CHEM 2000/2002
| Experiments
for the Elementary School Classroom |
 |
You are required to read the following checklist and check each
item only when you thoroughly understand it. Ask your instructor
to clarify any points you do not understand.
- Eye
protection must be worn at all times. Safety goggles are
required. It is not advisable to wear contact lenses
unless they are absolutely necessary for eyesight
correction.
- Gloves
should be used when handling toxic or corrosive
chemicals.
- Know
the location and how to use the fire extinguisher, fire
blanket, eyewash fountain, and safety shower for your
lab.
- Smoking,
eating, drinking, or applying cosmetics are not allowed
in the lab; wash hands frequently when working with
chemical substances and at the end of each lab period.
- Bare
feet are not allowed in the lab. Long hair should be tied
back. Special care should be taken to keep hair and
beards away from flames, especially when lighting burners
and taking melting points.
- Never
use an open flame in the vicinity of flammable
substances.
- Always
add boiling chips before heating a liquid.
- Never
heat a system having no vent to the air.
- Keep
your face away from the opening of the vessel when mixing
reagents, when applying heat to a reaction mixture, or
when testing for an odor.
- Never
point a vessel toward your face or toward another person,
especially when it is being heated.
- Evaporate
solvents in the fume hood.
- Always
use a pipette bulb when pipetting.
- Clamp
all apparatus firmly, especially when heating, cooling,
or performing vacuum filtration.
- When
inserting glass tubing into stoppers, lubricate the glass
with glycerin and wrap the tubing in a towel to protect
your hands if it should break.
- Flammable
chemicals are not to be stored in your locker nor are
unlabeled containers of chemicals stored. Labels should
include a description of the contents (compound name) and
a page reference to your lab notebook.
- All
reagents and solvents are to be returned to their proper
places immediately when no longer in use. Unused material
should be placed into a proper disposal container.
- At
the end of each lab period, clear your countertop and
wipe it with a damp sponge. Clean up all spills promptly.
Mercury spills (even a broken thermometer) or major
spills of acids or bases are to be reported immediately
to the instructor or to the Stockroom.
- Immediately
wash off all chemicals spilled on the skin with large
amounts of water.
- Find
out the hazards of each experiment, either by carefully
reading the lab book or handout for the experiment, or by
consulting your instructor, before you begin work.
- The
campus emergency phone number is 9911. This number may be
used to report fires, summon an ambulance or the police.
- Students
should never be in the laboratory at unscheduled times
without written permission. At least two responsible
persons must be in the laboratory when one is doing an
experiment. An instructor must be at least within hearing
distance of the person doing the experiment.
Hazard
warning:
--- the solids,
liquids and gaseous substances, and combinations thereof, used in
experiments are potentially hazardous in one or more of the
following ways:
- they
may be irritants to, or have caustic action on, the skin,
mucous membranes, lungs, and eyes
- they
may be systemic poisons
- they
may be flammable or explosive
Origin
of hazards: Unexpected and possibly dangerous situations can
result from one or more of the following:
- incorrect
transfer and handling procedures.
- incorrect
reaction temperatures
- using
incorrect amounts of chemicals
- incorrect
order of addition of two or more substances
- incorrect
rate of addition of two or more substances
- using
one or more incorrect substances
- incorrect
disposal of chemicals
- incorrect
dilution of concentrated acids (Reminder: acids are
ALWAYS added to water slowly, carefully, with stirring).
(Cut at
the dotted line and hand in the signed portion of this page to
the Stockroom).
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I have read and understood all of the foregoing safety
precautions.
NAME:_____________________________________________
DATE:______________________
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j byrd
jim@chem.csustan.edu
m perona
mike@chem.csustan.edu