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Lab Safety Rules

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A video that goes over how to work in a Science Lab safely.

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hi did you have a good summer Yellow how about you what's next time YouTube  you looking good  thanks Nick hi Greta what's next class YouTube that makes it better hello Laurel hi is it coming to the class check the list on the board you'll see that each of you has been given a seating assignment at your place and protective eyewear and the lab apron put them on to get used to wearing them this morning we're going to cultivate your lab safety awareness could you please check your hair may I ask what your name is Williamson mrs. Williamson it's okay for you to leave my hair down it's okay everywhere else in school Greta but the lab is a special place and requires special safety measures and the we're in this for all of them a please put on your eye protection and the apron will be expected to wear your lab gear for every lab. when the young man with the sunglasses around his neck yes that's right what's your name please nice to meet you glasses from around your neck you see they're likely to get in the way and could be dangerous in the lab  thanks look at these goggles they look goofy I'm not going to wear these I got contacts I wouldn't have to wear glasses  look at this is off everyone's always telling you what to do I don't see why I have to wear this house just wear some old clothes in this class we don't do anything without a reason  that's because this is science I'm glad you're questioning the rules because in science we don't take anything for granted the lab is the place where we find things out so we always have to be prepared for surprises fact that's how scientists make discoveries so ask questions and try to find answers that's real one in this class expect to be surprised and because we can't expect the unexpected There are rules and procedures so you'll need to follow directions most are to protect you like these high fashion lab aprons and eye protection in this class we're going to focus on lab safety awareness to help you avoid common accidents being safe in the lad means developing good habits using your common sense and staying alert remember in the lab surprises can and do happen so no matter how lab safety aware you become there's no Prospect of anticipating every accident so practice safe science wear your safety gear follow lab procedures and directions and listen turn teacher surprises will happen anyway so don't assume anything turn the web when we try to control an experiment we very often use heat so let's talk about using he's safely in the lab have several methods if heating things in the laboratory a candle a Bunsen burner and a hot plate first let's light the candle safety matches because they're longer and stiffer than book matches remember to use one at a time start the match away from your body like the candle fairly fast so you won't burn your finger  remember assume anything  if you're using the Bunsen burner as soon as the gas is on light the burner always with a safety match or striker and you'll want the burner within arm's length but not close enough to burn your clothes  if you were using this electric hot plate it would need to be plugged into a grounded Outlet sometimes you will find plugs designed to be used with a polarized outlet they have two prongs of unequal size make sure anything is plugged in so it's safe to use also remember that people conduct electricity so you could get a shock or do serious damage if there's anything wrong with the equipment or if you're using it in properly just because you can't see electricity doesn't mean you're not as let's take this little toy and do a demonstration and Greta could you come up here please Nick if you would place just hand on the chicken hold its little battery terminal on the belly they're right and I'm going to hold this one and I'm going to hold credit and I when I say so why don't you Hold Greta's other hand completes the circle and will complete the circuit okay ready thanks didn't know how electric you were did you ladies and electricity travels through people don't underestimate its ability to harm you also make sure that play are kept away from outlets and from appliances not designed to be used with liquids you don't want liquids to spill what electrical equipment is used if you see a frayed wire or if you think this something is an operating properly your risk don't assume anything note by your teacher thank you bro everybody all right thank you Brad you did just the right if you see a fire starting in the lab called  there's a fire extinguisher in every lab make sure you know where it is before you start if you see a fighter do what I do walk don't forget the fire extinguisher hold the pen aim directly at the fire push the lever and Fire  no remember when I said never assume anything never assume that because you shake a match like this or blow it out lightly but it still can't start what should I have done let the match cool before you toss it that's good but how do I know when it's cool enough Greta when it dresses Roy you should wet the match then you know it's cool enough I wear no even though we try to be prepared for Surprises by wearing safety gear and staying alert life Roy we try to minimize Surprises by that's also why for example when we use a candle we often stick it in a pot and put water around the candle play the supplies for use matches also  the water will put out the flame from the candle if the Pendleton stop if I can have another volunteer but learn a different way to put out a fire what come on you during this what do I do still fire in the wife's best get the fire blanket and use it to smother the fire you start to work until you know where the fire extinguisher the fire blanket and the fire exits are it's over there now fire blanket open