Determination of Density for an Unknown Substance
Density is a physical characteristic of a substance. As an intensive property, density of a
substance is the same no matter the quanitity of the substance. It is the relationship of mass to
volume. Usually denisty is reported in grams per milliliter; however, gases may be given in
grams per liter or even per kiloliter!
To plan and carry out an experiment selecting appropriate materials
To practice use of significant figures and metric units through the measurement and
calculation of density
To evaluate an experimental value by determining percent error
yard sticks thermometers balances
metric rulers beakers of various sizes flasks of various sizes
washer weights string and scissors glass stir rods
fume hood mortar and pestle water
weigh dishes graduated cylinders of various sizes
You will perform an experiment to determine the density of an unknown substance (any
regular/irregular solid or liquid). Develop a step by step procedure (using any of the materials
listed) and establish data and observation tables.
Data & Observations
Arrive in class with this prelab document to show your instructor. You will add additional sections
to this after your lab session. The combined document (prelab plus addtional aspects requested
after the lab) will be sumitted as the final lab report form.