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 _____ .