CHEM 212 Quiz 1: Safety Review Guide

CHEM 212--Quiz 1: Safety Review In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station? 30 minutes 5 minutes 15 minutes Until the irritation is gone 15 minutes Move to the safety shower if you spill hazardous chemicals on your ________Stand under the shower and _________ the lever. Remove clothing and continue flushing the area for _________ skin or clothing...pull...15 minutes Identify the equipment best suited for extinguishing each type of fire. small benchtop fire _________ large fire on floor __________ clothing fire _________ Overturned beaker...fire extinguisher...fire blanket Identify the precautions to take with exits in the lab. Locate the exits prior to the start of lab. Keep the exit door locked at all times. Make sure lab windows are always open. Do not block a door with an EXIT sign. Locate the exits prior to the start of lab. Do not block a door with an EXIT sign. Which signs are typically posted in areas of active lab work? Personal protective equipment (PPE) sign Chemical storage signs Safety equipment signs Sign prohibiting food and drink Personal protective equipment (PPE) sign Chemical storage signs Safety equipment signs Sign prohibiting food and drink *****What is the main precaution to take if a Gas Cylinder sign is present in the lab? Visually check that the gas cylinder is restrained but keep a safe distance from it. Visually check that the gas cylinder is restrained but keep a safe Remove the strap from around the gas cylinder to use it in the lab. distance from it. Test out the regulator on the gas cylinder to make sure it is working properly. Open the valve on the gas cylinder periodically to release pressure. Identify the step that is NOT recommended when responding to an emergency. Proceed calmly and listen for instructions. Turn off equipment such as Bunsen burners and gas jets. Alert your instructor. Gather your belongings. Gather your belongings. What is the first step for response to an emergency situation? Discuss the situation with the other students until everyone agrees on what to do. Remain calm and quiet, gather information, and assess the situRun outside the building as quickly as possible and call 911. ation. Remain calm and quiet, gather information, and assess the situation. Yell for help and assist with the evacuation of the lab. When an alarm sounds in the laboratory, it is important to respond _________ and remain _________. Listen for any other instructions, turn off any _________ in use, and be prepared to leave immediately. In lab, you may need to evaluate the odor or smell of a chemical. What is the best way to smell a chemical sample? 1/5 calmly...quiet...equipment Hold the sample under your nose and slowly sniff. Put your head in a fume hood as you heat the sample in it. Use your hand to gently waft the smell toward you. Vigorously shake the sample until the smell travels to you. Use your hand to gently waft the smell toward you. A student removes a chemical sample from a reagent bottle to be used in an experiment. What should he do with any excess chemical remaining from this sample after the experiment is complete? Conduct a second trial of the experiment with the excess chemiCheck and see if anyone else can use the chemical. If not, discard cal. in the proper waste container. Clean a spatula thoroughly, then use it to add the chemical back into the reagent bottle. Discard the chemical down the sink under running water. Check and see if anyone else can use the chemical. If not, discard in the proper waste container. Using the letters on the image, identify the significance of each section on the NFPA diamond A (blue)-- health B (red)-- flammability C (yellow)-- reactivity D (white)-- special hazards ****Most chemicals can be cleaned up with a general spill kit, but a few chemicals require specialized spill procedures. For each substance listed, determine whether a general spill kit is sufficient or if a specialized spill kit is needed. mercury _________ phosphoric acid ________ methanol ________ hydrofluoric acid ________ acetone _______ mercury-- special phosphoric acid-- special methanol-- general hydrofluoric acid-- special acetone-- general How should spill cleaning materials be discarded? Discard all components in the broken glass container. Leave them in the fume hood for the instructor. Rinse the cleaning materials in the sink, then place them in the trash can. Seal in a labeled plastic bag, then place in the solid waste container. Seal in a labeled plastic bag, then place in the solid waste container. Fill in the words to complete each step in liquid spill cleanup. ...absorbent material... ...plastic bag... ...solid waste container... ...detergent and water... 1. Surround the area with _________, then cover the spill. 2. Scoop up the material and place in a ________ 3. Place the bagged waste in a _________ 4. Wipe down the area with _________ Review the Safety Data Sheet (SDS) for potassium hydroxide, then identify the best course of action for each type of chemical exposure. If swallowed ________ In case of skin contact _________ If inhaled _________ In case of eye contact _________ If swallowed-- Rinse mouth with water. In case of skin contact-- Take off any contaminated clothing and rinse thoroughly If inhaled-- Move person to fresh air In case of eye contact-- Rinse with water for 15 minutes. When should lab participants look at the Safety Data Sheet (SDS) of a substance? After completing work with the substance Before using the substance While working with the substance in lab Only if the substance is perceived to be dangerous Before using the substance What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance? 2/5 Personal protection and first aid recommendations Identification and description of substance Hazard warnings Literature examples of use of the substance Handling, storage, and reactivity information Personal protection and first aid recommendations Identification and description of substance Hazard warnings Handling, storage, and reactivity information If you drop or break glassware in lab, first ________. Then, _______ Finally, place all that material into the ________ get thick gloves or a dustpan...carefully collect all the broken glassware...broken glass container Using the letters on the image, identify each component of the