U1, #1: Lab Safety

If a laboratory fire erupts, immediately

• notify your instructor
•  run for the fire extinguisher
• throw water on the fire
•  open the windows

Approved eye protection devices (such as goggles) are worn in the laboratory

•  to avoid eye strain
• to improve your vision
• only if you don’t have corrective glasses
•  any time chemicals, heat or glassware are used

If you wear contact lenses in the school laboratory

• take them out before starting the lab
• you do not have to wear protective goggles
•  advise your science instructor that you wear contact lenses
•  keep the information to yourself

 After completing an experiment, all chemical wastes should be

• taken home
• dumped in the sink
• disposed of according to your instructor’s directions
• left at your lab station for the next class

 If a lab experiment is not completed, you should 

• make up some results
• come in during lunch and finish while eating lunch
• sneak in after school and work alone
• discuss the issue with your instructor

You are heating a substance in a test tube. Always point the open end of the tube 

• away from all people
• toward another classmate
• toward your lab partner
• toward yourself

You have been injured in the laboratory (cut, burn, etc.). First you should

• apply first aid yourself
• tell the science instructor at once
• see a doctor after school
• visit the school nurse after class

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 

• all of the choices
•  twisting the tubing and stopper carefully
• using a towel or cotton gloves for protection
• lubricating the tubing with water or glycerin

 Personal eyeglasses provide as much protection as

• none of these answers
• splashproof chemical goggles
• safety glasses
• a face shield

Long hair in the laboratory must be 

• tied back or kept entirely out of the way with a hair band, hairpins, or other confining device
• always neatly groomed
• held away from the experiment with one hand
• cut short