Lab+Safety+Worksheet

__Handling Chemicals Safely__ 1. When you read the label on a chemical container, what are the three most important pieces of information? A. concentration, hazard warning, name 2. How many times should you read this information before you open the container? A. Multiple times 3. Is it important to be exact when preparing a chemical reaction? Explain. A. Yes. Becauuse you can get hurt 4. What should you do with leftover chemicals after an experiment? What should you do with the products of an experiment? A.Waste them. Put them in sink or trash 5. How can you draw small volumes of liquids into a pipette safely? A.Use i pipetter 6. Why is it important to read instructions all the way through before beginning an experiment? A. To make sure you do it right 7. When you need to carry chemicals from one place to another in the lab, what size container is the safest to use? A.A small one you can handle 8. If you spill a liquid chemical, what should you do? Atellteacher and stay away 9. Should you add acid to water, or water to acid? A.Acid to water

__Bunsen Burner and Glassware Safety__ 10. Before hooking a Bunsen burner to the gas line, what should you look for? A. Cracks 11. How quickly should you turn on the gas? A.Immidiately after use 12. When you use a striker, where should you stand? A. At Arms Length 13. If your flame sputters or goes out, what should you do? A. turn the gas off immidiately 14. If you smell gas in the room, what should you do? A.Turn it off 15. Is it safe to heat a sealed container? Explain A.No, because it could make the container explode 16. Is it safe to work near heated objects? A.If you follow safety procedures 17. Is it safe to use glassware that has cracks or stars ? Explain. A.No, because it could break or explode 18. How can you safely carry a heated object? A.With gloves 19. Is it safe to heat flammable chemicals (e.g., gasoline) with a Bunsen burner? A.NO

__Thermometer Safety__ 20. Thermometers contain either alcohol or mercury to indicate temperature. Which substance (mercury or alcohol) creates toxic vapors when exposed to air? A. Mercury21. If you break a mercury thermometer, what is the safe way to clean it up?A. Mercury Disposal Kit22. Before choosing a thermometer for a specific job, what should you know?A. If it's mercury or AlcohOl

Glass Tubing Safety 23. What is one of the most common causes of injury in the laboratory?A. Glass Cuts24. Describe how to use an inserter.A25. If you do not have an inserter, how should you insert glass tubing into a rubber stopper? How can you protect your hands?A26. What is the safe way to insert a thermometer into a stopper?A.

Centrifuge Safety 27. If you have just one sample that needs to be centrifuged, what must you do before turning the centrifuge on? Describe.A.28. If the centrifuge starts to vibrate or move across the countertop, what should you do?A. Turn it Off29. How should you stop a spinning centrifuge?A.

Dressing for Safety 30. What types of shoes are appropriate for the lab?A. Clothes toed31. Describe the type of clothing you should wear on days when you will be working in the lab?A. Skin Hugging32. How should you protect your eyes from chemicals and class shards?A. Wear goggles33. What is it important to remove rings, watches, and contact lenses before working in the lab?A .It can damage jewelry34. How can you protect your hands when working with corrosive chemicals? A. Wear Gloves

**__Behavior in the Laboratory__**

35. Is the Laboratory a safe place to eat, drink, or put on makeup? Why or why not?A. No, Because you could spill or get distracted and chemicals could contaminate food and drink36. What is a safe way to read a burette that is above your eye level?A. Lower it down to eye level or stand on a step stool37. Where should you keep personal belongings that you bring to the lab? A. Out of the isle, In a place not designated for walking

Emergency Equipment 38. Name the pieces of safety equipment in your laboratory. Do you know where they are and how to use them?A. Goggles, Aprons, Gloves pipettes, 39. How do you extinguish a small fire in a container? What should you do if you have a larger fire?A If it small, cover it and turn burner off, if large, tell teacher to use fire extinguisher40. How do you put out a clothing fire?A. The Shower, stop, drop and rool, use fire blanket