liquid waste set-up A-- funnel B-- primary container C-- waste label D-- secondary container ****Determine where to dispose of each type of waste. unused solid reagent _________ syringe tips ________ broken flask _________ titrant solution ________ unused solid reagent -- Solid waste container syringe tips-- Box lined with puncture resistant bag broken flask-- Sharps container titrant solution-- Nalgene bottle with cap Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab? The chemical Safety Data Sheets Your instructor's directions The chemical bottle labels Your lab partner Your lab partner What information does not need to be included a chemical waste label? A description of the experiment the chemicals were used for Names of the chemical compounds present in the container Relative amounts of chemical compounds in the container The date the waste container was filled completely A description of the experiment the chemicals were used for What are the best practices for safely handling waste in the lab? Always wear appropriate Personal Protective Equipment. Remove gloves for better manipulation of the waste containers. Place any paper towels from the clean-up in the trash. Check labels or instructions before any disposal. Always wear appropriate Personal Protective Equipment. Check labels or instructions before any disposal. When should you start a new chemical waste container in the lab? When you accidentally spill chemicals down the side of the current container When you need to dispose of another chemical that is compatible When the contents of the current container are a couple inches with chemicals in the current container below the brim of the container When the contents of the current container completely fill the container to the brim When the contents of the current container are a couple inches below the brim of the container Changing gloves often will minimize the spread of chemicals. To properly remove gloves, first, ________, and then, _________. Then insert _________ between the interior edge of the second glove and the skin, and remove the second glove. grasp the exterior of one glove with a gloved hand... peel off the first glove...a bare finger Determine the best way to deal with each of the following items that may dangle into the way during lab work. flowy sleeves--Tie back or secure loose bracelets-- Remove long necklaces--Remove long earrings--Remove long hair--Tie back or secure flowy sleeves ________ loose bracelets ________ long necklaces _________ long earrings ________ long hair ________ 3/5 Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once. While picking up a buret, an unknown solution left by a previous solution drips onto your hand. --Gloves While picking up a buret, an unknown solution left by a previous While pulling an empty beaker off the shelf at the beginning of lab, solution drips onto your hand. ________ it slips out of your hand onto the floor. --Closed-toe shoes While pulling an empty beaker off the shelf at the beginning of lab, While transferring a solution from a flask to a beaker, the solution it slips out of your hand onto the floor. ________ accidentally spills down the front of the lab bench. --Lab coat While transferring a solution from a flask to a beaker, the solution While checking on a stirring solution, the solution splashes up accidentally spills down the front of the lab bench. _________ towards your face. --Goggles While checking on a stirring solution, the solution splashes up towards your face. _________ What should you do every time before you leave the lab? Remove your gloves. Wash your hands. Remove your labcoat, if you are wearing one. Remove your gloves. Wash your hands. Remove your labcoat, if you are wearing one. Turn off the lights. ****Determine which items of personal protective equipment (PPE) you will likely use in a general chemistry lab. face shield (latex) gloves Determine when to put on disposable gloves for work in the lab. After cleaning all the glassware for the experiment Before entering the laboratory room After setting up all the glassware but before handling chemicals Before handling any glassware or chemicals for the experiment Before handling any glassware or chemicals for the experiment Determine the safest option in the lab if you need your vision to be corrected. Wear safety goggles while working and switch to corrective glasses when you need to read something Wear corrective glasses or lenses under your safety goggles for Wear your corrective glasses or lenses as normal for the whole the whole experiment, but always check with your TA or Instructor experiment for your school's policy Wear safety goggles without any corrective lenses for the whole experiment Wear corrective glasses or lenses under your safety goggles for the whole experiment, but always check with your TA or Instructor for your school's policy Determine when you should remove your goggles in the lab room. When everyone in the room is done handling any chemicals or glassware Whenever you need to lean in close to get a volume reading When you have finished cleaning up your chemicals and glassware Whenever your goggles become foggy or uncomfortable When everyone in the room is done handling any chemicals or glassware Read each statement regarding food and beverages in the lab and determine if each is true or false. Chewing gum is okay in the lab as long as you don't blow bubbles. _____ Tobacco products of all kinds are prohibited in lab. ______ Beverages are allowed in lab as long as they are in containers with lids. ________ Food items should not be brought into the lab. _______ Chewing gum is okay in the lab as long as you don't blow bubbles. False Tobacco products of all kinds are prohibited in lab. True Beverages are allowed in lab as long as they are in containers with lids. False Food items should not be brought into the lab. True Under what conditions should a student inform the instructor of a lab injury? The instructor needs to be alerted only if he or she needs to call 911. The instructor should be alerted only if the lab injury appears different from injuries the student has experienced previously. 4/5 The instructor must be informed of all laboratory injuries. The instructor must be informed of all laboratory injuries. The instructor should be alerted only if the injury involves broken skin. 5/5