Perfect 10

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Across
  1. 3. substance that is present at the end of a chemical reaction
  2. 6. a substance which slows down or prevents a particular chemical reaction
  3. 8. the action or process of replacing someone or something
  4. 9. occurs when two or more reactants combine to form a single product
Down
  1. 1. a numerical or constant quantity placed before and multiplying the variable
  2. 2. a substance that takes part in and undergoes change during a reaction.
  3. 4. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  4. 5. cause (a substance) to be deposited in solid form from a solution
  5. 7. the state or process of rotting