Safety QuizMMSpring2023

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Lone Star College System, North Harris *

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1405

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Chemistry

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Feb 20, 2024

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docx

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SafetyQuizMM2023 January 19, 2023 LAB SAFETY QUIZ CHEMISTRY 1405 Name:___________________________ Watch the safety video produced by the American Chemical Society on safety in the laboratory: https://www.youtube.com/watch?v=9o77QEeM-68 and fill in the blanks with the ONE best answer according to that video. For True and False questions, circle either the T or F. Have this ready to hand in your first lab session on January 25 th 2021, it is your ticket to enter the lab! General Safety 1 T or F Always use small containers that you can control when pouring. 2 T or F Read and re-read chemical labels to ensure that you are adding the correct chemical reagent. 3 T or F When diluting conc sulfuric acid, you should always add acid to water . 4 T or F Keep a stopper of a reagent bottle between your fingers when pouring from a reagent bottle and then set the reagent bottle out of the way. 5 T or F The safe way to smell if your Professor gives you permission is to waft the odor towards your nose. 6 T or F Is it okay to pour excess chemicals back into the reagent bottle from your beaker? 7 T or F When drawing out chemicals always use a pipette 8 T or F It is okay to throw chemicals down the sink. 9 T or F When you have completed your lab, you must : a. clean the glassware that you used, b. wipe down bench, and c. wash your hands Bunsen Burner We learned from the video to never use a Bunsen burner to heat volatile vapours, that could occur if you were taking Organic Chemistry, instead you should use a steam mantle. The rules to follow when lighting a Bunsen burner include: check the rubber hose for cracks, fit the rubber hose securely to the gas tap, have the gas valve open at bottom of the Bunsen burner, then light with either a match (strike away, turn gas on after match has been lite, that way gas will not escape, light from side so that your match does not blow out) or a striker, if flame properly adjusted place under your set up. We will go over in our first lab the various colours of the flame: yellow flame is too cool, so open the air hole in the barrel to let in more oxygen for combustion, adjust the bottom valve if the flame is too small or large. Flame should be blue with the tip of the inner cone the hottest part of the flame. 10 If a flame sputters, flares or goes out, 11 T or F Cracks or stars in glassware are not dangerous 12 T or F The best way to heat a test tube is at an angle away from yourself and your neighbours, moving the test tube, back and forth in the flame 13 T or F Hot glassware glows red. 1

SafetyQuizMM2023 January 19, 2023 14 T or F A hot ring stand glows red. Thermometers You will not use a mercury thermometer in this lab only an alcohol thermometer. When finished using a thermometer, remember to lay it down on a wire screen so it does not roll away. 15 T or F A thermometer needs to shaken just like a medical thermometer. 16 T or F A broken thermometer can be thrown in the trash. 17 T or F You should never reach across an open flame. 18 T or F The hottest part of the flame, is the inner blue cone where temperatures can reach up to 600 °C. Broken Glass Please note that you will not be asked to bore a hole in a rubber stopper and insert glass tubing! Neither will you use a centrifuge in this lab, but when you do, say in a Biology lab, remember to balance it and don’t try to stop the centrifuge spinning with your hand. 19 One way to prevent accidents is to dress properly. This includes: A. no loose B. no dangling C. tie back long D. wear safety E. use safety F. wear sturdy Behaviour in the Lab 20 T or F No fooling around and do not run in the lab 21 T or F It is okay to put my backpack in the aisle? 22 T or F It is important to read the burette at eye level. 23 T or F It is okay to eat and drink in the lab. Emergency equipment 2

SafetyQuizMM2023 January 19, 2023 24 T or F If you cut yourself, wash the wound under running water, dry your skin, and apply a bandage on the cut 25 If you get a chemical in your eye, you should use the eye wash fountain, holding your eyes open for at least , notify your Professor and then see your 26 If a non-corrosive chemical is spilled on your clothing, the first thing to do is to any clothing that meets the non-corrosive chemical and then rinse under running water for 27 If a corrosive chemical spill is over a large portion of your body, go to the safety shower, the first thing to do is to any clothing that meets the corrosive chemical and then rinse under running water for minutes. 28 T or F The proper procedures for dealing with a fire: a. cover small fires and turn off the burner, b. if it is a larger fire, your professor will use a fire extinguisher and c. if the fire is too large, clear out and call the fire brigade telling them what chemicals are involved 29 Name three pieces of lab safety equipment that were mentioned in the safety video: a. b. c. 30 The most important thing to remember if an accident occurs is "Do not 3

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SafetyQuizMM2023 January 19, 2023 CHEM 1405 • Laboratory Safety Quiz What is the name of each of the following? (Write your answer on the line under the diagram.) 4

SafetyQuizMM2023 January 19, 2023 CHEM 1405 • Laboratory Safety Quiz On the diagram below, indicate the location of the following items, do this in your first lab: Safety Shower Eye Wash Fume Hoods Glass Disposal Container SDS Sheets Fire Blanket Fire Extinguisher Exits Emergency Phone INSTRUCTOR'S DESK 5