REPORT: DENSITY Determine the density of three pure solids on g/cm3 (refer to the lesson in this unit titled using Chemical and Physical
Properties to identify Substances for the formula for density as well as a chart for densities of common materials and
substances). Choose objects of which you are sure of their identity, such as aluminum foil (crumpled or in a ball), copper
wire or iron nails. Then, test an object that you think might contain one of the materials you tested.
Report as to whether your data supports your hypothesis. Write a 200 word Geport including hypothesis, procedure, results,
and conclusions. Discuss the question, "What factors cause differences in density?" Be specific.
Example: If you choose aluminum foil and test its density by doing a water displacement test. You could then choose a
soda can or a can that contained some fruit, vegetable, or soup and test the can.
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Example: If you choose to test copper wire, you could use a penny for your second test to see if the penny is pure copper.
Here are your goals for this lesson:
Differentiate between materials based on their densities
• Plan and implement an investigative procedure to verify the identity of a substance based on its
density
• Communicate results of the experiment and include a discussion of factors of a material that affect
its density