LAB Safety QUIZ - Quiz PDF

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LAB SAFETY QUIZ 1. What do you do in case of an accident in the lab? In case of an accident in the lab always inform the teacher first. 2. When is it ok to mix chemicals? It is ok to mix chemicals when the teacher says to. 3. What do you do with a bottle after you have already used the chemical in it? After the student uses the bottle with the chemical in it, they must set the bottle aside, so they won’t get knocked to the floor. 4. How do you smell a chemical? The student should not smell any chemical unless the teacher gives the permission. The safe way is to hold it away from your face and waft the vapors to your nose. 5. How do you work with volatile chemicals? Volatile chemicals must be worked with under a fume hood. The teacher will tell the student what these chemicals are. 6. How do you prevent contamination? One way to prevent contamination is to use only clean glassware. Another way is to only pour out of a reagent bottle. The student should never pour anything back in, even the excess chemicals that weren’t used. 7. What do you do with left over reagent? Instead of pouring the left-over reagent back in the reagent bottle, the student must dispose of it in the proper waste container. 8. What do you do if there is a spill in the lab? If there is a spill in the lab, the student should report spills immediately. A student should always stay away from the spilled chemical and let the teacher clean it up. The teacher will then use an absorbent material.

9. What kind of substances can you not heat on a Bunsen burner? The substances that can’t be heated on a Bunsen burner are volatile organic liquids that are flammable. 10. What kinds of precautions do you need to take when using a Bunsen burner? The student should first check the gas hose for cracks, if it does have a crack, he/she should get a new one. The student must make sure the hose fits securely on the gas valve and on the Bunsen burner. The valve should be open and then the student turns on the Bunsen burner.

When using a match, the student must be more careful and turn the gas after the match is burning. The flame of the burner should be blue. 11. What do you do when you smell gas? If the student smells gas, they should turn it off. 12. How do you heat a test tube? Test tubes can be heated in a water bath, which transfers heat slowly and evenly. The test tube can also be heated directly in the flame. 13. How do you remove hot glassware from the flame? The student should hold the hot glassware in beaker tongs, never using their hands. The student can also use gloves to remove the hot glassware. 14. Do you need to shake a lab thermometer? Shaking the lab thermometer is unnecessary and it can be dangerous. 15. What do you do this a thermometer once you are finished using it? When the student is finished using the thermometer, they must set it down where it will be safe. It should be laid away from the edge of the bench and placed on a wire screen so it doesn’t roll off. 16. What do you do if a thermometer breaks? If a thermometer breaks any glass or liquid that spills out must be cleaned up and disposed of properly, which the teacher should do. Any alcohol spilled can be wiped away with a towel. A mercury thermometer is more difficult to clean up and the teacher should do it since mercury is poisonous. If the lab has mercury thermometers, the lab may be equipped with a mercury clean-up kit. They kit and glass should also be disposed in the proper way. 17. What are the rules for using a centrifuge? A centrifuge must be balanced to prevent vibration, which can cause it to fall on the floor. If the student is only centrifuging one tube, they should place another one opposite of it with an equal amount of water. Once it is finally balanced, it can be turned on and once it is finished the student should turn it off. A student should never try to stop a centrifuge with their hand. 18. What are the precautions you need to take when dressing for lab work? The precaution that a student should take when dressing is to wear clothing that will protect the student from chemicals and flames. No sleeves that are too loose should be used because they can knock things over or get in chemicals. The right material of clothing should be used so that the clothes doesn’t catch on fire, like fuzzy sweaters or filmy fabrics. Polyester and other synthetics can melt when they burn so the student should never wear those either. No rings or watches and always wear goggles/ glasses. 19. What is considered appropriate lab attire at FIU?

Appropriate lab attire is sleeves and clothing that fit close but aren’t too tight to restrict movement. Fabrics like wool that won’t melt and using a lab apron is helpful to keep splashing from getting in your clothes. Old clothing is the best to use in case chemicals get in your clothes. Long pants and closed leather shoes are the best to avoid anything getting on your legs or in your shoes. 20. What are the rules for eating and drinking in the lab? The rule of eating and drinking in the lab is to get rid of them before the student gets into the chemistry lab. 21. What do you do if you get injured in the lab? If the student has cut themselves, they should wash the wound to remove any chemicals. They must dry their hands and the teacher will then put a bandage on the cut. The teacher must always be notified first when there was an accident. 22. What do you do if a chemical hits your eyes? If a chemical hits a student’s eyes, they must wash them immediately in an eyewash fountain. The student should hold their eyes open and roll them around and no contacts should be on. They should continue to wash them for 15 minutes and them go to an eye doctor immediately to check for damage. 23. What do you do in case of a fire? If it a small fire, it can be covered. The burner should be turned off, so the fire won’t reignite. If it’s a larger fire, it requires a fire extinguisher and it must be operated by the teacher. If it’s too large to control, the students will then clear out of the building and call the fire department. Clothing fire can be put out by the safety shower or stop, drop and roll while using a fire blanket. 24. What do you do once you are finished? Once you are finished, you must clean everything used in the lab proper and wash all the chemicals that are left over away. 25. What is the correct place to dispose of broken glass? By cleaning it off and disposing of it in proper manner. The teacher can also help you clean it up and dispose of the glass in the safety way....