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