Question #dc741

1 Answer
Aug 24, 2017

Answer:

Density is mass per volume, #"mass"/"volume"# . The volume filled by a mass changes with the temperature.

Explanation:

Gases, liquids and even solids expand and contract with temperature changes due to the change in kinetic energy of their atoms. Even in the same phase, a change in temperature will change the volume of a given mass.

Therefore, to have an accurate reference to density it must include the temperature of the mass at the time the volume was measured.