Lab equipment. Objectives Describe Draw List the uses of each item of lab equipment.
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Transcript of Lab equipment. Objectives Describe Draw List the uses of each item of lab equipment.
Lab equipment
Objectives• Describe• Draw• List the uses of each item of lab equipment
BeakerThis is a 250ml beaker.
Beakers can be found in different sizes: 100ml, 250ml, 400ml marked on the beaker.
Used as a container
Can be heated
Graduated CylinderThis is a graduated (marked) cylinder.
Graduated cylinders can be found in different sizes: 10, 25, 35, 50, 100ml
Used for measuring volume Graduated in ml
Spatula
Used for transferring solids
Metal or porcelain
Erlenmeyer FlaskThis is an Erlenmeyer flask.
Erlenmeyer flasks can be found in
different sizes: 125, 250, 500ml.
Used as a container; can be heated
Used for preparing mixtures
Used for doing chemical reactions
Has an opening and a flat bottom so that chemicals do not splash or swirl.
FunnelThis is a funnel.
Small and big funnel
It has a stem.
Used for holding a filter paper to separate a mixture or solid and liquid
Used in pouring
Could be glass or plastic
Volumetric FlaskCalibrated in liter: marked with 1 volume.
Used for preparing solutions
Used for measuring ONLY one volume
Has a stopper
Round Bottom FlaskSeveral sizes
Used for heating
Used for simple distillation
Flat Bottom FlaskSeveral sizes
Used for heating
Used for simple distillation
Separatory FunnelSeveral sizes
Has a stopper, a stop cock, and a stem
Used for separating liquid mixtures
Graduated PipetSeveral sizes graduated in ml
To measure and deliver specific volumes of liquid
Very accurate in measuring volumes; more accurate than graduated cylinder
Use a pipet filler to push the liquid through the pipet
Volumetric Pipette
Several sizes marked to a certain volume
measures and deliver specific volumes of liquid
Calibrated in ml (measures ONLY one volume)
Use a pipet filler to push the liquid through the pipet
Very accurate in measuring volumes; more accurate than graduated cylinder
ProPipette or Pipette Pumps
To push the liquid through the pipette
Bunsen BurnerIs a metal heating device connected to a gas outlet with a rubber tubing
To heat chemicals
To light a Bunsen burner: 1) close the gas and air valve 2) hold a light match on top of the burner tube 3) turn on the gas valve 4) open the air valve slowly 4) adjust the light to produce a light blue flame
Test TubeSeveral sizes
To do chemical test on small sample
Can be heated
Test Tube HolderMetal clamp
To hold test tubes
Hold it near the opening
Test Tube RackMay be wood, metal, or plastic
Hold test tubes in an upright position
Ring StandMetal rod with a heavy base
Has many uses: support and or hold
Has a lot of accessories
Iron Ring
Attach to the ring
stand as a support for
apparatus
Hold funnel, wire
gauze, beakers…
ClampHold apparatus
Can be attached to the ring stand
Wire GauzeWire screen with a ceramic fibered center (doesn’t burn)
To spread the heat of a flame
Mortal and Pestle
grinds chemicals to powder
Pestle
Porcelain dish with a grinder
Bottle
washes apparatus with distilled water
Squeezable plastic bottle with angular tip
Stirring RodStir combination of liquids
Dropper
transfers small amount of liquid
Glass and plastic droppers
Plastic used only once
Every liquid has its own dropper
TripodTri: 3, pod: leg. Like a small table
holds beakers or flasks being heated on a bunsen burner
Can’t be used for a round bottom flask
Evaporating DishPorcelain dish
Acts as a container for small amounts of liquids being evaporated
Metallic Tongs
picks up and holds hot apparatus
Eye Goggles
Used as eye glasses to protect the eyes