Metals Density Problem
Identify metals from their density.

You are working in a jewelry laboratory. Your job is to explore the properties of some alloys of silver, rhodium and platinum in order to make brighter jewels with less cost. However while preparing the alloys, you've lost the labels and now you have three unlabeled bottles of metallic powder. Design and perform experiments to identify the metals in these bottles. From a chemical handbook available in your lab, you find that the densities of silver, rhodium and platinum are 10.5, 12.4 and 21.45 grams per cubic centimeter, respectively. (Note, the solution viewers and precise transfer mode have been disabled for this activity, you may find a graduated cylinder useful in performing this experiment.)