Chemical reactions

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Across
  1. 1. a substance made of 2 or more identical molecules
  2. 3. when new substances form they get new
  3. 4. a byproduct of a reaction that makes it warm
  4. 6. a reaction requiring heat
  5. 11. product of Magnesium and Oxygen
  6. 12. a type of reaction that you can reverse
Down
  1. 2. when oxygen and water combines with metal naturally over time and turns metal to rust
  2. 5. the smallest unit
  3. 6. a reaction that gives out heat
  4. 7. anything speeding up the chemical reaction
  5. 8. which type of reaction is irreversible
  6. 9. what you need to get molecules moving
  7. 10. when you mix highly unstable products this could happen