Chapter 8 Rates of reaction

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Across
  1. 3. a measure of how fast a reaction takes place
  2. 5. the attachment of molecules to a solid surface
  3. 6. protein molecules that act as biological catalyst
  4. 7. the industrial manufacture of sulfuric acid using the raw materials sulfur and air
Down
  1. 1. a theory that states that a chemical reaction takes place when particles of the reactants collide with sufficient energy to initiate the reaction
  2. 2. the industrial manufacture of ammonia by the reaction of nitrogen with hydrogen in the presence of an iron catalyst
  3. 4. a substance that increase the rate of a chemical reaction but itself remains unchanged at the end of the reaction