1.
Flammable materials, like alcohol, should never be dispensed or used near:
Correct Answer
B. An open flame.
Explanation
37. Handle flammable hazardous liquids over a pan to contain spills. Never dispense flammable liquids anywhere near an open flame or source of heat.
2.
If a laboratory fire erupts, immediately:
Correct Answer
A. Notify your instructor.
Explanation
27. Report any accident (spill, breakage, etc.) or injury (cut, burn, etc.) to the instructor immediately, no matter how trivial it may appear.
3.
Approved eye protection devices (such as goggles) are worn in the laboratory.
Correct Answer
D. Anytime heat, glassware or chemicals are used.
Explanation
23. Any time chemicals, heat, or glassware are used, students will wear laboratory goggles. There will be no exceptions to this rule!
4.
If you wear contact lenses in the school laboratory:
Correct Answer
C. Advise your instructor you wear contacts.
Explanation
24. Contact lenses should not be worn in the laboratory unless you have permission from your instructor.
5.
If you do not understand part of a direction or part of a lab procedure, you should:
Correct Answer
C. Ask the instructor before proceeding.
Explanation
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.
6.
After completing an experiment, all chemical wastes should be:
Correct Answer
B. Disposed of according to the lab instructions.
Explanation
14. Dispose of all chemical waste properly. Never mix chemicals in sink drains. Sinks are to be used only for water and those solutions designated by the instructor. Solid chemicals, metals, matches, filter paper, and all other insoluble materials are to be disposed of in the proper waste containers, not in the sink. Check the label of all waste containers twice before adding your chemical waste to the container.
7.
If a lab experiment is not completed, you should:
Correct Answer
A. Discuss the issue with your instructor.
Explanation
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. No student may work in the laboratory without an instructor present.
5. Do not eat food, drink beverages, or chew gum in the laboratory. Do not use laboratory glassware as containers for food or beverages.
8.
You are heating a substance in a test tube, you should point the test tube
Correct Answer
D. Away from all people.
Explanation
51. You will be instructed in the proper method of heating and boiling liquids in test tubes. Do not point the open end of a test tube being heated at yourself or anyone else.
9.
You are heating a piece of glassware, and now want to pick it up, you should
Correct Answer
C. Use tongs.
Explanation
52. 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.
10.
You have been injured in the laboratory, you should
Correct Answer
C. Tell your instructor at once.
Explanation
28. If you or your lab partner are hurt, immediately get the instructor’s attention.
11.
When gathering glassware and lab equipment for a lab, you should
Correct Answer
D. All possible answers.
Explanation
7. Be prepared for your work in the laboratory. Read all procedures thoroughly before entering the laboratory. 45. Examine glassware before each use. Never use chipped or cracked glassware. Never use dirty glassware.
12.
When you come into the classroom for lab you should do all of the following, except
Correct Answer
C. Put your personal material on the table neatly.
Explanation
9. 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.
13.
Personal eye glasses provide as much protection as
Correct Answer
D. None of the possible answers.
Explanation
23. Any time chemicals, heat, or glassware are used, students will wear laboratory goggles. There will be no exceptions to this rule! 24. Contact lenses should not be worn in the laboratory unless you have permission from your instructor.
14.
Long hair in the laboratory must be
Correct Answer
D. Tied back and secured with some type of hair device.
Explanation
25. Dress properly during a laboratory activity. Long hair, dangling jewelry, and loose or baggy clothing are a hazard in the laboratory. Long hair must be tied back and dangling jewelry and loose or baggy clothing must be secured. Shoes must completely cover the foot. No Crocs or flip flops allowed.
15.
In the laboratory, the following must not be worn
Correct Answer
D. All possible answer choices.
Explanation
25. Dress properly during a laboratory activity. Long hair, dangling jewelry, and loose or baggy clothing are a hazard in the laboratory. Long hair must be tied back and dangling jewelry and loose or baggy clothing must be secured. Shoes must completely cover the foot. No Crocs or flip flops allowed.
16.
