||||||||
| 15 |
Across
- 1. Mixture producing intense heat
- 7. Device for controlled nuclear reactions
- 10. Positively charged particle
- 11. A word related to science
- 13. Naturally occurring inorganic solid
- 14. Diffusion of water through a membrane
- 15. A word related to science
Down
- 2. Pure substance on periodic table
- 3. A word related to science
- 4. Large molecule essential for life
- 5. A word related to science
- 6. One body blocking another in space
- 8. Group of similar living organisms
- 9. Wearing away of land by water or wind
- 12. Fourth state of matter
Show answers
- 1 Across: Mixture producing intense heat (7)THERMIT
- 7 Across: Device for controlled nuclear reactions (7)REACTOR
- 10 Across: Positively charged particle (6)PROTON
- 11 Across: A word related to science (12)REPRODUCTION
- 13 Across: Naturally occurring inorganic solid (7)MINERAL
- 14 Across: Diffusion of water through a membrane (7)OSMOSIS
- 15 Across: A word related to science (11)APATOSAURUS
- 2 Down: Pure substance on periodic table (7)ELEMENT
- 3 Down: A word related to science (10)REFRACTION
- 4 Down: Large molecule essential for life (7)PROTEIN
- 5 Down: A word related to science (9)EVOLUTION
- 6 Down: One body blocking another in space (7)ECLIPSE
- 8 Down: Group of similar living organisms (7)SPECIES
- 9 Down: Wearing away of land by water or wind (7)EROSION
- 12 Down: Fourth state of matter (6)PLASMA
🔬 Science Crossword #5
| 1 | ||||||||||||||
| 2 | 3 | |||||||||||||
| 4 | ||||||||||||||
| 5 | ||||||||||||||
| 6 | 7 | 8 | ||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
| 11 | ||||||||||||||
| 12 | ||||||||||||||
Across
- 2. A word related to science
- 5. Solid with ordered atomic structure
- 6. A word related to science
- 10. Fourth state of matter
- 11. Group of similar living organisms
- 12. Smallest discrete unit of energy
Down
- 1. Preserved remains of ancient life
- 3. Mixture producing intense heat
- 4. Pure substance on periodic table
- 7. Large molecule essential for life
- 8. Center of an atom or cell
- 9. Slow-moving river of ice
Show answers
- 2 Across: A word related to science (11)APATOSAURUS
- 5 Across: Solid with ordered atomic structure (7)CRYSTAL
- 6 Across: A word related to science (12)EXPERIMENTAL
- 10 Across: Fourth state of matter (6)PLASMA
- 11 Across: Group of similar living organisms (7)SPECIES
- 12 Across: Smallest discrete unit of energy (7)QUANTUM
- 1 Down: Preserved remains of ancient life (6)FOSSIL
- 3 Down: Mixture producing intense heat (7)THERMIT
- 4 Down: Pure substance on periodic table (7)ELEMENT
- 7 Down: Large molecule essential for life (7)PROTEIN
- 8 Down: Center of an atom or cell (7)NUCLEUS
- 9 Down: Slow-moving river of ice (7)GLACIER
Solver Notes
1
2
3
4
5
6
7
8
9
10
11
Across
- 2. A word related to science
- 4. Large molecule essential for life
- 5. Smallest discrete unit of energy
- 6. Pure substance on periodic table
- 8. Uncharged particle in nucleus
- 9. Biological catalyst for reactions
- 10. Fourth state of matter
- 11. A word related to science
Down
- 1. Solid with ordered atomic structure
- 3. A word related to science
- 7. Naturally occurring inorganic solid
Ready to test your crossword expertise? Our challenge crossword puzzles feature advanced clues, complex grids, and tricky wordplay designed for experienced solvers seeking a real brain workout.
What are challenge crossword puzzles?
Challenge crossword puzzles are expert-level word games featuring advanced vocabulary, complex clue structures, and larger grids. They are designed for experienced crossword solvers who want to push their skills beyond standard difficulty levels.
How do I improve at solving challenge crosswords?
Build your skills gradually by starting with classic crosswords and working up to challenge level. Learn common crossword abbreviations, practice recognizing wordplay patterns, and expand your vocabulary across history, science, and general knowledge topics.
Are challenge crosswords suitable for all ages?
Challenge crosswords are best suited for adults and advanced students who already have strong crossword-solving experience. The difficult clues and specialized vocabulary assume familiarity with crossword conventions and a broad knowledge base.
How many challenge crossword puzzles are available?
Our challenge collection includes expert-level crossword puzzles covering general knowledge, history, science, and mixed topics. Each puzzle is crafted to provide a satisfying difficulty level that tests even the most seasoned crossword enthusiasts.
What is the difference between challenge and daily crosswords?
Daily crosswords offer moderate difficulty suitable for regular solving sessions, while challenge crosswords feature significantly harder clues and more obscure vocabulary. Challenge puzzles typically take longer to complete and reward deep knowledge across many subjects.