Chemistry Crossword Puzzles: Free Printable and Online

Explore the fascinating world of Chemistry, where elements combine and react to form everything around us. It offers a rich source for challenging crossword clues, from atomic numbers to scientific terms.

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element, periodic table, chemical symbol, compound, chemical formula, physical change, chemical change

Medium · 11×11 · 14 words
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  1. 4. Inert noble gas glowing reddish-orange in high-voltage signs
  2. 6. Pure substance composed entirely of atoms with identical proton counts
  3. 7. Malleable post-transition metal designated by Sn
  4. 9. Substance that accelerates a reaction without being consumed
  5. 12. Binary compound containing oxygen bound to another element
  6. 13. Attractive forces that hold atoms together within molecules
  7. 14. Dense, toxic heavy metal bearing the symbol Pb

Down

  1. 1. Shift from a rigid solid into a fluid state by absorbing heat
  2. 2. Rapid exothermic chemical reaction between fuel and an oxidant
  3. 3. Ubiquitous compound composed of two hydrogens and one oxygen
  4. 5. Chemical change characterized by the loss of electrons
  5. 8. Outermost electrons responsible for dictating chemical reactivity
  6. 10. Undergo a rapid phase transition from liquid into vapor
  7. 11. Flaky reddish product of iron reacting with oxygen and water

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element, periodic table, chemical symbol, compound, chemical formula, physical change chemical change

Medium · 11×11 · 14 words
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  1. 1. Flaky reddish product formed by iron oxidation
  2. 3. Lustrous, conductive element located on the left and center of the table
  3. 8. Undergo a physical change from solid to liquid
  4. 9. Substance formed when two or more elements chemically unite
  5. 11. Ionic compounds produced alongside water during acid-base neutralization
  6. 13. Binary compound containing oxygen combined with another element
  7. 14. Inert noble gas famous for brilliant reddish-orange signage

Down

  1. 2. Direct physical phase change from solid to gas without melting
  2. 4. Pure chemical substance that cannot be broken down by ordinary reactions
  3. 5. Versatile tetravalent backbone of all organic molecules
  4. 6. Starting material consumed during a chemical transformation
  5. 7. Basic building block of all chemical elements
  6. 10. Dense element denoted by the symbol Pb
  7. 12. Magnetic metal whose symbol derives from ferrum

ACROSS — 20 1. Property of a solution that depends on the number of solute particles. 2. Law relating vapor pressure to mole fraction. 3. Substance dissolved in a solvent. 4. Substance that dissolves

Medium · 15×15 · 24 words
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  1. 6. Common name for sodium chloride, used to melt ice on winter roads
  2. 8. To incorporate a solid into a liquid so as to form a solution
  3. 9. Solid phase of water
  4. 11. Amount of three-dimensional space enclosed by a closed surface
  5. 13. Charged particles that form when electrolytes dissolve
  6. 14. Having a lower osmotic pressure than a surrounding fluid
  7. 17. English chemist whose law relates gas solubility to partial pressure
  8. 22. Property of a solution that depends only on the number of solute particles, not their identity
  9. 23. The most common polar solvent on Earth
  10. 24. The basic structural unit of all organisms, affected by external osmotic pressure

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  1. 1. Substance that accepts hydrogen ions in solution
  2. 2. Substance that is dissolved in a solvent to form a mixture
  3. 3. Having the same osmotic pressure as some other solution
  4. 4. Type of solution that strictly obeys Raoult's law at all concentrations
  5. 5. Thin selective barrier that allows certain molecules to pass through but blocks others
  6. 7. Statement of relation or sequence in natural phenomena that always holds true under given conditions
  7. 10. State of matter with no definite volume or shape
  8. 12. Concentration measured in moles of solute per liter of solution
  9. 15. Physically distinctive form of matter, such as solid, liquid, or gas
  10. 16. Type of osmosis used in water purification systems
  11. 18. French chemist who formulated the law relating vapor pressure to mole fraction
  12. 19. Substance that donates hydrogen ions in solution
  13. 20. Relation between two amounts showing the number of times one value contains or is contained within the other
  14. 21. Having the same quantity, value, or measure

ACROSS — 20 1. Property of a solution that depends on the number of solute particles. 2. Law relating vapor pressure to mole fraction. 3. Substance dissolved in a solvent. 4. Substance that dissolves

Medium · 11×11 · 15 words
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  1. 1. State of matter of most solvents used in colligative property experiments
  2. 6. The SI unit for amount of substance, representing Avogadro's number of particles
  3. 8. The substance that is dissolved in a solvent to form a solution
  4. 9. A thin barrier that allows only certain particles to pass through during osmosis
  5. 11. The relationship between solute and solvent quantities, such as mole fraction
  6. 13. Type of solution that obeys Raoult's law perfectly across all concentrations
  7. 14. To combine solute and solvent to form a homogeneous system
  8. 15. An atom or molecule with a net electric charge due to the loss or gain of electrons

