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