Personal Safety
Why is it important to wear closed-toe shoes in the lab?
Closed-toe shoes protect your feet from spills, falling glass, and other lab hazards.
What should you do if you accidentally spill a chemical on your skin?
Notify the teacher or lab supervisor and immediately rinse the affected area with plenty of water for at least 15 minutes.
What is the first thing you should do if a fire breaks out in the lab?
Alert the teacher immediately, pull the fire alarm if needed, and follow evacuation procedures.
Why should you always inspect glassware before using it?
To check for cracks or chips that could cause the glassware to break under heat or pressure.
Why should you never work alone in the laboratory?
Having others present ensures help is available immediately in case of an accident or emergency.
Why should you always tie back long hair and secure loose clothing in the lab?
To prevent them from catching fire, dipping into chemicals, or getting caught in equipment.
Why should you never smell a chemical directly?
Directly inhaling chemicals can damage your respiratory system. Instead, use the "wafting" technique to safely detect odors.
Where should you go if the fire alarm sounds during a lab?
Leave all materials behind, calmly exit the building using the designated route, and meet at the assigned safety area.
What is the safe way to heat a test tube over a flame?
Point the open end away from yourself and others, and move the test tube slowly through the flame to distribute heat evenly.
What should you do if you are unsure how to use a piece of equipment?
Ask the teacher or lab supervisor for instructions instead of guessing, to prevent accidents.
What should you do before eating or drinking after being in the lab?
Wash your hands thoroughly to remove any chemical residues that could be harmful if ingested.
What is the proper way to dispose of chemical waste?
Never pour chemicals down the sink unless instructed. Place waste in labeled disposal containers as directed by the teacher or lab supervisor.
What should you do if a chemical splashes into your eye?
Go to the eyewash station immediately and rinse your eyes for at least 15 minutes, keeping them open, and notify the teacher.
Why should electrical cords and equipment be kept away from water in the lab?
To prevent electric shock or equipment damage.
Why is it important to know the location of safety equipment (fire extinguisher, eyewash station, safety shower) before starting lab work?
In case of an emergency, quick access to safety equipment can prevent serious injuries or damage.
Why should you never touch your face, eyes, or mouth while working with lab materials?
Doing so could transfer hazardous chemicals or microorganisms into your body and cause harm.
Why is it important to always wear safety goggles when handling chemicals?
Safety goggles protect your eyes from chemical splashes, fumes, and unexpected reactions that could cause burns or blindness.
How do you treat a small burn in the lab?
Place the burned area under cool running water for at least 10 minutes and report it to the teacher—never apply ointments or ice.
How should sharp instruments like scalpels or dissecting needles be handled?
Always cut away from your body, use them carefully, and store them properly when not in use.
What is the first thing you should do before beginning any experiment?
Read and understand all instructions and safety precautions for the experiment.
What personal protective equipment (PPE) should be worn during most lab experiments?
Safety goggles, gloves when appropriate, and a lab apron or coat to protect skin and clothing.
How should acids and bases be properly diluted?
Always add acid (or base) to water, never water to acid, to prevent splashing and dangerous exothermic reactions.
What is the correct response if someone is cut and bleeding in the lab?
Apply pressure with a clean cloth or gauze to stop the bleeding, keep the injured person calm, and get help from the teacher right away.
What should you do before using unfamiliar lab equipment?
Read the instructions carefully or ask the teacher for guidance to ensure safe and correct use.
Why should you never eat or drink in the laboratory?
Eating or drinking in the lab can lead to accidental ingestion of harmful chemicals or contamination of experiments.