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Rule: No horseplay or practical jokes. Why is it important, and what are the consequences of not following it?
The lab is full of hazards like open flames, sharp glass, and toxic chemicals, so messing around can make someone knock over equipment, spill chemicals, or get burned or cut. Consequences: serious injuries to you or others, plus detention, loss of lab privileges, or suspension.
Rule: Perform lab work only when a teacher is present. Why is it important, and what are the consequences of not following it?
A teacher supervises for safety and can step in if something goes wrong. Working unsupervised means no one to catch mistakes or help in an emergency. Consequences: accidents happen with no help available, plus loss of lab privileges or suspension.
Rule: Never assume an experiment is hazard-free just because it is printed. Why is it important, and what are the consequences of not following it?
Printed instructions can still involve dangerous reactions, heat, or chemicals, so assuming it is safe makes you careless. Consequences: burns, spills, or injury from an unexpected reaction.
Rule: Maintain a clean and well-kept lab area. Why is it important, and what are the consequences of not following it?
Clutter and mess can hide spills, cause contamination, and lead to accidents. Consequences: knocking things over, contaminated results, and cuts or spills.
Rule: Keep pathways clear (books, bags out of the way). Why is it important, and what are the consequences of not following it?
Items left on the floor are tripping hazards, especially when someone is carrying chemicals or hot glassware. Consequences: tripping and falling into equipment or spilling chemicals on yourself or others.
Rule: Avoid unnecessary movement and talk in the lab. Why is it important, and what are the consequences of not following it?
Distraction and crowding around lab stations lead to bumps, spills, and mistakes. Consequences: accidents caused by being distracted or jostled.
Rule: Walk, never run, especially when transporting chemicals. Why is it important, and what are the consequences of not following it?
Running can make you slip, collide with someone, or drop chemicals and glassware. Consequences: spills, broken glass, chemical splashes, and injury.
Rule: Notify the teacher immediately if an accident occurs. Why is it important, and what are the consequences of not following it?
A quick response can stop a small accident from becoming serious by containing a spill, treating a burn, or getting help fast. Consequences: a minor issue turns dangerous if it is hidden or reported late.
Rule: Clear your lab table of unnecessary materials before working. Why is it important, and what are the consequences of not following it?
Books, backpacks, and clothing can catch fire, get chemicals spilled on them, or knock into equipment. Consequences: fire, ruined belongings, spills, and accidents.
Rule: Use heat safety items such as tongs and gloves. Why is it important, and what are the consequences of not following it?
Hot glassware and equipment cause severe burns, and tongs and gloves protect your hands. Consequences: painful burns.
Rule: Thoroughly clean all work surfaces and equipment after each use. Why is it important, and what are the consequences of not following it?
Leftover chemicals can react, contaminate the next experiment, or harm the next person. Consequences: contamination, unexpected reactions, and chemical exposure.
Rule: Use fume hoods for flammable or toxic fumes. Why is it important, and what are the consequences of not following it?
Fume hoods vent dangerous fumes away so you do not inhale them or accidentally ignite them. Consequences: inhaling toxic gas or causing a fire or explosion.
Rule: Check chemical labels twice. Why is it important, and what are the consequences of not following it?
Chemical names and formulas can differ by just one letter or number, and grabbing the wrong one can cause a dangerous reaction. Consequences: violent reactions, wrong results, and injury.
Rule: Do not return excess material to its original container. Why is it important, and what are the consequences of not following it?
Returning used material can contaminate the entire container of chemical. Consequences: a ruined or contaminated chemical supply and unsafe future reactions.
Rule: Do not use broken or chipped glassware; notify the teacher. Why is it important, and what are the consequences of not following it?
Cracked glass can cut you or shatter when heated. Consequences: cuts and broken-glass injuries.
Rule: Use wire gauze to protect glassware from direct flame when heating. Why is it important, and what are the consequences of not following it?
Direct flame can crack glassware, causing it to shatter or spill its hot contents. Consequences: shattered glass, burns, and spills.
Rule: Carefully follow instructions when discarding used chemicals. Why is it important, and what are the consequences of not following it?
Some chemicals react dangerously if mixed or poured down the drain. Consequences: toxic fumes, dangerous reactions, and environmental harm.
Rule: Return equipment, chemicals, and goggles to their designated locations. Why is it important, and what are the consequences of not following it?
It keeps the lab organized and makes sure safety gear is available and chemicals are stored safely. Consequences: lost or misused equipment and dangerous chemical mix-ups.
Rule: Shut off gas lines and water faucets before leaving the lab. Why is it important, and what are the consequences of not following it?
Gas left on can leak and cause a fire, and running water can flood the room. Consequences: gas leaks, fire, or flooding.
Rule: Leave your work station clean and in good order before leaving. Why is it important, and what are the consequences of not following it?
A messy station leaves hazards like spills or chemicals for the next class to run into. Consequences: the next person gets exposed to chemicals or hurt by leftover hazards.
Rule: Do not leave your assigned lab station without the teacher's permission. Why is it important, and what are the consequences of not following it?
Wandering off leaves your experiment unattended and puts you around setups you are not familiar with. Consequences: unattended reactions and accidents.
Rule: Know the location of fire extinguishers, eyewash fountains, and first-aid kits. Why is it important, and what are the consequences of not following it?
In an emergency you have to act fast, and knowing where safety equipment is saves critical seconds. Consequences: injuries get worse if you cannot find the safety equipment in time.
Rule: Never point the open end of a test tube at anyone. Why is it important, and what are the consequences of not following it?
Heated contents can shoot out of a test tube and burn or splash whoever it is aimed at. Consequences: chemical burns or splashes to the face and eyes.
Rule: Promptly remove broken glass and waste from the sink. Why is it important, and what are the consequences of not following it?
Glass hidden in a sink can cut the next person who reaches in. Consequences: deep cuts.
Rule: Keep a respectful, cautious attitude toward experiments. Why is it important, and what are the consequences of not following it?
Being careless or panicky both cause mistakes, while respecting the hazards keeps you focused and safe. Consequences: accidents caused by carelessness.
Rule: Read the assigned experiment beforehand and note any cautions. Why is it important, and what are the consequences of not following it?
Knowing the steps and warnings ahead of time prevents dangerous mistakes mid-experiment. Consequences: doing a step wrong and causing a reaction or injury.
Rule: Confine long hair and loose clothing; wear closed-toed shoes, no sandals. Why is it important, and what are the consequences of not following it?
Hair and loose clothing can catch fire or dip into chemicals, and open shoes leave your feet exposed to spills and broken glass. Consequences: fire, chemical burns, and foot injuries.
Rule: Wear proper eye protection during activities with eye hazards. Why is it important, and what are the consequences of not following it?
Your eyes are extremely vulnerable to chemical splashes and flying debris. Consequences: chemical burns to the eyes or permanent blindness.
Rule: Never eat or drink in the lab or from lab equipment. Why is it important, and what are the consequences of not following it?
Food and drink can be contaminated by chemicals, and lab equipment is not clean. Consequences: swallowing toxic chemicals and getting poisoned.
Rule: Waft (wave your hand) to smell odors or fumes. Why is it important, and what are the consequences of not following it?
Directly inhaling fumes can damage your lungs, while wafting brings only a small, safer amount to your nose. Consequences: inhaling harmful or toxic fumes.
Rule: If in doubt, ASK. Why is it important, and what are the consequences of not following it?
Guessing in a lab is dangerous, and asking first prevents mistakes. Consequences: dangerous errors that come from guessing instead of checking.