chem lab Flashcards
(34 cards)
refers to any potential source of damage or harm
Hazard
refers to the probability that a hazard can cause harm
Risk
Uses pictograms as warning signs
GHS
GHS
Globally Harmonized System
High risk -Low number
Ghs
Shown as a “diamond
NFPA
NFPA
National Fire Protection Association
High risk- High number
NFPA
a highly reactive substance that causes obvious damage to tissues by chemical chemical action
Corrosive
a substance that easily catches fire and has a flash point of 23-60 C; a liquid burns at normal temperatures
Flammable
Flammable flash point
23-60 C
the lowest temperature at which a substance (petroleum) will form vapor in the air that will “flash” on exposure on an open time
Flash point
liquid needs heat before it ignites; ex.: paper wood
combustible
substance capable of causing cancer; ex.: cigarette
carcinogen
rule of acid
acid to water
a glass container with a pouring lip and used to hold, mix, or heat substances
beaker
used to measure a precise volume of liquid
graduated cylinder
to hold/mix liquids; “titration flask”
Erienmeyer Flask-
to hold a precise volume of liquid; for a precise standard solutions preparation
volumetric flask
used to hold or clamp laboratory glassware and other equipment in place so it does not fall down or come apart
ring stand
for delivering known volumes of liquid, especially in titrations; pour liquid by “drop by drop” rule
burette
measures out precise small quantities at 10 mL; dispense with rubber aspirators
pipette
a thin glass or plastic tube used to eject or suck in a small amount of fluid
dropper
to hold/heat small amounts; has no graduation marks
test tube