The following footwear is best in the laboratory
Correct Answer
C. Closed-toed shoes.
Explanation
25. Dress properly during a laboratory activity. Long hair, dangling jewelry, and loose or baggy clothing are a hazard in the laboratory. Long hair must be tied back and dangling jewelry and loose or baggy clothing must be secured. Shoes must completely cover the foot. No Crocs or flip flops allowed.
17.
Horseplay or practical jokes in the laboratory are
Correct Answer
A. Always against the rules.
Explanation
1. Conduct yourself in a responsible manner at all times in the laboratory. 8. Never fool around in the laboratory. Horseplay, practical jokes, and pranks are dangerous and prohibited.
18.
If a piece of equipment is not working properly, stop, turn it off and tell
Correct Answer
D. Your instructor.
Explanation
46. Report damaged electrical equipment immediately. Look for things such as frayed cords, exposed wires, and loose connections. Do not use damaged electrical equipment.
19.
If acid is splashed on your skin, wash it at once with
Correct Answer
D. Plenty of water.
Explanation
29. If a chemical splashes in your eye(s) or on your skin, immediately flush with running water from the eyewash station or safety shower for at least 20 minutes. Notify the instructor immediately.
20.
When you finish working with chemicals and other lab materials always
Correct Answer
B. Wash your hands thoroughly with water.
Explanation
16. Keep hands away from face, eyes, mouth and body while using chemicals. Wash your hands with soap and water after performing all experiments. Clean all work surfaces and apparatus at the end of the experiment. Return all equipment clean and in working order to the proper storage area.
21.
Hot glass looks the same as cold glass.
Correct Answer
A. True
Explanation
52. 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. 55. When bending glass, allow time for the glass to cool before further handling. 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.
22.
All chemicals in the lab are to be considered dangerous.
Correct Answer
A. True
Explanation
31. 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.
23.
Return all unused material to their original containers.
Correct Answer
B. False
Explanation
33. Never return unused chemicals to their original containers.
24.
Work areas should be kept clean and tidy.
Correct Answer
A. True
Explanation
9. 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.
25.
Pipets are used to measure and dispense small amounts of liquids. You should draw the liquid into the pipet with your mouth.
Correct Answer
B. False
Explanation
34. Never use mouth suction to fill a pipet. Use a rubber bulb or pipet pump.
26.
Laboratory work can begin immediately upon entering the laboratory, even if the instructor is not present.
Correct Answer
B. False
Explanation
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27.
Never remove chemicals or other materials from the laboratory.
Correct Answer
A. True
Explanation
38. Never remove chemicals or other materials from the laboratory area.
28.
Chipped or cracked glassware is okay to use.
Correct Answer
B. False
Explanation
45. Examine glassware before each use. Never use chipped or cracked glassware. Never use dirty glassware.
29.
Read all procedures thoroughly before entering the laboratory.
Correct Answer
A. True
Explanation
7. Be prepared for your work in the laboratory. Read all procedures thoroughly before entering the laboratory.
30.
All unauthorized experiments in the laboratory are prohibited.
Correct Answer
A. True
Explanation
6. 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. Carefully follow all instructions, both written and oral. Unauthorized experiments are prohibited.
31.
You are allowed to enter the chemical stockroom any time you need items for a lab.
Correct Answer
B. False
Explanation
18. Students are never permitted in the science storage rooms or preparation areas unless given specific permission by their instructor.
32.
Laboratory aprons should be worn for all lab activities.
Correct Answer
A. True
Explanation
26. Lab aprons have been provided for your use and should be worn during ALL laboratory activities.
33.
It is okay to pick up broken glassware with your bare hands as long as it’s placed in the trash.
Correct Answer
B. False
Explanation
41. 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.
34.
Never leave a lit burner unattended.
Correct Answer
A. True
Explanation
50. 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.
35.
It is okay for male students who have long hair to not put it up, but female students must do so.
Correct Answer
B. False
Explanation
25. Dress properly during a laboratory activity. Long hair, dangling jewelry, and loose or baggy clothing are a hazard in the laboratory. Long hair must be tied back and dangling jewelry and loose or baggy clothing must be secured. Shoes must completely cover the foot. No Crocs or flip flops allowed.