Podcast
Questions and Answers
Hot glass looks the same as cold glass.
Hot glass looks the same as cold glass.
True (A)
All chemicals in the lab are to be considered dangerous.
All chemicals in the lab are to be considered dangerous.
True (A)
Return all unused chemicals to their original containers.
Return all unused chemicals to their original containers.
False (B)
Work areas should be kept clean and tidy.
Work areas should be kept clean and tidy.
It's okay to use your mouth to draw liquid chemicals into a pipette.
It's okay to use your mouth to draw liquid chemicals into a pipette.
Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.
Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.
Never remove chemicals or other equipment from the laboratory.
Never remove chemicals or other equipment from the laboratory.
Chipped or cracked glassware is okay to use.
Chipped or cracked glassware is okay to use.
Read all procedures thoroughly before performing a lab.
Read all procedures thoroughly before performing a lab.
All unauthorized experiments are prohibited.
All unauthorized experiments are prohibited.
You are allowed to leave backpacks in the middle of the floor during lab.
You are allowed to leave backpacks in the middle of the floor during lab.
Laboratory aprons should be worn during all lab activities.
Laboratory aprons should be worn during all lab activities.
It's okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.
It's okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.
Never leave a lit burner unattended.
Never leave a lit burner unattended.
Always behave in a proper manner during lab work.
Always behave in a proper manner during lab work.
It's okay to wear sandals in the lab.
It's okay to wear sandals in the lab.
Always dispose of unused chemicals down the sink.
Always dispose of unused chemicals down the sink.
Return unused chemicals to the reagent bottle it came from.
Return unused chemicals to the reagent bottle it came from.
It's okay to lift up your goggles onto your forehead if they are uncomfortable.
It's okay to lift up your goggles onto your forehead if they are uncomfortable.
If someone catches their clothes on fire, blow on it to put it out.
If someone catches their clothes on fire, blow on it to put it out.
Know the location of all safety equipment and how to use it.
Know the location of all safety equipment and how to use it.
Report all problems to the teacher.
Report all problems to the teacher.
Drink from a beaker if you get thirsty.
Drink from a beaker if you get thirsty.
Pick up large pieces of broken glass on the floor immediately with your hands.
Pick up large pieces of broken glass on the floor immediately with your hands.
Use the eyewash for 15 seconds if you get a chemical in your eye.
Use the eyewash for 15 seconds if you get a chemical in your eye.
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Study Notes
Laboratory Safety Principles
- Hot glass appears identical to cold glass, posing a risk of burns.
- All chemicals must be treated as hazardous, regardless of identity.
- Unused chemicals should not be returned to their original containers to prevent contamination.
- Laboratory workspaces must remain clean and organized to ensure safety.
Handling Chemicals and Equipment
- Using one’s mouth to draw chemicals into a pipette is strictly forbidden.
- Work in the laboratory should not commence until the instructor is present for safety supervision.
- Removal of chemicals or equipment from the lab is prohibited to maintain safety protocols.
Glassware and Protective Gear
- Chipped or cracked glassware must not be used to avoid accidents.
- Properly reading lab procedures is essential before conducting experiments.
- Laboratory aprons are required for all lab activities to protect personal clothing.
Behavior and Conduct
- Lit burners must never be left unattended to prevent fire hazards.
- Maintaining proper behavior and attentiveness is crucial during lab work.
- Wearing sandals in the laboratory is not permitted due to safety concerns.
Chemical Disposal and Emergency Procedures
- Never dispose of unused chemicals in the sink; follow established disposal procedures.
- Returning chemicals to their original reagent bottles is unsafe and should be avoided.
- Goggles should not be lifted to the forehead; they must be worn correctly at all times.
Emergency Awareness and Reporting
- Correctly using safety equipment and knowing their locations is essential for readiness.
- Any problems or safety concerns must be reported to the teacher immediately.
- Drinking from lab glassware is not allowed, as it poses health risks.
Broken Glass and Eye Safety
- Large pieces of broken glass should not be picked up with hands; use appropriate tools.
- In case of a chemical eye exposure, the eyewash should be used for a full 15 minutes.
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