The document provides safety guidelines and rules for a school laboratory. It lists 14 rules such as not eating or drinking in the lab, wearing protective gear, and reporting any accidents. It also includes true/false questions about lab safety and matches 10 lab activities with the appropriate safety symbols. The overall message is that laboratories require strict safety procedures to prevent accidents, injuries, and protect students from hazardous chemicals and equipment.

1. Laboratory Safety
RULE REASON
Never eat or drink in the lab. Do not eat or
drink from laboratory glassware.
You might accidentally eat something hazardous.
Traces of harmful chemicals could be left in the
glassware.
Do not run or play roughly in the lab. Do
not play practical jokes in the lab.
You might cause an accident, hurt yourself
or others. Pranks could cause a dangerous
situation. For example, switching chemicals
might cause a fire or explosion.
Do not perform experiments unless
instructed by your teacher. Don't
mix chemicals randomly for "fun."
You might cause an accident, you might not have
materials to carry out your experiment, or you
might produce a dangerous substance or an
explosive by accident.
If an accident occurs, report it to your
instructor promptly.
Even minor accidents may require first aid to
prevent further harm.
Wear appropriate protective gear
as instructed by the lab procedure
directions or your instructor.
Fragments of glass or harmful substances can
damage eyes. Gloves keep chemicals off your
skin and add a layer of protective against sharp
objects. Lab aprons protective your clothing.
Read labels on containers with care
before using their contents.
Materials with similar names may react very
differently.
Carry microscopes and other pieces of
equipment with both hands, using one
hand to support the instrument from
underneath.
It is easy to drop a heavy piece of equipment if
you are jarred or surprised or simply trip.
This could hurt you as well as what you are
carrying!

2. Follow instructions with care about the
handling and management of live
animals. Wash your hands after handling
animals or animal cages.
The care and safety of live animals should
always be of major concern. Your hands
may have come in contact with
fecal material or other matter in the cage that
may cause you harm.
Don't perform activities that have not
been approved by your instructor.
Unapproved experiments have not been assessed
for potential hazards. Prevention of harm to
yourself and those around you needs to be a top
priority when working in the lab.
Learn the meaning of the safety
symbols used in the lab.
Symbols will remind you of hazards and how
to prevent accidents and protect yourself.
Always wash your hands after each
laboratory experiment.
It is a good habit to avoid risk of exposure to
anything that may hurt your skin or damage
your tissue in any way.
Read labels on containers with care
before using their contents.
Materials with similar names or concentrations
may react very differently.
Read instructions for lab procedures before
beginning. Follow the directions exactly. If
you are unsure about any part of the
instructions, ask your instructor for help.
Mixing some combinations of materials
(including water) can cause accidents. Heating
certain materials can cause accidents. A small
change in a method can make a big change in
what happens.
Dispose of lab materials according to your
instructor's directions.
Chemicals and other potentially harmful objects
need to be disposed of properly so they are not a
hazard to others or to the environment.

3. Laboratory Safety Awareness
TRUE/FALSE
The statements below may or may not be correct. Read each statement. If it is correct, write the
word True in the space provided to the left of the statement. If the statement is false, write False in
the space provided.
1. The laboratory is an ideal place for practical jokes.
2. Never leave an open flame unattended.
3. Always read the label on a container before removing any of the material in
the container.
4. It is a good idea to show your independence by performing experiments
that have not been approved by your teacher.
5. Always return unused chemicals to their original containers so as not to
waste them.
6. It is generally necessary to place your nose directly over a container to smell
the material in the container.
7. If you wear contact lenses, it is not necessary to wear safety goggles in
the laboratory.
8. If you are not working with chemicals, it is all right to wear open sandals in
the laboratory.
9. The open end or mouth of a test tube should never be pointed toward you
or anyone else.
10. When anything spills in the laboratory, the teacher should be notified
right away.
11. It is necessary to report even minor laboratory accidents to the teacher.
12. Long hair should be tied back when working in the laboratory with chemicals.
13. It is safest to heat the contents of test tubes in a flame while seated.
14. The location of a fire extinguisher and fire blanket should be known by
everyone in the laboratory.

4. Lab Safety Awareness
VERBAL
Match the safety symbol or symbols (hazard or protection) and the activity or activities related to
awareness of laboratory safety. More than one symbol may go with one activity and symbols
may be used more than once.
Lab Activity Hazard (answers)
1. Using a scalpel to dissect a flower (Sharpness, Plants)
2. Removing frogs from their tank to weigh them . (Animals)
3. Collecting plant specimens (Plants)
4. Inserting a thermometer into a rubber stopper (Glassware or Sharpness)
5. Placing an unknown solid in acid (Poison, Gas)
6. Heating a solution in a test tube (Flammable, Poison, Glassware)
7. Using a hot plate to check the boiling point of a solution (Flammable, Poison, Glassware)
8. Using a flame to sterilize a dissecting needle (Flammable, Sharpness)
9. Placing a hot test tube in a beaker of room temperature water (Flammable, Glassware)
10. Cutting a piece of rubber tubing (Sharpness)