Chemistry Equipment Studyguide

beakers

-used to transport solutions and solvents

-reactions are contained in beakers

-used to estimate a measurement not for accuracy

graduated cylinder

used to measure a liquid

-very tall

-read measurement from bottom of concave meniscus

test tubes

used for small reactions that are easily observable

-they cannot stand on their own and shouldn’t be held in direct flame

erlenmeyer flask

used for mixing regents and conducting reactions

-useful for swirling liquid without spilling

-imprecise measurements

buchner flask

similar to erlenmeyer flask but has a side arm for vacuum filtration

buchner funnel and rubber adapter

sit in flask and uses filter paper

-it is made of plastic

filter funnel

gravity filtrations

powder funnel

easier to use when adding powder to a beaker and is easily distinguishable because of opaque appearance

spatula

used for picking up solids; can be different shapes

stirring rods

used for stirring and can be confused with thermometer

pipette

using for adding small amounts of liquid and accurate measurements

buret

used for filtrations and is similar to a graduated cylinder but allows liquids to go out

-the bottom includes a stopper

-is inverted and can produce measurements

volumetric falsk

lines indicate volumes and is used for standard solutions

separatory funnel

used for separating 2 emissary liquids and has right caps

-needs to be held by a ring clamp and can release liquid

dropping funnel

similar to a separatory funnel but has an arm that holds pressure

mortar and pestle

is used to grind up materials

-mortar=bowl

pestle=grinding stick

round-bottom flask

used for serious reactions

-allows for better heat distribution

-a cork rind is needed for support since the bottom is completely circular

ground glass joint

strongest joint for clamping on stand

reflux condenser

used to boil a liquid wihtout losing the volume; side arms are filled with cool water to condense the gas

-never block the top or the pressure will blow out

clamps and stands

used to hold up glass but be wary of gravity and what side the device is being clamped on

rod holders

holes in the table that are used to hold glassco

lumn

used for column cromatography

-solvent reservoir

filter paper

used for filtering

-proper folding instructions: bend in half, bend in half again, open up back side

-can be used to dry solids

watch glass

can hold and weigh a solid

evaporating dish

used to dry a solid and to heat something too

melting point tube

incredibly thing and small tube used for very slight liquids or materials

NMR tube

used to obtain and NMR spectrum with cap

fume hood

hot plate and magnetic stirrer; used to heat something and stir it

-Teflon stir bar in flask

scale/ balance

weigh solid accurately

tare

set a scale to zero