Question

what is mean by density of a substance​

Answer 1

Answer:

Density, defined as a substance's mass per unit volume, is an important physical property for characterizing a material or chemical system. Mathematically, density is calculated as a substance's mass per the volume it occupies. ... To obtain the density of a substance, its mass and volume are determined by measurement.

Answer 2

Answer:

Density is a measure of mass per unit volume. The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have less volume than an object of equal mass made from some less dense substance (such as water).