Chemistry Technology

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Across
  1. 5. Tool used to put out small fires
  2. 7. Equipment worn to protect workers
  3. 9. A potential source of danger
  4. 10. Atoms of the same element with different masses
  5. 11. Regular check to ensure equipment safety
  6. 13. Substance that speeds up a chemical reaction
Down
  1. 1. Following all safety rules and laws
  2. 2. A long-chain molecule formed from repeating units
  3. 3. Devices that warn about emergencies
  4. 4. Technology working at the molecular scale
  5. 6. Process of breaking compounds using electric current
  6. 8. Immediate help given after an accident
  7. 12. Gradual destruction of metals by chemical processes