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Do’s And Don’ts in the Lab!!!
1. Report all accidents regardless of how minor to your teacher.
2. Work in the lab only when the teacher is present or when you have permission to do so.
3. Never indulge in horseplay or behavior that could lead to injury of others.
4. Before beginning work in lab, clean the lab bench top and your glassware.
5. Use goggles and lab aprons when instructed to do so.

Carol never wore her safety goggles. by E-Dubya.
Carol never wore her safety goggles. by E-Dubya.

6. Due to the dangers of broken glass and corrosive liquid spills in the lab, open sandals or bare feet are not permitted in the lab.
7. Learn the location and proper usage of the eyewash fountain, fire extinguisher, safety shower, fire alarm box, office intercom button, evacuation routes, clean-up brush and dust pan, glass/chemical disposal can.
8. For minor skin burns, immediately plunge the burned area into cold water and notify the teacher.
9. If you get any chemical in your eye, immediately wash the eye with the eye-wash fountain and notify the teacher.
10. Never look directly into a test tube. View the contents from the side.
11. Never smell a material in a test tube or flask directly. Instead, with your hand, "fan" some of the fumes to your nose carefully.
12. Immediately notify the teacher of any chemical spill and clean up the spill as directed.
13. Never take chemical stock bottles to the lab benches.

14. Use equipment only as directed:
a. never place chemicals directly on the pan balances.
b. use glycerin when inserting glass tubing into rubber stoppers.
c. be cautious of glassware that has been heated.
d. add boiling chips to liquid that is to be heated before heating.
e. point test tubes that are being heated away from you and others.
15. Never taste any material in the lab
16. Food, drink and gum are prohibited in lab.
17. Never add water to concentrated acid solutions. The heat generated may cause spattering. Instead, as you stir, add the acid slowly to water.
18. Read the label on chemical bottles at least twice before using the chemical. Many chemicals have names that are easily confused.
19. Return all lab materials and equipment to their proper places after use.
20. Upon completion of work, wash and dry all equipment, your lab bench and your clean-up area.


So what have we learned


1. With regard to safe practices in the lab, your most important general responsibility in the science lab is
A. Never work alone in the lab.
B. Keep yourself and others from being injured.
C. Tie back any loose hair, roll up loose sleeves, and put on any protective equipment your teacher
requires before beginning a lab.
D. Read the lab activity completely before coming to lab.
2. While working with chemicals in the lab, Joanna found a chipped glass beaker. She should
A. use it.
B. put tape over the chip.
C. put it in the trash.
D. put it in the container for broken laboratory glassware.
3. Which of the following is the first and most important step in protecting your eyes while in the laboratory?
A. Never use direct sunlight to illuminate a microscope.
B. If you get a chemical or any fluid in your eyes, immediately go to an eyewash station and flush your eyes and eyelids for 15 minutes.
C. Always wear approved safety goggles while in the lab, even if you are not conducting an experiment at the time.
D. Do not wear contact lenses in the lab.
4. What is the best form of fire safety?
A. a water hose
B. an extinguisher
C. the fire department
D. fire prevention
5. In terms of lab safety, is it better to have really great safety equipment to clean up an accident or to prevent an accident?


6. You must be careful when handling and disposing of chemicals and microorganisms. Which of the following statements should you follow if you do not want to harm the environment?
A. You may pour chemicals down the drain, but you must ask your teacher before disposing of any bacteria used in a lab activity.
B. You may always throw pipets used in a lab activity in the trash can.
C. When working with bacteria, you should never completely remove the cover from a Petri dish.
D. After working with bacteria, you should rinse all glassware with water.
7. When you clean up after a laboratory exercise
A. Dispose of all used solutions by carefully diluting them with water in the sink.
B. Be sure to dispose of all cracked or chipped glass containers in the trash.
C. Return all unused chemicals to their properly labeled containers.
D. Dispose of broken glass in a special container labeled for this purpose.
8. What is the proper procedure for handling chemicals in the laboratory?
A. If you don’t know what a chemical is, taste it to find out.
B. If you have leftover chemicals at the end of your experiment, return them to their original containers.
C. When diluting an acid, pour the acid into water. Never pour water into acid.
D. Dispose of all chemicals down the drain.
9. Which of the following is a good laboratory safety practice?
A. Use your hands to pick up hot glassware.
B. Always wear safety goggles to protect your eyes in any activity involving chemicals, flames or heating.
C. Dispose of chemicals and other laboratory materials used in an activity by throwing them in the trash.
D. To test a chemical for odor, inhale the fumes directly from the container.
10. Regarding heating materials in the laboratory, which of the following statements is NOT true?
A. When heating chemicals in test tube, point the opening of the test tube away from yourself and others.
B. Work with chemicals that produce gases and vapors only in a well-ventilated room.
C. Use hot plates, not open flames, for heating materials.
D. Use tongs or insulated gloves when handling an object being heated.


So Remember....


sources: Taks Book
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