Perfect 10 Vocabulay Crossword

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Across
  1. 4. cause typically suddenly
  2. 7. Principal of classical physics
  3. 8. symbolic representation of chemical reation
  4. 9. Substances that increase rate of chemical reaction
Down
  1. 1. system which components
  2. 2. process that involves rearrangement
  3. 3. substances that takes part in undergoes
  4. 5. State/process of rotting
  5. 6. Action/process of replacing someone or something