![]() ![]() Don’t handle hot containers using your hands. Most substances expand upon heating, so heating a sealed container risks an explosive outcome. How the spill gets cleaned up and what happens to the chemicals and the broken glass depends on the situation and your lab’s policies. Paper towels are not always the go-to means of mopping up a spill because some chemicals react with cellulose in paper and start a fire. So, the first action you take is warning your neighbors about the accident. There are also rules about reporting accidents. Labs have rules about how you dispose of chemicals and sharp objects. Don’t use a strong base because it causes a chemical burn, just like the acid. ![]() Then, neutralize any remaining acid with soapy water or a bit of baking soda or other weak base. First, rinse the acid with plenty of water. In other words, applying a base immediately increases the risk of adding a thermal burn to your chemical burn. However, the reaction between an acid and a base is exothermic. Soap and other bases do neutralize acids. Finally, if you don’t know how to use a piece of glassware, you increase the risk of an accident or ruined experiment.Īpplying oil or lotion just traps the acid onto the skin. Similarly, make sure glassware is dry because some chemicals don’t play nicely with water. Using items that aren’t clean contaminates the experiment, sometimes with dire consequences. Glassware that has cracks or chips often breaks during an experiment. The best option is notifying the instructor. While using the correct type of fire extinguisher is a plan, definitely don’t run to get it. Alternatively, water may cause a chemical reaction or spread chemicals. Similarly, adding water (H2O) feeds certain types of fires. Opening all the windows is a bad plan because it feeds the fire with oxygen. That being said, they offer more protection than wearing no eyewear at all. Also, they aren’t usually impact-resistant. Regular glasses generally don’t protect the sides of your eyes and aren’t necessarily resistant to chemicals. Carefully twist the tubing and stopper.īefore you set foot into the laboratory, make sure you know the important lab safety rules. Protect your hands with gloves or a towel.Ĭ. Lubricate the glass with glycerin or water.ī. (10) To insert fire polished glass tubing into a stopper:Ī. Warn others of the spill and go tell the instructor.ĭ. Collect the glass and throw it in the sharps bin and let the spill air-dry.ĭ. Use a paper towel for clean-up, but be sure to throw away the glass in the sharps bin.Ĭ. Use a paper towel to mop of the spill and collect the glass and throw the mess away.ī. (5) If you break a test tube and spill a chemical:Ī. (4) If acid splashes onto your skin, immediately apply: ![]() ![]() (1) Eyeglasses and sunglasses are as protective as: The answers and explanations are below the quiz. Download and print the PDF quiz or just take the quiz right here and check your answers. Here is a quick 10-question multiple choice lab safety quiz that tests how well you understand safe procedures in the science lab. How safe are you in the laboratory? See if you pass this lab safety quiz. This entry was posted on Septemby Anne Helmenstine (updated on September 29, 2022) ![]()
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