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

1.8 - Density

1.8.1 - Density and Temperature 

Density is temperature dependent (i.e. - it varies with temperature).

eg - Mercury

Temperature Density Notation
at 20oC 13.55 g/mL = 13.55 g/mL
at 270oC 12.95 g/mL = 12.95 g/mL

Compare the densities of some common materials:

Material Density at room temperature
Solid:  
Aluminum 2.70 g/cm3
Lead 11.4 g/cm3

Liquid:  
Gasoline 0.67 g/mL
Mercury 13.55 g/mL
Water 1 g/mL

Gas:  
Air 1.3 g/L
Chlorine 3.17 g/L

When mercury, gasoline and water are mixed at room temperature, we would observe three layers because these liquids are immiscible. Look at the densities of these liquids given above, can you predict the order of these layers?

Section 2.8
Dimensional Analysis Method of Problem Solving for Conversions ..p33

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