Safety In the Science Lab

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Lab Safety Everyone Is Responsible!
Safety In the Science Lab
Essential Question Why is safety important in the
science lab?
2
General Safety Guidelines

• Be Responsible at All Times. No horseplay,
  practical jokes, pranks, etc.

• Follow all instructions carefully.

• Do not play with lab equipment until instructed
  to do so.

• Food, drink, and gum are not allowed in the
  science classroom.

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General Safety Guidelines

• Notify the teacher immediately of any accidents
  or unsafe conditions in the science classroom!

• Wash your hands with soap and water after
  experiments.

• Never do anything in the laboratory that is not
  called for in the laboratory procedures or by
  your instructor.

4
General Safety Guidelines

• Read all procedures thoroughly before entering
  the laboratory.

• 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.

• Know the locations and operating procedures of
  all safety equipment including the first aid kit,
  eyewash station, safety shower, fire
  extinguisher, and fire blanket. Know where the
  fire alarm and the exits are located.

5
General Safety Guidelines

• Dispose of all chemical waste properly. Never mix
  chemicals in sink drains. Do not use the sink as
  a trash can.

• Keep hands away from face, eyes, mouth and body
  while using chemicals or preserved specimens.

• Wash your hands with soap and water after
  performing all experiments

• Clean off your lab table when finished with 10
  clorox.
• Return equipment to the correct storage place.

6
General Safety Guidelines

• Experiments must be personally monitored at all
  times. You will be assigned a laboratory station
  at which to work. Do not wander around the room,
  distract other students, or interfere with the
  laboratory experiments of others.

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

• Any time chemicals, heat, or glassware are used,
  students will wear laboratory goggles.

7
General Safety Guidelines

• Experiments must be personally monitored at all
  times. You will be assigned a laboratory station
  at which to work. Do not wander around the room,
  distract other students, or interfere with the
  laboratory experiments of others.

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

• Any time chemicals, heat, or glassware are used,
  students will wear laboratory goggles.

8
Using Chemicals

• Check the label on chemical bottles twice before
  removing any of the contents. Take only as much
  chemical as you need.

• Never return unused chemicals to their original
  containers.

• 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.

9
Using Chemicals

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

• Never look directly into a test tube or
  container.

• Hold test tubes away from you and other students.

10
Handling Glassware andEquipment

• 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.

• 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.

• Examine glassware before each use. Never use
  chipped or cracked glassware. Never use dirty
  glassware.

• Do not immerse hot glassware in cold water it
  may shatter

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Heating Substances

• 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. Do not
  put any substance into the flame unless
  specifically instructed to do so. Never reach
  over an exposed flame. Light gas (or alcohol)
  burners only as instructed by the teacher.

• 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.

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Heating Substances

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

• 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.

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Whats Wrong With This Picture?
14
Whats Wrong With These Statements?

• Hal says that his teacher is solely responsible
  for preventing laboratory accidents.
• Keshia started the lab activity before reading it
  through completely.
• Ricardo decided to do a lab activity that he read
  about in a library book before the teacher came
  into the classroom.
• Stephanie says that the safety goggles mess up
  her hair and give her raccoon eyes. She refuses
  to wear them.
• Barbie and Ken accidentally break a beaker full
  of some chemical. Instead of risking getting in
  trouble they quickly clean up the mess with paper
  towel and throw it in the garbage.

15
Any Questions?

• REMEMBER
• Carefully read through the entire safety
  contract and sign.
• Have your parents read and sign your safety
  contract.
• Study for the safety quiz next week!