Lab Equipment and Measurements
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Transcript of Lab Equipment and Measurements
Lab Equipment and Lab Equipment and MeasurementsMeasurements
Graduated CylinderGraduated Cylinder Measures volume of liquidsMeasures volume of liquids Unit: liter (L)Unit: liter (L) Commonly use mL in labCommonly use mL in lab Proper Procedure: Place Proper Procedure: Place
cylinder on a flat surface, cylinder on a flat surface, get at eye level with the get at eye level with the liquid, and read the bottom liquid, and read the bottom of the of the miniscusminiscus, the curved , the curved part of the top of the liquid.part of the top of the liquid.
Correct Technique!Correct Technique!
MeniscusMeniscus
PracticePractice
BeakerBeaker Can be used to Can be used to
measure large measure large volumesvolumes, but not as , but not as accurate as a accurate as a graduated cylindergraduated cylinder
Mainly used for Mainly used for pouring and mixingpouring and mixing
Unit: Unit: mLmL
Triple-Beam BalanceTriple-Beam Balance Measures mass (amount of Measures mass (amount of
substance – how much)substance – how much) Unit: gram (g)Unit: gram (g) Procedure: Place balance on Procedure: Place balance on
a flat surface, adjust masses a flat surface, adjust masses until the arm balances. Take until the arm balances. Take the sum of the 3 masses.the sum of the 3 masses.
Practice!Practice!
More Practice!
Spring ScaleSpring Scale Measures weight Measures weight
(the force of the pull (the force of the pull of gravity on a of gravity on a substance)substance)
Unit: Newton (N)Unit: Newton (N)
Look more familiar?Look more familiar?
Meterstick or RulerMeterstick or Ruler Measures distance or Measures distance or
lengthlength Unit: meter (m), or cm Unit: meter (m), or cm
(centimeter) (centimeter) in the lab in the lab
Practice!
ThermometerThermometer
Measures temperatureMeasures temperature Unit: Kelvin (K) or Unit: Kelvin (K) or °Celcius (°C)°Celcius (°C) What do you think What do you think
would be the “proper would be the “proper procedure” for reading procedure” for reading a thermometer?a thermometer?
Stopwatch or TimerStopwatch or Timer Measures: Measures:
timetime
Unit: Unit: seconds seconds (s)(s)
Other EquipmentOther Equipment Test tubeTest tube FunnelFunnel Bunsen burnerBunsen burner Test tube clampTest tube clamp
Other Equipment (cont.)Other Equipment (cont.) Ring standRing stand Erlenmeyer Erlenmeyer
flaskflask
Dissection Equipment Forceps Teasing
needle Probe and
seeker Scalpel
IMPORTANT Prefixes Foldable IMPORTANT Prefixes Foldable KKathy athy HHas as DDirty irty UUnderwear, nderwear,
DDon’t on’t CCheck heck MMine!ine! kkilo = 1000ilo = 1000 hhecto = 100ecto = 100 ddeca = 10eca = 10 Basic Basic uunitnit ddeci = 1/10 = 0.1eci = 1/10 = 0.1 ccenti = 1/100 = 0.01enti = 1/100 = 0.01 mmilli = 1/1000 = 0.001illi = 1/1000 = 0.001