Determine the density of three pure solids on g/cm3. 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 report 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.

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.