Down

  1. 2. Solid phase of water that forms at a lower temperature when solute is added
  2. 3. To make a solution less concentrated by adding more solvent
  3. 4. To transition from a liquid to a solid state
  4. 5. The substance, typically liquid, that dissolves another substance
  5. 7. Concentration measured as moles of solute per kilogram of solvent
  6. 10. The gaseous state of a substance that is normally a liquid or solid at room temperature
  7. 12. A substance that releases hydrogen ions in water, increasing solute particle count

Chemistry

Easy · 11×11 · 15 words
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  1. 1. A substance that neutralizes an acid
  2. 4. Gas in the air that humans need to breathe
  3. 6. Precious yellow metal with the atomic symbol Au
  4. 8. An atom that has gained or lost electrons
  5. 9. The most abundant gas in Earth's atmosphere
  6. 12. Metallic element with the chemical symbol Sn
  7. 14. State of matter that keeps its shape and volume

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  1. 2. A liquid mixture where a solute is dissolved in a solvent
  2. 3. The lightest and most abundant element in the universe
  3. 5. Noble gas used to make bright glowing signs
  4. 6. State of matter with no fixed shape or volume
  5. 7. Element found in all organic life forms
  6. 10. Silvery metal that is also the name of a five cent coin
  7. 11. State of matter that flows and has a definite volume
  8. 13. Common metal used to make steel

Chemistry

Easy · 11×11 · 16 words
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  1. 3. Element with atomic number five
  2. 5. A glass container used in laboratories to hold liquids
  3. 7. Metal element used to coat cans
  4. 8. Shiny metal used for jewelry and coins
  5. 9. Negatively charged particle orbiting a nucleus
  6. 14. Shiny yellow precious metal
  7. 15. The metal element found in table salt
  8. 16. Noble gas used in bright glowing signs

Down

  1. 1. An atom with an electrical charge
  2. 2. A substance that neutralizes acids
  3. 4. A compound containing at least one oxygen atom
  4. 6. Two or more substances combined but not chemically bonded
  5. 10. State of matter that flows and has a definite volume
  6. 11. The gas we breathe to survive
  7. 12. A substance with a pH less than seven
  8. 13. The basic building blocks of all matter

Chemistry

Easy · 7×7 · 8 words
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  1. 3. Smallest unit of a chemical element
  2. 5. Pure substance consisting of only one type of atom
  3. 7. State of matter with no fixed shape or volume
  4. 8. Compound formed by the reaction of an acid and a base

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  1. 1. Substance with a pH greater than seven
  2. 2. Scientific unit used to measure the amount of a substance
  3. 4. Link between atoms in a molecule
  4. 6. Amount of matter in an object

Chemistry

Medium · 11×11 · 11 words
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  1. 1. A fluid's resistance to flowing
  2. 3. A solution that resists changes in pH
  3. 8. Having a pH value greater than seven
  4. 10. An organic compound derived from ammonia
  5. 11. The substance in a solution that does the dissolving

Down

  1. 2. A mathematical function describing the location of an electron
  2. 4. The number of moles of solute per liter of solution
  3. 5. A substance that speeds up a reaction without being consumed
  4. 6. To purify a liquid by heating and cooling
  5. 7. A six-carbon aromatic ring structure
  6. 9. A fundamental constituent of matter found in protons

Chemistry

Hard · 11×11 · 13 words
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  1. 1. A chemical shock absorber that steadfastly resists any pH change
  2. 2. 007's last name, or the force that holds molecules closely together
  3. 6. Relating to the pure energetic motion of a chemical reaction
  4. 8. Tiny glass pipe used for extremely delicate liquid transfers
  5. 10. A hot, highly ionized gas, or a crucial liquid component of blood
  6. 11. Bonding style characteristic of a chemical thief and a willing victim
  7. 12. The universe's inevitable, unstoppable descent into absolute chaos

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  1. 1. Muppet who frequently experiences explosive laboratory accidents
  2. 3. The dense central core where the real atomic weight lies
  3. 4. Occurring at regular intervals on a famous scientific table
  4. 5. Indivisible, discrete packets of pure radiant physical energy
  5. 7. Agent of change that emerges completely unscathed at the end
  6. 9. Historically considered the entirely indivisible building block

Chemistry

Medium · 11×11 · 13 words
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  1. 1. Outermost electron shell critical for forming connections
  2. 4. Probability cloud where an electron is likely to be found
  3. 5. It turns blue litmus paper red
  4. 8. Transition directly from a solid to a gaseous phase
  5. 10. Metallic mixture such as bronze, brass, or steel
  6. 12. Massive subatomic particle lacking any electrical charge
  7. 13. Tiny building block with a dense center

Down

  1. 2. Thermodynamic measure of total internal heat in a system
  2. 3. Chemical unit representing Avogadro's immense number
  3. 6. Reaction accelerator that remains unconsumed
  4. 7. Dense central core packed with the majority of atomic mass
  5. 9. It might be covalent or ionic
  6. 11. Charged particle wandering in solution
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