Lab Equipment. Balance Digital Digital Triple beam Triple beam Measures mass Measures mass Unit is a...
Transcript of Lab Equipment. Balance Digital Digital Triple beam Triple beam Measures mass Measures mass Unit is a...
Lab EquipmentLab Equipment
BalanceBalance
Digital Digital Triple beam Triple beam Measures massMeasures mass Unit is a gramUnit is a gram
BeakersBeakers
Hold substancesHold substances ContainersContainers Measure liquid volumeMeasure liquid volume General measurementGeneral measurement Different sizesDifferent sizes
Bunsen BurnerBunsen Burner Heating deviceHeating device Burns a stream of a flammable gasBurns a stream of a flammable gas Not invented by German chemist Not invented by German chemist
Robert BunsenRobert Bunsen Named after himNamed after him Actually an improvement made by Actually an improvement made by
his laboratory assistant on an his laboratory assistant on an earlier design by Michael Faraday earlier design by Michael Faraday
The improvement is called a Tirrill The improvement is called a Tirrill Burner Burner
BuretBuret Long, vertical piece of glasswareLong, vertical piece of glassware Calibrated on its full length Calibrated on its full length Stopcock on the bottomStopcock on the bottom Used to dispense known amounts of Used to dispense known amounts of
a liquida liquid Used when precision is necessaryUsed when precision is necessary Titration experimentsTitration experiments EXPENSIVE !!!EXPENSIVE !!!
CruciblesCrucibles
A cup-shaped piece of A cup-shaped piece of equipment equipment
Used to contain Used to contain substances when heating substances when heating them to very high temps them to very high temps
The crucible is usually The crucible is usually made of porcelainmade of porcelain
Usually has a lidUsually has a lid
Erlenmeyer FlaskErlenmeyer Flask Widely used glass Widely used glass
container container Has a narrow neckHas a narrow neck Wide baseWide base Can be stoppered or Can be stoppered or
swirled swirled Again general measurmentAgain general measurment Named after Richard Named after Richard
ErlenmeyerErlenmeyer German chemist, 1861German chemist, 1861
Evaporating DishEvaporating Dish
Shallow bowl with lipShallow bowl with lip PorcelainPorcelain Used to heat and Used to heat and
evaporate liquidsevaporate liquids
ForcepsForceps Hinged instrument used for grasping Hinged instrument used for grasping
and holding objectsand holding objects Not called “tweezers” in labNot called “tweezers” in lab Metal or plastic Metal or plastic
FunnelsFunnels Cone shaped openingCone shaped opening Narrow stemNarrow stem Glass or plasticGlass or plastic Used to separate spoils Used to separate spoils
from liquidsfrom liquids Filter paper cones trap Filter paper cones trap
solidssolids
Graduated CylinderGraduated Cylinder ExpensiveExpensive Measure liquid Measure liquid
volume volume Calibrated Calibrated
accuratelyaccurately Bumper guardsBumper guards
on many on many Different sizesDifferent sizes
Mortar and PestleMortar and Pestle
A tool used to grind and A tool used to grind and mix substancesmix substances
Pestle is a heavy stick Pestle is a heavy stick whose end is used for whose end is used for pounding and grindingpounding and grinding
Mortar is a heavy bowlMortar is a heavy bowl Often ceramicOften ceramic
PipetsPipets Dropper pipetsDropper pipets Plastic pipets Plastic pipets Measuring pipetsMeasuring pipets Used to transfer Used to transfer
small volumes of small volumes of liquidsliquids
Pipet PumpsPipet Pumps Attaches to pipetAttaches to pipet Uses wheel to draw Uses wheel to draw
up liquid up liquid Accurately and Accurately and
effectively moves effectively moves liquid into pipetliquid into pipet
Controls the Controls the dispensing of dispensing of liquidsliquids
Ring StandRing Stand
A metal support stand A metal support stand Consists of a long upright Consists of a long upright
rod attached to a heavy rod attached to a heavy rectangular base rectangular base
Used with rings and Used with rings and clamps clamps
Use in supporting Use in supporting laboratory glassware laboratory glassware
Ring Clamps or Iron Rings Ring Clamps or Iron Rings
Connect to ring Connect to ring standstand
Can be used with Can be used with wire gauze wire gauze
Support a variety of Support a variety of lab glasswarelab glassware FunnelsFunnels Beakers Beakers CruciblesCrucibles
Safety GogglesSafety Goggles
