Chemical Safety — Video Notes (Laboratory Practices and Safety)

Vocabulary-style flashcards covering key concepts from the Chemical Safety lesson, including SDS, GHS, PPE, NaOH handling, lab equipment, pH meter use, and fume hood practices.

Safety Data Sheet (SDS)

A document that details chemical hazards, composition, safe handling, storage, PPE requirements, and emergency measures.

Globally Harmonized System (GHS) pictograms

Standard hazard symbols used to communicate chemical hazards on labels and Safety Data Sheets.

Personal Protective Equipment (PPE)

Protective gear worn to minimize exposure to hazards (e.g., lab coat, safety glasses, gloves).

Fume hood

A ventilated enclosure that contains gases, vapors, and fumes to protect the user from exposure.

Sodium hydroxide (NaOH)

A strong, caustic base that is corrosive; dissolution is exothermic and NaOH is hygroscopic.

Corrosive

A hazard indicating substances that can cause severe skin burns and material damage.

Exothermic dissolution

A chemical process during which heat is released as a solid dissolves in a solvent.

Hygroscopic

A property of substances that readily absorb moisture from the air.

RO water (Reverse Osmosis water)

Water produced by reverse osmosis; used in labs for solutions and rinsing.

pH meter

Instrument used to measure how acidic or basic (alkaline) a solution is.

Calibration (pH meter context)

Process of adjusting a measuring instrument to known standards to ensure accuracy.

Rinse (pH meter probe)

Rinse the pH probe with RO water before measurement to remove residues and prevent contamination.

Kimwipe (KimWipes)

Lint-free tissue used to blot or dry laboratory glassware and probes.

Taring

Zeroing a balance to exclude the weight of the container or weighing boat.

Volumetric flask

Glassware calibrated to contain a precise volume, used for preparing accurate solutions.

Serological pipette

A pipette designed to deliver precise volumes of liquid, typically used with a pipette bulb filler.

Pipette bulb filler

A device attached to a pipette to draw liquid into the pipette safely and easily.

Beaker

A common glass lab container for holding liquids; not used for precise measurements.

Weighing balance/analytical balance

Instrument for measuring mass; measurements are more precise when balance doors are closed and the tare is used.

NaOH solution preparation rule

In preparing NaOH solution, add NaOH pellets to water, not water to NaOH, to avoid vigorous reaction.

NaOH waste disposal

Dispose of NaOH waste by labeling the container and placing it in the fume hood’s designated NaOH bottle.

Lab attire and PPE requirements

Wear lab coat, covered shoes, safety glasses/goggles, and gloves at all times in the lab.

General lab safety rules

No eating or drinking; know exits; stay focused; ask the lecturer if unsure; PPE must be worn.

Fume hood safety steps

Check hood functioning, read airflow indicators, and set an appropriate sash height for ventilation.

Sash height

The vertical position of the fume hood sash; influences airflow and exposure protection.

Correct waste container (CORECT)

Designated waste containers for chemical waste located in the fume hood area.