2.4: Chemical Reactions and enzymes

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Across
  1. 3. minimum amount of energy needed to begin a chemical reaction
  2. 5. the reactants of enzyme catalyzed reactions
  3. 6. process that changes one set of compounds into another
  4. 7. elements or compounds produced by a chemical reaction
Down
  1. 1. elements or compounds that engage in a reaction
  2. 2. biological catalyst; a protein
  3. 4. a substance that speeds up the rate of a reaction without being consumed by the reaction