Lab Equipment and Safety - Video Notes

Vocabulary-style flashcards covering fire safety, spill response, lab attire, weighing and measuring techniques, Bunsen burner operation, and general lab protocols from the lecture notes.

In Case of Fire

If you feel unsafe, evacuate; turn off any open bunsen burners on your way out.

Fire Extinguisher Use

Fire extinguishers are not your responsibility to use; evacuate and alert the instructor.

Stop, Drop, and Roll

Procedure for a person on fire; stop, drop, and roll to smother flames.

Fire Blanket

Used to cover a person on fire; you are authorized to obtain it.

Watch Glass

A small glass cover used to contain or smother a fire that is growing too large.

Shower/Eyewash Station

If a large amount of chemical spills on a person, move them to the shower/eyewash immediately.

Rinse with Water

For small chemical spills on skin, rinse with water in the sink and notify the instructor.

Spill Reporting

All spills, whether on a person or not, should be reported immediately.

Lab Attire

Wear long pants, closed-toed shoes, and goggles for every lab.

Hair Restraint

Long hair (shoulder length or longer) should be tied back when required.

Lab Aprons

Aprons may be required in some labs; wear as instructed.

Dress Code Consequences

Failure to wear proper clothing can result in disqualification from the lab and make-up time.

Weighing Tools

Common tools: weigh boat (primary), watch glass or evaporating dish as alternatives.

Tare (Zeroing)

Zero the balance before weighing to set tare mass.

Mass by Subtraction

Alternative method: record weigh boat mass and subtract from final measurement.

Weigh Boat Removal

Remove the weigh boat from the balance after adding the solid.

Target Mass Proximity

Aim to achieve a mass just below the target; do not return extra solid to the original bottle.

Progress Check

Place the weigh boat back on the balance to verify progress.

Scoopula Usage

Use a scoopula for the last fractions of a gram; keep the weigh boat on the balance only as needed.

Balance Hygiene

Wipe the balance surface clean after use for the next student.

Balance Sensitivity

Balances can be sensitive; avoid leaning near or moving the balance.

Graduated Cylinder

Instrument to measure liquid volume; choose a cylinder that holds the target volume.

Pouring Protocol

Pour directly into the cylinder to just below the target, never back into the original bottle.

Pipette Adjustment

Use a pipette to bring the liquid up to the exact target volume.

Meniscus Reading

Read volume at eye level from the bottom of the curved meniscus.

Two-Scale Labeling

Some cylinders have two sets of numbers; read the correct scale for your measurement.

Bunsen Burner Safety

Select a safe resting spot, inspect valves and the supply line, and secure connections.

Gas Line Connection

Attach the supply line to the burner and gas supply by pushing and twisting until secure.

Ignition Procedure

Turn on gas toward the supply line and strike with the striker to create sparks.

Lighting Troubleshooting

If the burner does not light after 4–5 strikes, turn off gas and retry later.

Flame Adjustment

Use the bottom knob to adjust gas flow; adjust air with the shaft for flame size and color.

Unattended Burner

Never leave a lit Bunsen burner unattended.

Test Tube Heating Safety

Point heated tubes away from people to avoid exposure to hot glass or contents.

Hot Glass Awareness

You cannot tell if glass is hot by sight; use tongs if it could be hot.

Chemical Waste Disposal

Dispose of chemical waste using approved methods; do not pour down the sink.

Injury Protocol

Notify the instructor immediately if you are injured.

Glassware Inspection

Check glassware for damage or residue before use.

Hand Hygiene

Wash your hands after finishing a lab.

Ask for Help

If unsure about anything, ask your instructor for clarification.