chem quiz #!
stopwatch
a device used to measure time
beaker
can be used to hold, store, or heat, liquid common sizes are 50 mL, 100 mL, 250 mL, and 400 mL
bunsen burner
connected to a gas supply with rubber tubing. used to heat chemicals in beakers or test tubes
buret clamp
consists of a metal clamp with screw fastener, swivel nut, and adjusting screws, used to support apparatus on a ring stand
clay triangle
consists of a three-sided wire frame with porcelain supports. used to support a crucible over a flame
test tube brush
consists of a wire handle with bristles. used to scrub small diameter glassware
weel plate
consists of many cavity-like depressions in which small amounts of reactants are mixed.
iron ring or ring clamps
fastens onto a ring stand to serve as a support for various other objects
erlenymeyer flask
glassware with a flat bottom and cylinder neck. can be heated or stoppered to store liquids
ceramic square
hardened fiber material placed under hot apparatus
test tube rack
holds test tube in a vertical position
pipet
long, thing, graduated instrument used to transfer a measured volume from one place to another
wash bottle
made of flexible plastic. sides are squeezed to dispense liquid
crucible cover
made of porcelain used to heat very small amounts of solid substances at very high temperatures
safety goggles
must be worn at all times when working with chemicals or open flames
wire guaze
placed on a ring stand and used to spread the heat from a burner flame
crucible tongs
scissor-like tool ending with concave pincers. used to grasp hot evaporating dish, crucible, or small beakers
petri dish
shallow dish in which bacterial cultures are grown
evaporating dish
small bowl with spout made of porcelain, used to evaporate the liquid from the sample
test tube holder
spring handle with clamp on one end. used to hold test tubes or glass tubing
forceps
tweezer like tool used to pick up or hold small objects
ring stand
upright metal rod fixed in a heavy metal base. used as support
graduated cylinder
used to accurately measure the volume of a liquid. cannot be heated. common sizes are 10 mL, 50 mL, and 100 mL
rubber tubing
used to connect apparatuses to transfer liquids or gases
watch glass
used to cover an evaporating dish or beaker
ruler or meter stick
used to determine lengths in measures such as meters, centimeters, and decimeters
balance
used to find the mass of an object or substance
martar and pestle
used to grind crystals and lumpy chemicals to a powder
thermometer
used to measure the temperature of a substance
stirring rod
used to mix combinations of substances and to assist in the pouring of liquids
funnel
used to transfer a liquid from one place to another. used with filter paper to filter a liquid
scopula or spatula
used to transfer very small amounts of solid chemicals
lab apron
worn in the lab to protect clothing
