Safety
Flammable materials, like alcohol, should never be dispensed or used near:
A. an open door. B. an open flame. C. another student. D. a sink.
What is B. You should never leave flammable substances near an open flame. A combustion, injuries and/or damages may occur.
Horseplay or practical jokes in the laboratory are
A. always against the rules. B. okay. C. not dangerous. D. okay if you are working alone.
What is A. Horseplay and practical jokes are NEVER allowed in the lab.
The following footwear is best in the laboratory.
A. sandals B. open-toed shoes C. closed-toed shoes D. shoes appropriate for the weather
What is C: closed-toed shoes. By covering your foot entirely, you have reduced the risk of being injured by a spill or by something falling onto your feet (lab equipment may be heavy!)
You are heating a piece of glass and now want to pick it up. You should
A. use a rag or paper towels. B. pick up the end that looks cooler. C. use tongs. D. pour cold water on it.
What is C: use tongs. Using tongs removes direct contact with the hot test tubes and minimizes risks associated with heated glass.
If a laboratory fire erupts, immediately
A. notify your instructor. B. run for the fire extinguisher. C. throw water on the fire. D. open the windows.
What is A. In the event that a fire is to start to spread, immediately notify your instructor so that they can handle the situation properly.
If a piece of equipment is not working properly, stop, turn it off, and tell
A. the custodian. B. your lab partner. C. your best friend in the class. D. the science instructor.
What is D. If something is not working properly, please discontinue use and turn off the equipment. Immediately report the issue to your science instructor.
In a laboratory, the following should not be worn.
A. loose clothing. B. dangling jewelry. C. sandals. D. all of the above.
What is D. No item listed is appropriate to be worn in the laboratory, so please do not try to wear any of these items during lab.
When gathering glassware and equipment for an experiment, you should
A. read all directions carefully to know what equipment is necessary. B. examine all glassware to check for chips or cracks. C. clean any glassware that appears dirty. D. All of the above.
What is D: all of the above. Glassware is best kept safe by inspection before, during and after use.
You are heating a substance in a test tube. Always point the open end of the tube
A. toward yourself. B. toward your lab partner. C. toward another classmate. D. away from all people.
What is D. Any time you are heating a substance in a test tube, point the tube AWAY from all people.
You have been injured in the laboratory (cut, burn, etc.). First you should
A. visit the school nurse after class. B. see a doctor after school. C. tell the science instructor at once. D. apply first aid yourself.
What is C. In the event of an injury, no matter how serious, you should report the incident to your instructor immediately.
Long hair in the laboratory must be:
A. cut short. B. held away from the experiment with one hand. C. always neatly groomed. D. tied back or kept entirely out of the way with a hair band, hairpins, or other confining device.
What is D: keep your hair entirely out of the way when working in the lab. Hair should be confined in the lab to reduce risk.
True or False: Never remove chemicals or other equipment from the laboratory.
What is TRUE. You should never remove chemicals or equipment from the lab.
If you wear contact lenses in the school laboratory,
A. take them out before starting the lab. B. you do not have to wear protective goggles. C. advise your science instructor that you wear contact lenses. D. keep the information to yourself.
What is a C. If you wear contact lenses, please inform your instructor. This will help ensure proper lab safety.
If an acid is splashed on your skin, wash at once with
A. soap. B. oil. C. weak base. D. plenty of water.
What is D: Plenty of water. Acid can cause serious injury, so it is important to wash it off immediately. If you do spill acid on your skin, use water to wash it off and then immediately notify your instructor.
Approved eye protection devices (such as goggles) are worn in the laboratory
A. to avoid eye strain. B. to improve your vision. C. only if you don’t have corrective glasses. D. any time chemicals, heat or glassware are used.
What is D: any time chemicals, heat or glassware are used - it is necessary to use safety goggles.
True or False:
All unauthorized experiments are prohibited.
What is TRUE: ALL unauthorized experiments are STRICTLY prohibited
If you do not understand a direction or part of a lab procedure, you should
A. figure it out as you do the lab. B. try several methods until something works. C. ask the instructor before proceeding. D. skip it and go on to the next part.
What is C. If you are unsure about something in the lab, ask your instructor the clarify the instruction before continuing. This practice helps ensure safety and helps make the best use of the lab time.
When you finish working with chemicals, biological specimens, and other lab substances, always
A. treat your hands with skin lotion. B. wash your hands thoroughly with soap and water. C. wipe your hands on a towel. D. wipe your hands on your clothes.
What is B: wash your hands thoroughly with water. Washing your hands can remove residual substances not visible to the eye. This is a best practice that helps minimize post-lab risks.
Personal eyeglasses provide as much protection as
A. a face shield. B. safety glasses. C. splashproof chemical goggles. D. none of the above.
What is D: None of the above. Personal eyeglasses will not keep you safe in the lab. Please follow safety standards and use appropriate safety goggles for the lab you are participating in.
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
A. lubricating the tubing with water or glycerin. B. using a towel or cotton gloves for protection. C. twisting the tubing and stopper carefully. D. all of the above.
What is D: all of the above. Each of these practices will increase your chances of being successful in the lab and will help prevent hazards.