4.2.1 Key terms crossword puzzle.

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Across
  1. 4. respiration The process by which cells break down glucose to produce energy.
  2. 10. reaction A reaction where ions exchange partners to form new compounds.
  3. 12. change A change in which new substances with different properties are formed.
  4. 14. reaction A reaction in which two compounds exchange ions to form two new compounds.
  5. 15. reaction A reaction where two or more substances combine to form a new compound.
  6. 16. A mixture of two or more substances not chemically combined.
  7. 18. Describes a substance that does not dissolve in a solvent.
  8. 19. Forms when two solutions react to produce an insoluble solid.
Down
  1. 1. reaction Type of reaction where a single compound breaks down into simpler substances.
  2. 2. a substance that takes part in and undergoes change during a reaction.
  3. 3. Describes a substance that can be dissolved in a solvent.
  4. 5. Represents the physical form of matter (solid, liquid, gas).
  5. 6. Starting substances in a chemical reaction.
  6. 7. reaction A reaction in which two compounds exchange ions to form two new compounds.
  7. 8. change A change in which no new substance is formed.
  8. 9. formation reaction A reaction that produces gas as a product.
  9. 11. equation Represents a chemical reaction using symbols and formulas.
  10. 13. When a solid substance disperses into a liquid to form a solution.
  11. 17. The maximum amount of solute that can dissolve in a solvent at a given temperature.