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Chemistry Safety Rules for Lab Experiments

Follow essential safety rules and procedures while conducting chemistry experiments in the lab. Learn about handling chemicals, glassware, and potential hazards. Understand the importance of first aid and emergency procedures. Stay safe and prevent accidents.

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Chemistry Safety Rules for Lab Experiments

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  1. Safety 1.1

  2. Chemistry Safety Rules 1. Only follow procedures written in the lab. This is not a time to experiment and see what happens if ___________________! 2. Notify the teacher of medical problems. • Allergies • Asthma • Pregnancy

  3. Never eat or drink in the lab area. • Never smoke in the lab area. • Keep work area clean. The only items you should have in lab is your pencil and your lab notebook/worksheet.

  4. 6. Do not wear jackets, ties or any other loose clothing in lab. • Roll up loose sleeves. • Remove jewelry that dangles (necklaces, chains, bracelets) 7. Tie back long hair. 8. Never wear open shoes or sandals in the lab.

  5. Wear goggles at all times! • No horseplay. This will be an immediate dismissal from the lab. • Keep chemicals and paper away from any open flames. • Don’t put your face, eyes, or mouth near an open chemical container.

  6. 13. Conduct any experiment using noxious vapors in the fume hood. 14. Know the location of the emergency equipment. • First – aid kit • Eye wash station • Fire extinguisher • Chemical shower

  7. 15. Time for a tour! • Mr. Hess will now take you on a tour to identify the items in 13. And 14.

  8. 16. Dispose of waste materials as instructed by your teacher. • Glass – white glass recycle can • Solid – trash can • Soluble (substances that dissolve in water) – down the sink • Insoluble – trash can

  9. 17. If you spill a chemical, notify the teacher and have someone stay with the spill.

  10. Handling Chemicals 18. Double check labels before using the chemical. (Look for the formula) • Don’t take more than you need. • If you have extra, see if another group needs it, then dispose. • Do not put extra chemical back in the container!

  11. 19. Only H2O should come in contact with chemicals. • When combing acid and distilled waters, always add acid to water.

  12. 20. Hazardous Chemicals • Teratogen – causes birth defects • Allergens - causes allergies • Carcinogen – causes cancer • Mutagen – causes gene mutation

  13. Handling Glassware 21. When handling hot glassware always use some type of insulating pad. 22. When you break glass: • Let it cool • Use dustpan to clean it up • Put it in the glass recycles

  14. 23. Pyrex is the only glass that is to be heated • Glassware on stovetop story

  15. 24. Cleaning Glassware Procedure • Dispose of Chemical • Clean with paper towel and tap water and brush • Rinse with tap water • Rinse with distilled water • Dry

  16. Heating Substances 25. Turn off gas burners when they are not in use. Why? • It heats up the room • It wastes fuel • There could be an invisible flame

  17. 26. Never look into a container that is heated. Never point a heated container in the direction of someone else. 27. Never heat a closed container. • Gas expands when it is heated.

  18. In Case of Injury 28. Remain Calm 29. Notify your instructor 30. Send for Help!

  19. First Aid 31. Know where the first aid kit is located. 32. Acid or Base spills on skin. • If it is on an extremity, use the sink • If it is on your torso, use the chemical shower

  20. 33. If you get chemicals in your eyes flush them in the eye wash for 15 minutes. 34. If you get chemicals in your mouth, DO NOT DRINK ANYTHING! • We will contact poison control to find out the proper procedure.

  21. 35. If your clothing is on fire, then drop to the ground and smother the flames. 36. Don’t inhales fumes or noxious vapors directly. • Use the wafting motion.

  22. 37. If a person is in shock, don’t let the person walk anywhere.

  23. MSDS and NFPA

  24. National Fire Protection Association (NFPA) • NFPA Fire Diamond - agraphic that identifies the hazards of a particular chemical

  25. NFPA Diamond

  26. Fire – 4 Rating – Pyrophoric substances – spontaneously ignite in air • White phosphorus, plutonium, uranium, alkali metals • Pyrophoric substances

  27. Reactivity – 4 rating – Readily combustable – Nitroglycerin, Chlorine Dioxide • Can anyone think of something that is produced using nitroglycerin?

  28. Health – 4 rating • Hydrogen Cyanide, Carbon Monoxide • Others? (think world wars)

  29. MSDS – Material Safety Data Sheet • Accompanies all hazardous chemicals • Provides info needed to protect yourself and react correctly in an emergency

  30. Info Included • Identity of material including chemical and common names • Hazardous ingredients • Cancer causing agents (carcinogens) • Chemical and Physical hazards (flammable, corrosive…)

  31. Health Hazards • acute – occur immediately • chronic – build up over period of time • Limits of exposure, entry routes, target organs, medical conditions which make exposure worse • Precautions and safety equipment • Emergency and first-aid procedures

  32. Copper Nitric Acid

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