Chapter 7 vocab

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Across
  1. 4. minimum amount of energy needed to start a chemical reaction.
  2. 5. chemical reaction in which heat energy is absorbed
  3. 6. a substance that enters into and is altered in the course of a chemical reaction.
  4. 8. the speed at which a chemical reaction proceeds.
  5. 10. chemical reaction in which heat energy is released
  6. 11. a representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product.
Down
  1. 1. describes how much solute is present
  2. 2. substance that speeds up a chemical reaction but is not used up itself or permanently charged
  3. 3. a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products
  4. 7. a substance that decreases the rate of, or prevents, a chemical reaction.
  5. 9. substance that forms as a result of a chemical reaction
  6. 12. catalyst that are large protein molecules