chem lab saftey quiz materials

beaker

glass- like a container/cup- may be heated- mL marked on beaker

graduated cylinder

used to measure volume- marked with mL scale

erlenmeyer flask

glass- common sizes marked on flask- may be heated

florence flask

glass- common sizes marked on flask- may be heated

test tube

glass, several sizes, many uses- can be heated

test tube holder

clamp with a spring handle- metal- to hold a test tube

tongs

to pick up and hold apparatus- metal

double buret clamp

metal clamp with flexible clips- to hold burrets when tirating

10 cm ruler

plastic- divided into cm and mm divisions- measure length

pipestem triangle

to support the crucible- triangular wire frams with clay material coverings

crucible and cover

small porcelain dish with cover- to heat small amounts of solid material at high temperature

ceramic fibered square

hardened ceramic fibered material- to place under hot appuratus

wire gauze

wire screen with ceramic fibered center- to spread the heat of a flame

laboratory burner

metal heating device connected to gas outlet with rubber tubing- to heat chemicals in beakers or test tubes

ring stand

metal rod upright heavy base- a support with many uses

buret

glass marked with millimeter scale and fitted with a stopcock, pinch clamp, or glass bead0 used to withdraw and measure volumes of solutions in tirations

volumetric flask

marked off to liter capacity with a glass stoper- used in the preparation of solutions

24 well microtiration plate

plastic- used to hold tubes of liquids

iron ring

iron ring with screw fastener several sizes- to fasten to the ring stand as a support for apparatus

buret clamp- test tube clamp

metal clamp with: screw fastener, swivel and lock nut, adjusting screw, curved clamp- used to hold apparatus may be fastened to the ring stand

mortar and pestle

heavy porcelain dish with grinder- to grind chemicals to a powder

spatula

may be of metal or porcelain- to transfer solid chemicals in weighing

triangular file

metal file with three cutting edges- to scratch glass to file

rubber connector

short length of rubber tubing- to connect parts of apparatus

pinch clamp

metal clamp with finger grips- to clamp a rubber connector

test tube rack

rack- may be wood, metal, or plastic- to hold test tubes in an upright position

plastic wash bottle

squeezable plastic bottle with angular tip- to dispense distilled water

pneumatic trough

galvanized iron container with rolled edge, overflow tube, and bottle shelf- to hold water, gas collecting bottles, and delivery tube from gas generator

test tube brush

brush with wire handle- to scrub glass apparatus

stirring rod

glass rod- to stir combinations of materials to use in pouring liquids

evaporating dish

porcelain dish- as a container for small amounts of liquid being evaporated

glass plate

thick glass- many uses (should not be heated)

watch glass

curved glass- may be used as a beaker cover, may be used in evaporating small amounts of liquid

funnel

glass or plastic- may be used to hold a filter paper or for pouring

medicine dropper

glass tip with rubber bulb- to transfer small amounts of liquid

forceps

metal- to pick up hot small objects

funnel support

wooden frame with slots for funnel- has metal clamp- used to support funnels

wide mouth bottle

glass- many uses as a container

thin stem pipette

plastic- used to transfer small amounts of liquid