1. Adapted from Vonceil Anderson 2004 Based on the website: Chem Lab Safety: the Department of Chemistry University of Nebraska-Lincoln http://www.chem.unl.edu/safety/index.html

2.  Write Drill # 15 and the date  Copy the questions on the right side of the screen  To receive credit you must be in your seat and work quietly for 5 minutes

3. Objective: Students will be able to  Identify and explain safe laboratory practices  HW#10: pick up worksheet (Word- search)

4.  Work as a group  Examine the picture-look for all the wrong things students are doing  Pick 5 or more numbered items and write what’s wrong on your white board  Example: ◦ #3-fire extinguisher is not where it should be

6.  Most accidents in the lab can be prevented:  Stop to think!  Common sense will help, if exercised  What will be the consequences of what I do next?  If in doubt, ask the teacher.  The following scenes graphically illustrate some difficulties as well as downright dangers that you could face in lab, mostly due to failure to observe ordinary safety precautions, and common sense.

7.  Complete the graphic organizer using the information presented in the following slides  Work on your own  After the presentation you will have an opportunity to discuss your answers with your group

9.  The school provides Laboratory Aprons for you to wear while during lab.  Lab Aprons prevent: ◦ Stains ◦ Small chemical spills on your clothes  You will be required to wear your apron during labs.

10.  Many states require by law that students wear approved safety goggles or safety glasses when in the lab. This is an absolute "MUST"!

12.  Avoid floppy garments; avoid things that dangle ◦ These get tangled up in equipment or glassware and cause accidents ◦ Avoid long, loose hair styles for the same reason. ◦ When Bunsen burners are in use, long hair sometimes catches on fire

13.  To protect your feet from drops and spills avoid sandals, thongs, and other open shoes Correct Incorrect

15. These items may be used temporarily for small injuries (say, a cut finger)  Go to the school nurse immediately afterward.  Do not wait until the end of the day.  However, if blood is in evidence-- STAY AWAY! Let the victim apply his/her own bandage. If blood is on the floor or lab bench, let trained personnel do the clean-up.

16.  Sweep it up right away  Don’t track in it all period.  Don’t use your hands to clean it up. Place the broken glass in a "SHARP’S CONTAINER. –This is a thick walled carton, that will be sealed and discarded as such.

17.  Any time a liquid is spilled in lab it must be cleaned up IMMDEATELY.  DO NOT walk away and leave a spill unattended.  Use an absorbent substance, such as Kitty Litter, to absorb the liquid and then dispose of it properly.

18.  When an Acid or a Base is spilled, the chemical MUST be neutralized prior to cleaning up.  To Neutralize: ◦ Acid—Use a weak base: Baking Soda ◦ Base—Use a weak acid: Vinegar (Weak Acetic Acid)

19.  When using electrical equipment keep in mind: ◦ It is always important that you have Dry hands when working with electricity. ◦ When unplugging a device from the power socket, be sure to hold the head of the plug. Never pull on the cable to unplug any equipment.

22.  A good practice is to assume everything in the lab is toxic.  Toxic means poisonous

23. You do not know what another person might have added to the "distilled water" jug.

24.  Do NOT smell the flask directly.

25.  If you absolutely must test the odor, carefully waft the vapor from the flask toward your nose with your hand.  Keep the flask quite distant from your face.

26. Remember when working with heated glass: Hot Glass Looks JUST LIKE cool glass. Don’t Burn Yourself or let your partner be burned Use Tongs or Hot Mitts to pick up hot glass.

27.  Make sure that reaction tubes, e.g. test tubes, are not directed toward yourself or other persons.  The chemicals may splatter out the tube. NO YES

28.  At the end of a laboratory experience it is imperative that the lab is properly cleaned. ◦ Chemicals are to be disposed of in the appropriate fashion. FOLLOW YOUR INSTRUCTOR’S DIRECTIONS EXACTLY.  SOME CHEMICALS CAN BE VERY DANGEROUS WHEN DISPOSED OF IMPROPERLY.

29.  It is the responsibility of all students to make sure their work area is clean for the next group of students. ◦ The lab is to be in the same, or better, condition when you leave as when you entered.  Stools will be under the counter. No trash/paper/etc. will be left on the counters or floor. A Clean Lab doesn’t happen by MAGIC!!

30.  In a laboratory setting, horseplay, even if good-natured, is absolutely unacceptable.  No pushing; no shoving; no tripping.  Serious accidents all too often result involving the glassware or solutions in use. “ The Devil made me do it” is NOT an acceptable excuse.

31.  While many of these rules apply to personal safety, they also involve the safety of those around you.  If you are found to be breaking the safety rules of the lab, consequences could include: ◦ Detention--Referral to administrator ◦ 0 for the activity--Removal from lab, either for the specific activity OR permanently

32.  Watch short video  Complete GO as you watch  Work on your own  After the video you can discuss the answers with your group

33.  Answer each video-quiz question on your white board  You have 30 seconds to discuss and decide what is the correct answer  Need a score keeper volunteer

34. Assignment: Draw and describe the function of: ◦ Apron ◦ Goggles ◦ Fire blanket ◦ Fire extinguisher ◦ “Sharps” container ◦ First aid kit

35.  Identify and explain safe laboratory practices

36.  Worksheet

37.  To receive credit you must be in your seat and work quietly  Question:  Describe 2 ways to put out a fire in the lab. Include details