CHEMISTRY LAB SAFETY RULES


Chemistry is a hands-on laboratory class.  You will be doing many laboratory activities which require the use of hazardous chemicals.  Safety in the chemistry classroom is the #1 priority for students, teachers and parents.  To ensure a safe science classroom, a list of rules has been developed and provided to you in this student safety contract.  These rules must be followed at all times.  Print out a second copy to keep in your science notebook as a constant reminder of the safety rules.



1. Conduct yourself in a responsible manner at all times in the laboratory. 

2. Follow all written and verbal instructions carefully.  If you do not understand a direction or part of a
    procedure, ask the instructor before proceeding.
3. Never work alone.

4. No student may work in the laboratory without an instructor present.

5. When first entering a science room, do not touch any equipment, chemicals, or other materials in the
    laboratory area until you are instructed to do so.

6. Do not eat food, drink beverages, or chew gum in the laboratory.

7. Do not use laboratory glassware as containers for food or beverages.

8. Perform only those experiments authorized by the instructor.  Never do anything in the laboratory that is not
    called for in the laboratory procedures or by your instructor.

9. Carefully follow all instructions, both written and oral.

10. Unauthorized experiments are prohibited.

11. Be prepared for your work in the laboratory.

12. Read all procedures thoroughly before entering the laboratory.

13. Never fool around in the laboratory.  Horseplay, practical jokes, and pranks are dangerous and prohibited.

14. Observe good housekeeping practices.  Work areas should be kept clean and tidy at all times.  Bring only
      your laboratory instructions, worksheets, and/or reports to the work area.  Other materials (books, purses,
      backpacks, etc.) should be stored in the classroom area.

15. Students are never permitted in the science storage rooms or preparation areas unless given specific
      permission by their instructor.

16. Know what to do if there is a fire drill during a laboratory period.  Containers must be closed, gas valves
      turned off, fume hoods turned off, and any electrical equipment turned off.

17. If you have a medical condition (e.g., allergies, pregnancy, etc.), check with your physician prior to working
      in lab.



1. Any time chemicals, heat, or glassware are used, students will wear laboratory goggles.  There will be no
    exceptions to this rule!

2. Contact lenses should not be worn in the laboratory unless you have permission from your instructor.

3. Dress properly during a laboratory activity.

4. Long hair must be tied back.  Dangling jewelry and loose or baggy clothing must be secured.

5. Shoes must completely cover the foot.  No sandals allowed.

6. Lab aprons have been provided for your use and should be worn during laboratory activities.



1. Report any accident (spill, breakage, etc.) or injury (cut, burn, etc.) to the instructor immediately, no matter
    how trivial it may appear.

2. If you or your lab partner are hurt, immediately yell out “Code one, Code one” to get the instructor’s

3. If a chemical splashes in your eye(s) immediately flush with running water from the eyewash station for at
    least 20 minutes.  If a chemical splashes on your skin, immediately flush with running water from the safety  
    shower for at least 20 minutes.  Notify the instructor immediately.
4. When mercury thermometers are broken, mercury must not be touched.  Notify the instructor immediately.



1. All chemicals in the laboratory are to be considered dangerous.  Do not touch, taste, or smell any chemicals
    unless specifically instructed to do so.  The proper technique for smelling chemical fumes will be
    demonstrated to you.

2. Check the label on chemical bottles twice before removing any of the contents.

3. Take only as much chemical as you need.

4. Never return unused chemicals to their original containers.

5. Never use mouth suction to fill a pipet.  Use a rubber bulb or pipet pump.

6. When transferring reagents from one container to another, hold the containers away from your body.

7. Acids must be handled with extreme care.  You will be shown the proper method for diluting strong acids. 
    Always add acid to water, swirl or stir the solution and be careful of the heat produced, particularly with
    sulfuric acid.

8. Handle flammable hazardous liquids over a pan to contain spills.  Never dispense flammable liquids anywhere
    near an open flame or source of heat.

9. Never remove chemicals or other materials from the laboratory area.

10. Take great care when transporting acids and other chemicals from one part of the laboratory to another. 
      Hold them securely and walk carefully.



1. Never handle broken glass with your bare hands.  Use a brush and dustpan to clean up broken glass.  Place
    broken or waste glassware in the designated glass disposal container.

2. Fill wash bottles only with distilled water and use only as intended, e.g., rinsing glassware and equipment, or
    adding water to a container.

3. When removing an electrical plug from its socket, grasp the plug, not the electrical cord.  Hands must be
    completely dry before touching an electrical switch, plug, or outlet.

4. Examine glassware before each use.  Never use dirty, chipped, or cracked glassware.

5. Report damaged electrical equipment immediately.  Look for things such as frayed cords, exposed wires, and
    loose connections.  Do not use damaged electrical equipment.

6. If you do not understand how to use a piece of equipment, ask the instructor for help.

7. Do not immerse hot glassware in cold water; it may shatter.



1. Exercise extreme caution when using a gas burner.  Take care that hair, clothing and hands are a safe
    distance from the flame at all times.

2. Do not put any substance into the flame unless specifically instructed to do so.

3. Never reach over an exposed flame.

4. Light gas burners only as instructed by the teacher.

5. Never leave a lit burner unattended.  Never leave anything that is being heated or is visibly reacting
    unattended.  Always turn the burner or hot plate off when not in use.

6. Do not point the open end of a test tube being heated at yourself or anyone else.

7. Heated metals and glass remain very hot for a long time.  They should be set aside to cool and picked up
    with caution.  Use tongs or heat-protective gloves if necessary.

8. Never look into a container that is being heated.

9. Do not place hot apparatus directly on the laboratory desk.  Always use an insulating pad.  Allow plenty of
    time for hot apparatus to cool before touching it.

10. Hot and cold glass have the same visual appearance.  Determine if an object is hot by bringing the back of
      your hand close to it prior to grasping it.


The secret word for quick quiz #1 is “Thailand”.


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