
MEASUREMENT
Objectives
On completion
of the unit you should be able to:
 define the following terms:
 mass, volume, temperature, significant figures, density and specific
gravity.
 identify the number of significant figures in a measurement.
 round off the results of calculations to the correct number of significant
figures.
 express measurements in scientific notation with the correct number of significant
figures.
 identify the SI units commonly used to measure mass, volume, length and
temperature.
 define the commonly used metric prefixes.
 perform conversions using conversion factors.
 given any of the following (mass, volume and density), calculate the unknown.
 given any two of the following (mass, volume and specific gravity), calculate
the unknown.
