Question

science laboratory safety test

1. 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.

1. 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.

1. 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 dont have corrective glasses.
d. any time chemicals, heat or glassware are used.

1. 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.

1. 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.

1. after completing an experiment, all chemical wastes should be

a. left at your lab station for the next class.
b. disposed of according to your instructors directions.
c. dumped in the sink.
d. taken home.

1. if a lab experiment is not completed, you should

a. discuss the issue with your instructor.
b. sneak in after school and work alone.
c. come in during lunch and finish while eating lunch.
d. make up some results.

1. 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.

1. 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.

1. 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.

1. 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.

1. 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.

1. personal eyeglasses provide as much protection as

a. a face shield.
b. safety glasses.
c. splashproof chemical goggles.
d. none of the above.

1. 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.

1. in a laboratory, the following should not be worn

a. loose clothing.
b. dangling jewelry.
c. sandals.
d. all of the above.

1. the following footwear is best in the laboratory

a. sandals.
b. open - toed shoes.
c. closed - toed shoes.
d. shoes appropriate for the weather.

Explanation:

1. Flammable materials like alcohol are highly combustible and should never be used near an open flame to prevent fire - related accidents.
2. In case of a laboratory fire, the first step is to notify the instructor as they are trained to handle such situations and can guide on the appropriate actions.
3. Approved eye - protection devices such as goggles are worn whenever chemicals, heat, or glassware are used to protect the eyes from potential hazards like chemical splashes or flying debris.
4. If wearing contact lenses in the school laboratory, it is important to advise the science instructor as contact lenses can pose additional risks in a lab environment.
5. If a direction or part of a lab procedure is not understood, asking the instructor before proceeding is the correct approach to ensure safety and proper execution of the experiment.
6. Chemical wastes should be disposed of according to the instructor's directions as improper disposal can lead to environmental and safety issues.
7. If a lab experiment is not completed, discussing the issue with the instructor is the right thing to do as they can provide guidance on how to proceed.
8. When heating a substance in a test - tube, the open end should be pointed away from all people to prevent any hot substances from splashing out and causing harm.
9. When picking up a heated piece of glass, using tongs is the safest option as they provide a safe grip without the risk of burns.
10. If injured in the laboratory, telling the science instructor at once is crucial so that immediate and appropriate first - aid or medical attention can be arranged.
11. When gathering glassware and equipment for an experiment, reading directions carefully, examining glassware for chips or cracks, and cleaning dirty glassware are all necessary steps for a safe and successful experiment.
12. Placing a piece of glass tubing into a rubber stopper is best done by lubricating the tubing with water or glycerin to ease insertion and prevent breakage.
13. Personal eyeglasses do not provide the same level of protection as splashproof chemical goggles which are designed to protect against chemical splashes.
14. Long hair in the laboratory must be tied back or kept entirely out of the way with a hair band, hairpins, or other confining devices to prevent it from getting caught in equipment or coming into contact with chemicals.
15. Loose clothing, dangling jewelry, and sandals should not be worn in the laboratory as they can pose safety hazards such as catching fire or getting caught in equipment.
16. Closed - toed shoes are the best footwear in the laboratory as they provide protection against spills and falling objects.

Answer:

1. B. an open flame.
2. A. notify your instructor.
3. D. any time chemicals, heat or glassware are used.
4. C. advise your science instructor that you wear contact lenses.
5. C. ask the instructor before proceeding.
6. B. disposed of according to your instructor's directions.
7. A. discuss the issue with your instructor.
8. D. away from all people.
9. C. use tongs.
10. C. tell the science instructor at once.
11. D. All of the above.
12. A. lubricating the tubing with water or glycerin.
13. D. none of the above.
14. D. tied back or kept entirely out of the way with a hair band, hairpins, or other confining device.
15. D. all of the above.
16. C. closed - toed shoes.