Biology A Unit 2 Lesson 6: Chemical Reactions

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Across
  1. 3. a specialized protein that speeds up a chemical reaction
  2. 4. a substance involved in a chemical reaction
  3. 5. the energy input required to start a chemical reaction (2 words)
  4. 6. a model of a chemical reaction (2 words)
  5. 7. the output of a chemical reaction
  6. 8. a change that releases more energy than it absorbs
Down
  1. 1. a process in which the chemical arrangement of a substance changes (2 words)
  2. 2. a change that absorbs more energy than it releases