1. LAB SAFETY

2. When to wear goggles and aprons?
If using chemicals and flames

3. Personal Safety: Goggles
NO!!!!!!!
YES!!!!!!!!!

4. What is unsafe?

5. THINK!
Accidents in the lab can be prevented!
You are the most likely cause of an accident!

6. When you first enter the lab…
A. Go to lab and start experiments
B. try out your own experiments while you wait
C. read the lab and wait for the teacher’s instructions
D. go pick up chemicals and practice the lab
ANSWER: C

7. Read Lab First
Read the experimental procedure ahead of lab.

8. Disposing of Matches
The match should be quenched with water, NOT thrown into the waste crock directly.
Fires may occur.

9. No Horseplay

10. If the fire alarm rang, what should you be sure is turned off?
Bunsen burner
Electrical equipment
Gas valves
Close chemical containers

11. What should I wear in the lab…
if I am going to work with chemicals and flames?
Goggles

12. Closed Toed Shoes
The Safety Code of most schools will not approve of open foot ware; so avoid sandals or flip-flops

13. NO FLOPPIES Avoid floppy garments; avoid things that dangle
Avoid long, loose hair styles for the same reason.
When Bunsen burners are in use, long hair sometimes catches on fire

14. Handling of Acids or Bases
"Vinyl" gloves or "nitrile" gloves (often green or blue in color) are preferred.

15. Where’s the Safety Equipment?
Fire Extinguishers
Fire Blanket
Eye-wash Fountain
First-Aid Kit

16. Fire Extinguishers the carbon dioxide extinguisher is red
AVOID using a dry-chemical extinguisher on a fellow human being.
the carbon dioxide extinguisher is red
general purpose extinguishers.

17. Fire Extinguisher
Pull Pin
Aim

18. Fire Extinguisher
Squeeze the handle to begin operation.

19. Fire Blanket
Wrap it around the victim to smother the fire.

20. EYEWASH

21. EYE WASH If you get something from the lab in your eye—
GET IT OUT IMMEDIATELY!
Run some water through the eyewash fountain before you use it.
Retract your eyelid (hold it open);
Don’t squint—this restricts water access.
Run fresh water over your eye for several minutes.
Go to the school nurse immediately afterward.

22. First Aid Kit 
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.

23. First Aid Kit
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.

24. FUME HOOD
Use the HOOD for reactions that give off vapors, especially smelly vapors.
The draft of the HOOD will sweep away vapors so that the lab itself maintains reasonable air quality

25. Safety Shower Shower should be used for dire EMERGENCY only!
If you (or a lab mate) is spilled chemicals, position yourself (or your lab mate) under the safety shower.

26. Safety Shower Pull the handle—a deluge of water will result.
Lab Safety Video (7:27)

27. Safety Shower
The safety shower should also be used if you suffer a massive spill of a dangerous chemical on yourself, and need to get it off rapidly.

28. Broken Glass
Sweep it up right away
Don’t track in it all period.

29. Broken Glass
Place the broken glass in a crock.

30. If you need to leave the lab table to go to the bathroom,
A. Be sure someone is watching your lab station
B. shut off the gas valve and electrical equipment

31. Is it OK to… A. eat in the lab B. put your head in the fume hood
C. chew gum in the lab
D. drink in the lab
E. have horseplay in the lab
ANSWER: NO

32. What is the first aid step to do if you…
Cut your finger
Your clothing caught on fire
You burned your finger
Mercury ran out of a thermometer
Don’t touch it
Stop, drop, and roll
Run it under cold water
Clean the wound, then use a Band-aid©

33. All living organisms should be handled with…
RESPECT
That means do not throw things into their homes.
Do not tap on the aquaria.
Do not throw them on other students.

34. What should you bring back with you to the lab?
A. Book Bag
B. Something to write with
C. Lab sheet
D. Biology Book
E. Lunch
ANSWER: B and C

35. NO!!!!!!!!!!!!! No UNAUTHORIZED experiments!
These are terrible dangers in unskilled hands.

36. NO!!!!!!!!!!!!!!! No EATING or DRINKING in the LAB.
A good practice is to assume everything in the lab is toxic.

37. No!!!!!!!!!!!!!!!!! DO NOT drink from lab equipment.
NOT EVEN distilled water.

38. Pipets NO
When using pipets, DO NOT suck the liquid into the pipet directly by mouth.

39. Pipets YES
DO use a rubber bulb to create a vacuum.

40. When to use the beaker tongs?

41. Should you use glassware that is…
Chipped
Dirty
Cracked
ANSWER? NO

42. Testing of Odors
Do NOT smell the flask directly.

43. Wafting YES
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.

44. HOT GLASSWARE
Remember NOT to hand the red-hot glass to another person, especially the teacher.

45. Heating Test Tubes
Make sure that reaction tubes, e.g. test tubes, are not directed toward yourself or other persons.
The chemicals may splatter out the tube.

46. Aim away from you and all people!
Heating Test Tubes
Aim away from you and all people!

47. Water to Acids NO DO NOT add WATER to CONCENTRATED ACID.
The heat generated may cause splattering.

48. Water to Acids YES
DO add ACID to WATER instead of the reverse order of addition.
The heat generated will be less, but splattering still may occur.

49. Practice Quizzes Lab Safety Practice Test
Chemistry (and Biology) Safety Quiz
Lab Safety Quiz
Safety Quiz
Short Answer Lab Safety Quiz