Solutions
1. Flammable materials, like alcohol, should never be dispensed
or used near
A. an open door.
B. an open flame.
C. another student.
D. a sink. Correct Answers An open flame
2. If a laboratory fire erupts, immediately
A. notify your instructor.
B. run for the fire extinguisher.
C. throw water on the fire.
D. open the windows. Correct Answers Notify your instructor
3. Approved eye protection devices (such as goggles) are worn
in the laboratory
A. to avoid eye strain.
B. to improve your vision.
C. only if you don't have corrective glasses.
D. any time chemicals, heat or glassware are used. Correct
Answers Any time chemicals, heat or glassware are used
4. If you wear contact lenses in the school laboratory,
A. take them out before starting the lab.
B. you do not have to wear protective goggles.
C. advise your instructor that you wear contact lenses.
D. keep the information to yourself. Correct Answers Advise
your instructor that you wear contact lenses
,5. If you do not understand a direction or part of a lab procedure,
you should
A. figure it out as you do the lab.
B. try several methods until something works.
C. ask the instructor before proceeding.
D. skip it and go on to the next part. Correct Answers Ask the
instructor before proceeding
6. After completing an experiment, all chemical wastes should
be
A. left at your lab station for the next class.
B. disposed of according to your instructor's directions.
C. dumped in the sink.
D. taken home. Correct Answers Disposed of according to your
instructor's directions
7. If a lab experiment is not completed, you should
A. discuss the issue with your instructor.
B. get the data from someone else.
D. make up some results. Correct Answers Discuss the issue
with your instructor
8. You are heating a substance in a test tube. Always point the
open end of the tube
A. toward yourself.
B. toward your lab partner.
C. toward another classmate.
D. away from all people. Correct Answers Away from all
people
, 9. You are heating a piece of glass and now want to pick it up.
You should
A. use a rag or paper towels.
B. pick up the end that looks cooler.
C. use tongs.
D. pour cold water on it. Correct Answers Use tongs
10. You have been injured in the laboratory (cut, burn, etc.).
First you should
A. visit the health center after class.
B. see a doctor after school.
C. tell the instructor at once.
D. apply first aid yourself. Correct Answers Tell the instructor
at once
11. When gathering glassware and equipment for an experiment,
you should
A. read all directions carefully to know what equipment is
necessary.
B. examine all glassware to check for chips or cracks.
C. clean any glassware that appears dirty.
D. All of the above. Correct Answers All of the above
12. You want to place a piece of glass tubing into a rubber
stopper after the tubing has been fire polished and cooled. This
is best done by
A. lubricating the tubing with water or glycerin.
B. using a towel or cotton gloves for protection.
C. twisting the tubing and stopper carefully.
D. all of the above. Correct Answers All of the above