Fire and Explosion

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Across
  1. 3. a gas that has no colour, smells strong and mixes with water.
  2. 7. something breaking apart or exploding
  3. 8. electrical tools or wiring.
  4. 9. officially let someone do something.
  5. 10. Be safe from harm or not likely to get hurt.
Down
  1. 1. a person in charge of others
  2. 2. easily set on fire.
  3. 4. a plan or rules for how something is done.
  4. 5. run by a machine
  5. 6. a situation that needs quick action.