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Lab Equipment and Safety Procedures
Yes, you should take notes!
Beaker
A cylinder container used to hold liquids Several sizes Transfer liquids using smaller beakers,
Erlenmeyer flasks, test tubes, graduated cylinders
Volume measurements are not precise
Ring Stand The base supporting the iron ring
Iron Ring Attached to ring stand Supports beakers on the ring stand so that
they may be heated
Clamp Clamps rubber tubing to stop the flow of
liquid An extension off of the
ring stand used to hold
a single test tube
Wire Gauze Allows for more even and gradual heating
of glassware Place on iron ring
Test Tube holds small amounts of liquids Come in different lengths and widths to
serve various needs. They are typically used by chemists to hold different materials, usually liquids, during chemical experiments
Test Tube Holder Made of wire and used to hold tube when
you can't hold it directly
Test Tube Rack Device to hold test tubes in place while you
can't hold them Divots for holding test tubes in upright
position Pegs for drying of test tubes in upside down
position
Tongs Used to move hot objects; crucibles
Beaker Tongs Large, curved tongs Special tongs used for handling hot
glassware
Ceramic Triangle Place on iron ring to hold funnel Used for heating or cooling evaporating
dish Used to hold a crucible while the crucible is
heated
Bunsen Burner Before lighting, check to be sure barrel is turned
so no oxygen is getting to flame Rubber tubing attaches to gas valve Adjust flame height after lit Gas valve perpendicular=OFF Gas valve parallel=ON Tie back hair and loose clothing TURN OFF WHEN NOT BEING USED Used for heating, sterilization, and combustion
Hot Plate Plug into electrical outlet TURN OFF AND UNPLUG WHEN NOT IN
USE Increase hotplate temperature slowly so
glass does not burst Used to heat liquids in glass beakers,
Erlenmeyer flasks, and metal pans
Stirring Rod Glass – used for stirring in beakers and
flasks Used to aide in dissolving a solute in a
solvent, mixing Be sure to wash before using to mix
different mixtures – you could cause contamination
Wash Bottle Filled with water Plastic, with plastic straw Squeeze gently to rinse glassware
Evaporating Dish Used to heat or cool A small vessel with a wide opening used
particularly for rapid evaporating, weighing small quantities of powder, burning chemicals in air, and weighing filter paper after filtration
Dropper Can be glass with rubber bulb on end or plastic
(disposable) Squeeze air out of bulb Place end in liquid and release rubber bulb to fill
dropper with liquid To dispense, squeeze bulb gently RINSE THOROUGHLY BETWEEN THE
TRANSFER OF DIFFERING CHEMICALS TO ELIMINATE CONTAMINATION
Funnel Glass or plastic tube with a conical opening that is
used to pour liquid through a smaller opening Used for filtration Filter paper- fold in half, fold in half again, open
b/w 1 and 3, place in filter Slightly dampen filter with solvent to hold in place tube with a conical opening that is used to pour
liquid through a smaller opening
Scoopula (Yes, this is a real scientific term!)
Metal or glass A utensil used primarily in chemistry labs to
transfer solids: to a weigh paper for weighing, to a cover slip to measure melting point, or to a watch glass from a flask or beaker through scraping.
Erlenmeyer Flask Is a widely used type of laboratory
flask which has a conical base with a cylindrical neck
Used in filtrations and distillations
Rubber Stopper Holds thermometer in place while
measuring temperature Used to seal glassware to prevent
contaminants from entering
Graduated Cylinder Water is polar, glass is polar. The water “sticks”
to the glass and causes the liquid being measured to look like a ‘u’ (meniscus)
Read from bottom of MENISCUS A tall glass cylinder with a range of calibrated
markings that is used for visually MEASURING THE VOLUMES OF LIQUIDS
Do not allow reactions to occur in the graduated cylinder
Well Plate Plastic, several wells Used for microchemistry Use droppers to transfer liquids
Timer Keep track of how long it takes a reaction to
take place Measure in seconds
Thermometer Measures temperature, glass tube with
alcohol or mercury CBL, electrical temperature gauge. Place
gauge in liquid and get a digital readout. CBL will not break as easily
Hot Glove Move hot items
Safety Goggles Must be on at ALL times during a lab
Triple Beam Balance Measures mass – amount of matter in an object Matter – takes up space Be sure all weights are pushed completely to the left Start with highest weight and work your way down You want the beam to balance in the middle of the arm Weighing paper – zero with paper on plate, measure
from there (begin with too little, easier to add more)
Watch Glass A circular, slightly concave piece of glass
used in chemistry as a surface to evaporate a liquid, or as a cover for a beaker
Cleaning Brushes Used to clean glassware Do NOT poke the wire brush into bottom of
glassware – it will break
A Few extra reminders… Kill jar – labeled container for disposing of
chemicals that cannot be rinsed down the sink If you have extra reagent, do NOT return to
container. This will cause CONTAMINATION of the entire container. Dispose of it properly.
If glassware is broken at your lab station, please CALL YOUR TEACHER. DO NOT ATTEMPT TO CLEAN IT UP YOURSELF!
Lab Safety Always wear safety goggles Long hair and baggy clothing must be tied
back Always point a test tube opening away from
yourself and others Never taste or sniff anything Never leave a burner unattended Report accidents immediately
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