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.
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Lab equipment
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Objectives• Describe• Draw• List the uses of each item of lab equipment
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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
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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
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Spatula
Used for transferring solids
Metal or porcelain
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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.
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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
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Volumetric FlaskCalibrated in liter: marked with 1 volume.
Used for preparing solutions
Used for measuring ONLY one volume
Has a stopper
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Round Bottom FlaskSeveral sizes
Used for heating
Used for simple distillation
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Flat Bottom FlaskSeveral sizes
Used for heating
Used for simple distillation
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Separatory FunnelSeveral sizes
Has a stopper, a stop cock, and a stem
Used for separating liquid mixtures
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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
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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
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ProPipette or Pipette Pumps
To push the liquid through the pipette
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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
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Test TubeSeveral sizes
To do chemical test on small sample
Can be heated
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Test Tube HolderMetal clamp
To hold test tubes
Hold it near the opening
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Test Tube RackMay be wood, metal, or plastic
Hold test tubes in an upright position
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Ring StandMetal rod with a heavy base
Has many uses: support and or hold
Has a lot of accessories
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Iron Ring
Attach to the ring
stand as a support for
apparatus
Hold funnel, wire
gauze, beakers…
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ClampHold apparatus
Can be attached to the ring stand
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Wire GauzeWire screen with a ceramic fibered center (doesn’t burn)
To spread the heat of a flame
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Mortal and Pestle
grinds chemicals to powder
Pestle
Porcelain dish with a grinder
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Bottle
washes apparatus with distilled water
Squeezable plastic bottle with angular tip
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Stirring RodStir combination of liquids
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Dropper
transfers small amount of liquid
Glass and plastic droppers
Plastic used only once
Every liquid has its own dropper
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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
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Evaporating DishPorcelain dish
Acts as a container for small amounts of liquids being evaporated
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Metallic Tongs
picks up and holds hot apparatus
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Eye Goggles
Used as eye glasses to protect the eyes