dos and don'ts

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Across
  1. 5. work must be done under supervision
  2. 6. check equipment for cracks before use
  3. 10. protective eyewear that must be worn at all times
  4. 11. never taste a chemical in the laboratory
  5. 12. protective garment worn to protect clothing and skin
  6. 15. dispose of chemical waste in the correct container
  7. 17. understand all safety symbols before starting work
  8. 19. wash and return all apparatus after use
  9. 21. never use cracked or broken glassware
Down
  1. 1. never smell a gas directly with your nose
  2. 2. point test tubes away from yourself and others
  3. 3. never return unused chemicals to their original bottles
  4. 4. hand protection worn when handling chemicals
  5. 7. tell the teacher immediately about accidents or breakages
  6. 8. read and follow all written procedures carefully
  7. 9. clean up immediately and report to the teacher
  8. 13. keep the workbench clean and tidy at all times
  9. 14. never leave a Bunsen burner unattended
  10. 15. hands thoroughly after handling chemicals
  11. 16. long hair must be tied back before practical work
  12. 18. never run in the laboratory
  13. 20. never eat or drink in the laboratory