Use table 5 to determine what material the mass set is made of?

Use table 5 to determine what material the mass set is made of? Be sure to take your uncertainty into consideration

Material --> density at 20 degrees C

Aluminum --> 2.70 g/cm^3

copper --> 8.92 g/cm^3

lead --> 11.34g/cm^3

nickel --> 8.90 g/cm^3

silver --> 10.50 g/cm^3

steel --> 7.80 g/cm^3

zinc --> 7.4 g/cm^3

The mass set is made of _____ .