Lab Equipment Flashcard

Unlock all answers in this set

Unlock answers
question
safety goggles
answer
must be worn at all times in the lab. They provide protection against glass or chmical both from the front and the sides

question
lab apron
answer

provides partial protection against chemical spills, are only resistant to chemical action, undertoe procedure for removing

question
lab burner
answer

operate with station valve fully open and gas intake closed as much as possible. Burner vavle should be open until a fluttering sound is present and no glow from the grid at the top.

The Amount of heat applied to an object or container is Not Controlled With The Valve. The Intensity of heating is controlled by the distance of the object and the rapid movement of the object or burner.

question
ring/ring stand
answer

principle support apparatis for heating a variety of objects. Greatest hazards are poor assembly and not giving adequet time to cool

question
crucible
answer

highest temperature container, can be exposed directly to the flame, Cover is used to keep oxygen out, not keep chemicals in

question
pipestem triangle
answer

used to support the crucible and can also be used as a support for the funnel

question
crucible tongs
answer

uses to move crucible and crucible cover when very hot. two-handed technicle for removole

question
large test tube
answer

used for heating. Since solids require prolonged heating they normally are supported with utility clamp Near The Rim.

question
small test tube
answer

used for mixing chemicals and observation. Very dangerous to heat except in hot water bath

question
wire gauze
answer

must be used with beaker, flourince, erlenmeye, and dished when heating

question
beaker/beaker tonges
answer

all purpose poring, holding, and holding container for liquids. The graduations Do Not give Accurate Volume measurments.

question
evaporating dish
answer

used to evaporate water from solutions and recover solids that are not ususally sensitive to heat. Weigh before experiment.

question
flourence flask
answer

normally used as aboiling flask and used when it is desiralbe to control or direct the vapors in the boiling process. Usually used for distillation or with liquids with hazardous vapors.

question
erlenmeyer flask
answer

usually used to mix substances or to form solutions. used in the titration process for mixing. Used as a substutue for flor. flask and graduations Are Approximate.

question
graduated cylinders
answer

used to measure volume of liquids, must be taken at eye level from the bottom of the meniscus, plastic ring is kept near the top. Do Not mix in this or use the small cylinder to Dispence an accurate volume.

question
glass rod
answer

Not For Stiring. use to transfer a drop for "testing" and as an aid for pouring from a reagent bottle to a beaker.

question
hydrogen paper
answer

test chemicals and their pH balance

question
filtering funnel
answer

used for filtering. Mass filter paper before the experiment.

question
spatula/scoop
answer

used for transfering solids. can be a large source of contamination. Never used to obtain stock chemicals.

question
rubber placement
answer

used to help transfer solids form flask to beakers (usually for filtration)

question
dropping pipette
answer

used to dispense one or more drops of chemical. A major source of contamination error in procedure.

question
lab thermometer
answer

measures temperatures. Degree Celcius.

question
stoppers/glass tubing
answer

solid stoppers seal test tubes or flask. One-hole stoppers are connected to glass and rubber tubing usually to direct gases to a different place.

question
reagent bottles
answer

used to store and transport chemicals from bulk supplies.

question
mortal and pestal
answer

used to grind not pound chemicals into a fine powder for rapid reaction or dissolving. Do Not heat or steal.

question
electronic blances
answer

gives Accurate mass measurements

Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New