Chemistry I H Lab Materials

graduated cylinder
measures liquid volume accurately (usually between 5 and 100 mL) (could be made of plastic)
accurately measures the volume of a solution that is transferred during a titration reaction
measures small liquid volumes accurately (use a pipetter, not ones mouth), useful in making dilutions
volumetric flask
used to make solutions of known concentration, accurate liq. vol. measurement
gas collecting tube
tube that accurately measures gas volumes generated in a reaction through liquid displacement
holds liquid, use for water bath. Never used to measure volume even though sizes read 50 mL, 100 mL, 150 mL, 250 mL, 400 mL, 600 mL, 1000 mL
Erlenmeyer flask
holds liquid, shape ideal for swirling without spillage, used for titrations. Never used to measure volume regardless of volume reading on flask
Florence flask
holds liquid, narrow neck enables swirling and clamping with utility clamp. Never used to measure volume
sidearm flask
triangular flask with a side jet to assist in vacuum filtration (always used with a Buchner funnel)
separatory funnel
separates liquids based on density
dropping bottle
holds solutions
medicine dropper
transports unmeasured, small amounts of liquids
test tube
hold chemicals
watch glass
used to heat small amounts of solution when separating the solid from the liquid in a solution
evaporating dish
used to heat large amounts of solution when separating the solid from the liquid in a solution
mortar and pestle
used to grind up crystalline and granular solids into fine powder
crucible and lid
used to hold solids when heated to high temperatures
stores solids in a moisture-free environment
spot plate
small plate with several depressions or wells used to hold small samples of solutions or reactions
plastic wash bottle
holds distilled water which is used to make solutions or to rinse glassware or to rinse a precipitate from a beaker
Buchner funnel
porous, flat bottomed funnel used for vacuum filtration
used to channel material into a narrow opening or used to separate insoluble matter from a liquid
stirring rod
stir (may have a rubber policeman attached to help stir material in the edges of a beaker)
ring stand
support, foundation for utility clamps, iron rings, buret clamps & thermometer clamps
iron ring
support vessels (clay triangle & wire gauze) while heating, also small iron rings support funnels
wire gauze
spreads heat evenly as it rests on an iron ring, ideal for supporting beakers that are being heated.
measures temperature, typically in degrees Celsius (+/- 0.2 oC uncertainty)
thermometer clamp
holds thermometer upright heating/cooling (should keep thermometer off heated container)
utility clamp
holds vessels (test tubes, Erl. flasks & Flor. flasks) securely while heating, attaches vessel to ring stand
test tube holder
grasps hot test tubes, transports hot test tubes, allows user to manually heat a test tube.
clay triangle
supports the crucible while resting on iron ring during the heating process
crucible tongs
transport hot crucible on & off the clay triangle, in & out of the dessicator & to lift crucible lid
beaker tongs
transports hot beakers & glassware, Never use to transport hot ceramics as rubber will melt
test tube brush
clean test tubes (various diameters for various sized glassware)
beaker brush
Larger bristle surface for cleaning beakers
buret brush
long handle, narrow bristles and handle allow for cleaning a buret or gas collecting tube
buret clamp
supports burets and gas collecting tubes when attached to a ring stand
scoopula (spatula)
transport small amounts of solid
triangular file
etches glass so that the glass can be cut
rubber stopper
closes a vessel such as a test tube, Erlenmeyer flask or Florence flask
magnetic stirring plate
internal magnet spins a magnet in an Erlenmeyer flask during a titration