H E L P (only answer if you can actually help.) 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.