it up and use it to smother the pretend fire ready go Xbox one more thing what did you hurt yourself while you were putting out the fire what would you have done well I would probably talk to the teacher or even going to the school nurse I'm sensible answers first aid kit  well I didn't even know where the fire blanket was either for a red or green cross is most likely found your First Dates  Wawa right now let's talk about what happened as we were coming into the lab why do you think I asked Greta to tie her hair  it might get too close to the flame she's using catch on fire that's why I singled you out brother also what's on fire if someone else uses a flame  sometimes it's easy for us to think about our own actions are we aren't always aware of what someone new what's another thing we should think about to prevent fires  what about a scarf or something that might catch on fire excellent answer starved flashes laundry Peasley's neckties dangling jewellery all can easily catch on fire they can also hook onto equipment to knock things over causing various accidents if you wear loose clothing type that contain it maybe with your lab apron you can roll up blue sleep  remember when you came into the class with his sunglasses draped around his neck on a nylon cord and I asked him to take turn off  now you know why Nick I didn't want you to strangle yourself at least get your Tangled Up and perhaps X yourself on fire just to let you know that I hold myself to the same standards I had to change from these to protect my feet from spatter breaking glass burn you name it from now on you're on notice that I won't let you through the lab door without clothes coaches there was essential as your aprons and goggles so what did we learn so far when you see the following emergency what should you do immediately more than one answer maybe hey get the fire extinguisher and put out the fire thoroughly be dumped water on the fire sea get the fire blanket and smother the fire or D run from the room leaving the door open for easy access to call an emergency number the correct answers Rance is wrong because some fires are works by adding water to them or at least are not controlled by water dance wrong because you should never run in the lab where's the fire and you cannot reach an extinguisher or fire blanket crawl away to avoid harmful gases and smoke close the door I'm calling emergency number Doris should be kept closed to contain the fire so after everyone is evacuated the door should be closed  question 2 while you are using a piece of electrical equipment you notice it has a put the following steps that you or someone should perform in the proper order  a unplug the equipment  be continue the experiment with a replacement piece of equipment be alert the teacher D turn off the circuit breaker or unplug the fuse to turn off the power and turn the power on the correct order is as follows the first don't assume anything don't touch anything the second step is d turn off the circuit breaker or unplug the fuse to turn off the power the teacher makes sure no electricity is flowing by disconnecting the circuit breaker or so there's no risk of electrical shock  the third thing you would do is a unplug the equipment now that the power it's safe to do so and the fourth thing you would do is eat turn the power on  finally step I would be be continued the experiment with a replacement piece of equipment  question 3 which of these heating saw can cause an electrical Hazard if not properly used a a candle b a Bunsen burner see a hot plate the correct answer is C the hot plate our symbol for electrical Hazard is this question for what is the appropriate symbol or symbol for hazards posed by the Bunsen burner more than one answer may be correct  the correct answers are a d and e  a the Bunsen burner what's an open flame so it's a fire hazard D the Bunsen burner and flash when you light it and E turn your hands from the heat of the flame directly or from object that you can eat with the flame question 5 which of the following pieces of safety gear is not essential for all lab sessions a aiprotection or God the clothing protection or your lab apron see foot protection or close Choose Or rubber gloves  the correct answer is D since not all experiments especially ones using heat rubber gloves require them your teacher and Common Sense should tell you when you need hand protection and there are different kinds of love some situations like heat resistant gloves that don't melt  see you next time these goggles they look Boosie I'm not going to ready I got contacts I wouldn't have to wear glasses  turn off I don't see why I have to wear this house were some old trucks who's stupid rules do anything without a reason  that's because this is so it I'm glad you're questioning the rules because in science we don't take anything for granted so at the place where we find things out so we always have to be prepared for surprises in fact that's how scientist makes discovery so ask questions and try to find answers that's real one in this class expect to be surprised turn we can expect the unexpected There are rules and procedures so you'll need to follow directions monster to protect you like the high fashion eBay buyer protection  in this class we're going to focus on lab safety awareness to help you avoid common accidents be safe in Malad means developing good habits using your common sense and staying alert remember in the lab surprises can and do happen so no matter how lab safety aware you become there's no Prospect of anticipating every accident the practice safe science wear your safety gear follow laughter sagers and directions and listen to your teacher surprises will happen any so don't assume anything let's try an experiment I'll take this bottle labels acid and make a dilute acid solution should I add water to acid or acid to water didn't think it doesn't matter  what's have someone come up here please  yes hi remember me I'm