The Progress of Chemical Reactions

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Across
  1. 1. The minimum amount of energy required to initiate a chemical reaction.
  2. 5. A reaction that releases energy (usually heat) into the surroundings; products have less energy than reactants.
  3. 6. The specific reactant molecule that an enzyme acts upon.
  4. 7. The specific region on an enzyme where the substrate binds and the reaction takes place.
  5. 8. A reaction that occurs through a series of simpler steps known as elementary steps.
  6. 11. A reaction that occurs in a single event; reactants convert directly to products without intermediates.
  7. 12. A process in which one or more substances are converted into different substances by breaking and forming chemical bonds.
  8. 13. The starting substances in a chemical reaction, written on the left side of a chemical equation.
  9. 14. A theoretical representation of the energy pathway as reactants are transformed into products.
Down
  1. 2. A high-energy, unstable state during a chemical reaction where old bonds are breaking and new bonds are forming.
  2. 3. A substance that increases the rate of a chemical reaction by lowering the activation energy without being consumed.
  3. 4. The sequence of individual steps by which a chemical reaction occurs.
  4. 9. A reaction that absorbs energy from the surroundings; products have more energy than reactants.
  5. 10. The substances formed as a result of a chemical reaction, written on the right side of a chemical equation.
  6. 15. A biological catalyst, usually a protein, that speeds up specific chemical reactions in living organisms.