Unit #1Unit #2Unit #3Unit #4Unit #5Unit #6Unit #7Unit #8Unit #9Unit #10
spacerUNIT # 1  
spacerspacerIntroduction
spacerspacerObjectives
spacerspacerReading

spacer1.1
Metric
spacerSystem
spacerSI System
spacerBritish System

spacer1.2 Temperature
spacerMeasure-
spacerments

spacer1.3 Scientific
spacerNotation

spacer1.4 Dimensional
spacerAnalysis

spacer1.5 Precision,
spacerAccuracy,
spacerUncertainty

spacerLimitation of the Measuring Instrument
spacerAnalysis of the Limitation of a Ruler
spacerAnalysis of the Limitation of another Ruler
spacer1.6 Significant
spacerFigures

spacerThe Magnitude and Reliability of the Measurement
spacerFive Rules for Determining the number of Significant Figures in a Measurement

spacer1.7 Calculations
spacerInvolving
spacerSignificant
spacerFigures
spacerRules for Rounding off Numbers
spacerRules for Addition  and Subtraction

spacerRules for Multiplication and Division

spacer1.8 Density
spacerDensity and Temperature
spacer1.9 Specific
spacerGravity
spacerspacerProblems
spacer1 | 2 | 3
   

MEASUREMENT

1.2 - Temperature Measurements

There are three common temperature scale:

Do you know how to convert between a temperature measured in Celsius to a temperature in Fahrenheit and vice-versa?



The Kelvin Scale (K)

Of the three scales, the Kelvin scale is used in the SI system. This scale is based on the lowest theoretical temperature known as absolute zero. Lord William Kelvin proposed this scale such that a degree in the Celsius scale is the same size as a degree in the Kelvin scale. The conversion to the Kelvin scale from the Celsius scale is


Approximate temperatures:

  • room temperature is approximately 298K (approximately 25oC)
  • when helium gas becomes a liquid, it is approximately 4K (approximately -277oC)
  • when nitrogen gas becomes a liquid, it is approximately 77K (approximately -196oC)



Section 2.3
Temperature ..p18

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British Columbia Institute of Technology
Chemistry Department - 3700 Willingdon Avenue
Burnaby, B.C. Canada V5G 3H2