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