Endothermic & Exothermic Reactions 3

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Across
  1. 1. Starting substance in a reaction
  2. 3. Reaction that occurs naturally without external energy
  3. 5. Reaction that can go in both directions
  4. 8. Reaction that cannot go backward
  5. 10. Substance formed after a chemical reaction
Down
  1. 2. Gas turning to liquid, releasing heat
  2. 4. State where forward and reverse reactions are equal
  3. 6. Solid changing directly to gas
  4. 7. Liquid turning to gas, absorbing heat
  5. 9. Measure of disorder or randomness