mrs. Williamson I'm loyal a little water into big one a child Mark W 1 A2 because I'll put water in first and add the second tube to elmark A1 W2 because I'll add things the other way around and into two two I'll put the same amount of if I had water into what next 2 to 1 I'll add approximately the same volume of acid  as I had water  and could you to a lad the same amount of water as I had s no worries  if your place your fingers like this  you can tell the class What You observe that's crazy hot and the other one isn't right off water to acid can you guess what might have happened if I use them even stronger acid and diluted it by adding water to the it would get really hot maybe even boil and it's better on your hands clothes or in your eyes so just in case do you make mistake or something unexpected happens we need to wear eye protection in aprons when working with chemicals and you may have noticed that I Winterhold to get away from me just in case and speaking of making no assumptions what's in these other two I don't know being a thorough scientist I have my secrets  I've labeled but what if I what inflable them or if the marking came off  chemicals have different properties and if I knew what I started with I might be able to figure stop what was they need to they might smell different from each other looks like Fido sniffing in the grass  so we are at Hilton by unpleasant or even harmful tell the class what the chemical smell like Laurel  this one's nail polish remover this one doesn't smell like anything very good this hour the next Swiss bleach exactly how about tasting  that might work well in the kitchen but this is the lab in the lab we don't go around tasting and touching chemicals because they be dangerous if you don't know what something is ask me what it is  in fact never touch or taste chemicals your specifically told keep Lids closed tightly when chemicals are not in use and if chemicals should get on your skin or clothing immediately rinse with water that notify the teacher hands appropriately and of chemicals do get on them wash and rinse thoroughly  now you can see why labeling things is so important make sure to label each container and keep track of what you at each container why do you think we have a rule that we don't eat or drink in the left we don't want to eat Poison by this Bravo Laurel it's one thing to pick up a glass of tomato juice instead of orange juice you might prefer one to the other but both are safe but some chemicals are very dangerous and can make you sick some are so dangerous that it takes only a level to kill you so we need a very careful and never eat or drink in the left got it okay let's get back to our problem with identifying liquids just because we know the name of a liquid or solution doesn't mean we know what it will do and every situation let's take these three that I've stretched over frame and I'm going to put a little bit of clear liquid number one want to handkerchief one and we'll put a little bit of clear liquid number two on two handkerchief to add a little bit of clear liquid number 3 onto handkerchief now if I pick the handkerchiefs up so that both new and the class can see what's going on here go through it right now I'll get an egg crack into this dish  a little bit of that same clear liquid number 3 on to the egg which has some materials in it that have some similarities to say  your Would You observe for us again please the egg white is turning white like it's being cooked privation and you can't cook an egg or an eyeball  ladies and gentlemen make no as you can see it can cost you dearly what do you think of our ugly lab aprons and eye protection now Laurel I'll be wearing mine if you spill anything in the lab we need to get it up right away  so if you see a spill call me not let water or anything else just dry up  the flip can cause a fall which can cause an injury in any environment but it's especially dangerous in the lab because you could cause another accident by bumping into someone else or by knocking over something and that can cause some of the other problems we've been talking about  my floral you can go back to your seat now and watch out for that spot on know if I can have another volunteer Nick how about you I never gone well consider it a request let's see how important is it not to make assumptions about me situations  I'll take two solids and I'll put a little of the first one into this tooth a little bit of the second one  into the second two next  and I'll put some water into each of the two and next I'm going to put a thermometer into the tubes and as soon as I do I want you read the thermometer and tell us what the temperature of the two solutions do you have trouble saying the number is what will be another way to figure out the temperature like Laurel did last time of course using a thermometer and we can learn what the temperature is more accurately but then again thermometers have little temperature ranges and if we go far outside them a thermometer could break I think it would be prudent for me to pick up the tubes one at a time  and have you tell the class how I feel just like that this one's hot very good and this one and this one's called so  sometimes things get very hot and sometimes things get very cold thank you Nick don't go anywhere just yet will be needing your services again in just a minute  the case of the first two formation of a solution resulted in energy being given off and the two became hot in the case of the second two energy was absorbed and who became cold so don't assume anything something may look like water and if they not see what sometimes formation of a solution results in energy being given off and sometimes it results in energy being absorbed and if you any doubt about the temperature of a vessel handle it was Tom  special gloves or insulated material such as apostles keep glassware from touching your hands directly unless you know it's safe to touch if you have any doubt don't