Tour of the Lab and Lab Equipment

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Tour of the Lab and Lab Equipment
General Chemistry Galax High School Mrs. Parris
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Lab Equipment

• Your lab equipment should
• Be clean before using it.
• Be checked (if glassware) for cracks, broken
  edges, and stars discard if damaged.
• Be washed, dried, and carefully stored in the
  proper place when done using it.

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Cleaning Supplies

1. Each lab station has plenty of paper towels,
   soap, water and a sink. (also located at my
   desk)
2. Used for cleaning lab equipment, and to wash your
   hands when finished.
3. We have floor brooms, table brushes, and dustpans
   to clean up.

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Keep our lab area neat and clean!
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Broken Glass Box and Trash Can
Broken Glass box to dispose of any broken glass,
instead of the trash can.
Trash Can to dispose of paper waste only!
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Beaker
Beakers hold solids or liquids that will not
release gases when reacted, or are unlikely to
splatter if stirred or heated. Very poor to
measure volume with (/-5) accuracy Note the
size capacity (250 mL in this case)
There are six sizes of beakers for you to use in
your lab desk.
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Erlenmeyer Flask
Erlenmeyer flasks hold solids or liquids that may
release gases during a reaction or that are
likely to splatter if stirred or heated.
Note the size
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Florence Flask
Rarely used in first year chemistry, it is used
for the mixing of chemicals. Narrow neck prevents
splash exposure.
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Graduated Cylinder
A graduated cylinder is used to measure volumes
of liquids probably your best everyday
measuring tool there are three sizes in your
desk. Note the rubber bumpers, and also the
size.
Others that are smaller may not have bumpers,
but have reinforced glass.
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Test Tubes we commonly use 2 sizes
18 x 150 mm
Ignition Tube (25 x 200 mm)
13 x 100 mm
Test tubes are used to mix chemicals, and also to
heat chemicals.
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Test Tube Holder
A test tube holder is useful for holding a test
tube which is too hot to handle. Knowing where
to hold this piece of equipment is important.
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Test Tube Brushes
Test tube brushes are used to clean test tubes
and graduated cylinders.
Small test tube brush
Forcing a large brush into a small test tube will
often break the tube. Dont worry about drying
the inside of a test tube.
Large test tube brush
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Test Tube Racks
Test tube racks are for holding and organizing
test tubes on the laboratory counter, and are
found in the wall cabinets.
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Rubber Stoppers
Rubber stoppers (also cork) are used to close
containers to avoid spillage or contamination.
Containers should never be heated when there is a
stopper in place.
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Well Plates
Well plates are used when we want to perform many
small scale reactions at one time. It is like
having lots of test tubes available at one time.
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Watch Glass
A watch glass is used to hold a small amount of
solid, such as the product of a reaction. Can
also be used as a cover for an evaporating dish
or beaker.
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Stirring Rod
The stirring rod is used to a)
manually stir solutions b) assist
in pouring liquids and c) to
transfer a single drop of a solution. Rubber
policeman tip is used to remove precipitates.
Stir with this end.
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Dropper Pipet
A dropper pipet is used to transfer a small
volume of liquid, usually one drop at a time.
On top of each dropper is a rubber bulb never
put your mouth on the dropper to provide suction
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Litmus Paper
Red litmus paper is used to identify bases Red
turns blue, Blue stays blue
Blue litmus paper is used to identify acids Blue
turns red, Red stays red
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Forceps
Forceps are used to hold or pick up small objects.
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Funnel
A funnel is used to aid in the transfer of
liquids from one vessel to another, and will hold
filter paper while filtering.
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Graduated Pipet
A graduated pipet measures and delivers exact
volumes of liquids uses a rubber bulb for
suction.
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Wash Bottle
A wash bottle has a spout that delivers a water
stream to a specific area. Distilled water is
the only liquid that should be used in a wash
bottle
Distilled Water
During use, keep the bottle upright as shown,
since ours have a tube that goes to the bottom of
the bottle.
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Weighing Boat

• Weighing boats are used to weigh solids that will
  be transferred to another vessel.
• We will also use squares of paper for this
  purpose throw them away after using.
• Never put chemicals directly on the balance scale
  it leaves residue and can harm the balance

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Electronic Balance
Place item here to mass

• Electronic balances are very accurate, highly
  dependable, and rugged.
• The digital display makes the mass value very
  easy to determine.

Parris 103
On button
Tare button
Off button
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Spatula
Spatulas are used to dispense solid chemicals
from their containers.
Chemicals should never be transferred with your
bare hands.
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Beaker Tongs
Beaker tongs are used to move beakers containing
hot liquids. Note the rubber coating to improve
grip on the glass beaker - do not hold this in a
burner flame.
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Burner
Burners are used for the heating of nonvolatile
liquids and solids. Hot plates will be used to
gently heat any flammable chemicals.
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Evaporating Dish
The evaporating dish is used for heating stable
solid compounds and elements, as well as for
evaporating nonvolatile solutions.
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Crucible and cover
Crucibles are used for heating certain solids,
particularly metals, to very high temperatures.
The cover can be used to contain any smoke
particles.
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Clay Triangle
The clay triangle is used as a support for
crucibles when being heated over a lab
burner. It can also be used to support a funnel
when filtering.
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Crucible Tongs
For handling hot crucibles also used to pick up
other hot objects - NOT to be used for picking up
beakers!
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Ringstands and their Components
Ringstands are a safe and convenient way to
perform reactions that require heating using a
lab burner. Can also be used as an insulating
pad to place hot objects while they cool.
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Ringstands and their ComponentsRing Clamp
Ring clamps connect to a ringstand, and provide a
stable, elevated platform for a beaker to be
heated. Will also hold a clay triangle and
funnel during filtering.
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Ringstands and their ComponentsTest tube Clamps
Test tube clamps are used to secure test tubes,
distillation columns, and burets to the ringstand.
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Ringstands and their ComponentsDouble Buret
Clamps
Double Buret clamps are used to secure burets
(long graduated tubes used in titrations) to the
ringstand.
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Ringstands and their ComponentsWire Gauze
Wire gauze sits on the iron ring to provide a
place to stand a beaker.
On older wire gauze, the white material was
asbestos currently it is a ceramic.
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Lighter
These strikers are used to light lab burners.
The flints on strikers are expensive. Do not
operate the striker repeatedly just to see the
sparks!
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Flask Tongs

• Used to hold a flask by the neck after being
  heated.

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Where in the Lab?
Ruler, watch glass, pipette
Burner and Ring Stand
Beakers, Flasks, Graduated Cylinders
Hand Tools
Apron/Goggles
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Goggles and Apron Drawer
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Burner and Ring Stand
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Always Wear Goggles and Apron
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Eyewash Station
Push this handle to turn on the water it will
stay on until you pull it to turn off.
The Eyewash is located in the back of the lab in
my chemical closed and under the Safety Shower.
You will need to summons me for assistance at the
Eyewash Station.
Flush your eyes for 15-20 minutes!
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Safety Shower
Lots of water will come pouring out here to rinse
chemicals spilled on you.
This is the handle to pull to activate the safety
shower.
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Eyewash Bottle and Fire Extinguisher

• Fire Extinguishers are found behind the door, at
  the door to my chemical room and at the back left
  corner of the lab stations.

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Fume Hood and Flammable Cabinet
Hood is used to mix chemicals that produce a gas
Fire Blanket found in cabinet under hood
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Fire Blanket
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Whats in the Chemical Closet?
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End of Lab Equipment