lab safety test Flashcards
examples of combustible materials:
alcohol, carbon disulfide, acetone
beakers can be used to …. materials and to ….
mix; estimate volume
mortar and pestle (porcelain) may be used to … and … to a powder
grind crystals; lumpy chemicals
crucible and cover (porcelain): used to … small amounts of …. at …
heat; solid substances; high temperatures
crucible can be used to get rid of …. in a …
water; solid substance
watch glass (glass) used to cover an … or ….; if a substance is escaping from either of these, the watch glass will help to … it and make data more …
evaporating dish; beaker; retain; accurate
evaporating dish (porcelain) used to contain small volumes of …..; used to separate a solid from … in a ….
liquid being evaporated; water; homogenous solution
pneumatic trough: used in experiment in which a gas is …. by water ….
collected; displacement
Florence flask (glass): may be …, used in … and for …. solutions;
heated; making; storing
the shape of the Florence flask allows for efficient …., …., as well as ….
heating; boiling; stirring
wide mouth collection bottle (glass): used with …;
pneumatic trough
plastic wash bottle (plastic): squeeze sides to dispense …; used to wash ….
water; lab glassware
dropper pipet (glass tip with rubber bulb) used to transfer small….; enables one to make a …. accurate in a graduated cylinder (for example)
volumes of liquid; measurement
funnel (glass/plastic): can be used to …. a mixture by means of …; can also be used to …. to small mouthed containers
separate; filtration; transfer chemicals
ring stand: metal rod fixed upright in a heavy metal base; has many uses as a …; used to …. lab equipment
support; hold/clamp
stirring with thermometer → If glass
no
Erlenmeyer flask (glass): may be …, used in …. in which the … of an unknown solution is discovered through using another solution
heated; titrations; concentration
safety goggles: must be worn at ….; used to prevent dangerous chemicals such as …. or …. from splashing into eyes
all times; acids; bases
rubber stoppers: used to plug … and …. to prevent …/… from ….
flasks; test tubes; liquids/gases; escaping their containers
glass rod with nichrome wires: used in …
flame tests
test tube holder: (spring metal), used to hold … or …., particularly when these containers are at ….
test tubes; glass tubing; extreme temperatures
clay triangle: wire frame with porcelain supports, used to support a …; can also be used to support a …. when filtration lasts for a lengthy time
crucible; funnel
scoopula: (metal/porcelain) used to transfer ….
solid chemicals
crucible tongs: (iron/nickel) used to … and … small items, particularly a … after it has been ….; however, these tongs are quite ….
pick up; hold; crucible; heater; inefficient
rubber tubing: used to connect … so as to transfer … or …
apparatus; liquids; gases
metal spatula: can be used for … or … chemicals; can also hold ..
stirring; mixing; chemicals
test tube brush: (bristles with wire handle); used to … small diameter …
scrub; glassware
ceramic square: used under …. or …;
hot apparatus; glassware;
wire gauze: used to spread the … of a …; can also be used to transfer …. as well as to support a …. when heating
heat; burner flame; crucibles; container
burner: used to heat … during … and can also be used for …
substances; experiments; flame tests
triangular file: used to scratch … prior to breaking to …
glass tubing; desired length
tripod: used to … containers of chemicals above the ….
support; flame of a burner
graduated cylinder: used to measure ….; must not be ….; more accurate source of measurement than a …
approximate volumes; heated; beaker
gas collecting tube: used to measure …
gas volumes
clamps: fastened to support ….
apparatus
types of clamps:
buret test tube clamp; clamp holder; double buret clamp; ring clamp; 3 pronged jaw clamp; ring clamp
forceps: used to … or … small objects; also used to carry crucibles to avoid having… to interfere with data
pick up; hold; body oils/sweat
stirring rod and rubber policeman: used to …, assist in …, and for removing … from a container
stir; pouring liquids; precipitates
condenser: used in … procedures
distillation
buret: similar to a ….; used to measure … of solutions in ….; delivers specific … of liquids
graduated cylinder; volumes; titrations; volumes
graduated pipet: used to measure …; less accurate than a ….
solution volumes; volumetric pipet
thermometer: measures
temperature
pipet bulb: used in … with a solution
filling a pipet
platform balance: used to find the … of different … in lab
mass; equipment
heating symbol indicates that you should be carefult not to touch
hot objects with bare hands
fire symbol: indicates presence of … or alerts you that you are working with a …
open flame; flammable liquid
corrosive substance: indicates a … or … substance (typically acids)
caustic; corrosive
breakage symbol: indicates an activity in which likelihood of … is greater
breakage
dangerous vapors symbol: indicates presence/ product of
dangerous vapors
explosion symbol: indicates that there is potential for
explosion
poison symbol: indicates presence of a
poisonous substance
electrical shock symbol: indicates potential for
electrical shock
radiation: indicates a … substance
radioactive
disposal symbol: indicates that a chemical should be
disposed of in a special way
hygiene: reminds to clean and …. as well as to avoid
wash hands; touching face/eyes