that's in fact if the rats don't fit our special set up so we don't have to it also decreases don't worry I haven't forgotten we've just saying that sometimes things get very hot or very cold in the left and that all glassware can take that glassware that can be safely cooled or heated especially marked with a brand-name life Pyrex kindness or text under notes should you heat or cool anything unless you're using temperature resistant glass work and you can tell if it is temperature resistant by looking are the brand name can you see the brand name on the top of this to Nick real clearly Anna Laura Bunsen burner for running reactions in which energy might be given off or energy might be absorbed sorry am I an exciting guy or what next in fact gives us an opportunity to learn how to clean up broken glass  I always clean up my messes  weather in what are the lab avoid picking up broken glass with your bare hands Jet Sweep up much of that is possible and I'll get the little bit that's left then we'll just the sweeping to tell into this container this provided for that person thanks for the demonstration and the cleanup thank you thank you you're welcome  revolve open blast live or dishes and scientists great things and left but there are dangers when we break things in the laboratory in our home maybe something poisonous or dangerous in the things we break if you see the glass is cracked chipped or broken report it and I'll exchange the broken glassware for a new Peaks then we'll play not the flan glass where in the special broken glass container we want everyone to know when using or emptying the container that it may contain broken glass and that's why we have a special place for broken glass see how sharp this little piece of broken glass and be wife is sharp is the scalpel who use tools remember they're not toys and when you use your detecting tools use your common sense is scalpels Razor detecting needles and other sharp instruments with great care remember they're designed to cut and Pierce so that means they can cut cute just as good Cooks in the kitchen and Carpenters are others who use tools never cut towards you don't want to be performing and unintentional dissection on yourself if you do cut yourself in the lab let the teacher know right away come gather round and watch me the SEC the part of the flower that may be familiar to some of you  retake the scalpel cutaway  and we can use to secting tools to expose parts of the flower notice that I hold the detecting needle gently but firmly it's not a BBQ skewer and by the way these instruments are not sterile so we don't want them to cut her Pierce us if you do feel a jab or you cut yourself notify the teacher in me so cut away from yourself and don't forget to wear your safety glasses when you're using sharp instruments you never can tell if something that you're light come flying towards your eyes Okay ladies and gentlemen if you'll return to your places it's time for the video quiz question 1 a student carefully reads directions for the next experiment is to heat a solution in a test  correct the student in the pictures by correcting the mistakes there six errors in the picture okay number one student has no goggles so dangerous chemicals cause bladder and hurt her eyes  number to the student does drinking in the lab and risks poisoning herself if the drink gets contaminated not to mention the risk of distracting attention from the experiment or 10 which could weather accidents  number three the student isn't wearing an apron so if chemicals Splash or the student could damage her clothes or even worse her skin number for  her hair isn't pulled back so it could catch on fire  number 5 the test tube pointed toward the student means the chemicals that could come out of the test to come out all over her  and the test tube could shatter from the heat because it's not heat resistant it's not marked Pirates himax or 10 spirit  question number 1 B what is one thing the student is doing correctly there are three possible correct answers one the student is standing it is excellent lab procedure to stand because you have more freedom of movement and more control are your work and in case something goes wrong you're already on your feet  to the student is using safety which gives her control over the flame as she likes it  and the third correct answer is that the student is using a test holder to avoid getting burned by the test tube when it gets hot  question 2 safety symbols what symbols are associated with this activity a poison Hazard the fire hazard see I Hazard D and Hazard is sharpness hazard the correct answers are C D and E see because a flying piece of tubing could hit the student in the eye D if the student is cutting towards himself it would be easy to hand and E is the most apparent answer because a scalpel is a sharp object  question 3 it's a rule not to eat or drink in the laboratory environment why  hey you could eat something harmful sick and poisonous  you could eat something you didn't mean to by mistake  you could eat something contaminated a chemical germs Etc D all of the above there are many reasons why no eating you know drinking is a good roll in the lab all of the above is the correct answer now that we're at the end of this last session we need to clean up to the next one help me clean up the work. Return all the lab equipment and supplies to their proper places so the next class can find them to be sure all the burners water gas lines in any electrical appliances are off before you leave the lab unless I specifically asked you to leave something on  are We Done Yet desperate good safety awareness Greta by wouldn't even think about eating that meant in the lab I wouldn't touch my eyes if I were you either please don't take off your open aprons until you've washed your hands then you're done I wash your hands please  pocket knife I want please don't run so in the last thing

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