The table provided gives the densities of four transparent materials A student has a clear block of an unknown substance and needs to determine the identity of the substance. The mass of the block is 23.9 grams. The block displaces 8.8 mL of water when dropped in a graduated cylinder. What is the
identity of the substance?
Substance
Density
Polyethylene
0.85 g/ml
Lucite
1.2 g/mL
Glass
2.3 g/mL
Quartz
2.7 g/ml
Polyethylene
Lucite
Glass
Quartz

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.