Used to protect the eyesUsed to protect the eyes Worn during all labsWorn during all labs
ScoopulaScoopula
Metal scoopMetal scoop Used to transfer small Used to transfer small
amounts of solidsamounts of solids
Stir RodsStir Rods
Long, narrow rodLong, narrow rod Generally glassGenerally glass Used to stir or mix Used to stir or mix
solutionssolutions
StoppersStoppers Plug openings in Plug openings in
glassware glassware Used to contain Used to contain
liquids in flasks and liquids in flasks and test tubestest tubes
Corks and rubber Corks and rubber stoppersstoppers
Different sizes Different sizes Some have holesSome have holes
Glass tubing Glass tubing ThermometersThermometers
Test TubesTest Tubes Finger length glass tubeFinger length glass tube Sealed on one endSealed on one end Lip on other end for Lip on other end for
easy pouringeasy pouring Holds small samples, Holds small samples,
usually liquidsusually liquids Easily heated to boilingEasily heated to boiling Samples easily Samples easily
observedobserved
Test Tube BrushTest Tube Brush
Narrow brushNarrow brush Used to clean test tubesUsed to clean test tubes Different sizesDifferent sizes Never forced into tubeNever forced into tube
Test Tube HolderTest Tube Holder
AKA test tube AKA test tube clampclamp
Made out of wire Made out of wire Holds test tubesHolds test tubes You hold it in your You hold it in your
hand and squeeze hand and squeeze on the handles to on the handles to open the other open the other endend
Test Tube RackTest Tube Rack Can be made of Can be made of
different materialsdifferent materials Can have different Can have different
shapesshapes Holds test tubes Holds test tubes
when:when: A reaction is A reaction is
occurringoccurring Observations are Observations are
mademade When they are not When they are not
neededneeded
ThermometerThermometer
Device that measures Device that measures temperature temperature
The word thermometer is The word thermometer is derived from two smaller derived from two smaller word fragments:word fragments: thermothermo from the Greek for heat from the Greek for heat metermeter from Greek, meaning to from Greek, meaning to
measuremeasure Two important parts:Two important parts:
Bulb containing a liquidBulb containing a liquid Scale to measure changeScale to measure change
ThermometerThermometer Not mercuryNot mercury Generally alcohol based liquidGenerally alcohol based liquid
which rises or falls as it expands or contracts which rises or falls as it expands or contracts with changes in temperature with changes in temperature
Colored Colored Have roll guardHave roll guard ScalesScales
May be twoMay be two Use CelsiusUse Celsius
TongsTongs
Crucible tongsCrucible tongs Beaker tongsBeaker tongs Used to grab hot or Used to grab hot or
untouchable glasswareuntouchable glassware
Volumetric FlaskVolumetric Flask
Come in all sizesCome in all sizes Narrow neckNarrow neck Single mark or calibrationSingle mark or calibration TC = “To contain”TC = “To contain” Used to contain or measure a very Used to contain or measure a very
precise and accurate amount of a precise and accurate amount of a liquid liquid
Very expensiveVery expensive
Wash BottlesWash Bottles
Plastic bottle with spoutPlastic bottle with spout Different shapes or stylesDifferent shapes or styles Contain only Contain only distilled distilled
water water unless indicatedunless indicated Used to dispense distilled Used to dispense distilled
water water To add small amounts to a To add small amounts to a
containercontainer To rinse specific glasswareTo rinse specific glassware
Watch GlassWatch Glass
A circular, slightly A circular, slightly concave piece of glass concave piece of glass
Used as a surface to Used as a surface to evaporate a liquidevaporate a liquid
Used as a cover for a Used as a cover for a beakerbeaker To prevent dust or other To prevent dust or other
particles from entering particles from entering the beaker the beaker
Weighing BoatsWeighing Boats
Disposable plastic Disposable plastic dishesdishes
Used to hold Used to hold substancessubstances
Placed on balances Placed on balances when weighingwhen weighing
Wire Gauze/Pipe Stem TriangleWire Gauze/Pipe Stem Triangle
Used with an iron ring and a ring stand Used to support laboratory equipment while heating
wire gauze supports beakers and flasks pipe stem triangle supports crucibles
Spot PlateSpot Plate
Made of ceramic or plastic
Used to perform reactions on very small amounts of materials