Question

What is meant by density of a substance? Arrenge the following in the decreasing order of density. Air,Milk,Copper.

Answer 1

The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: {\displaystyle \rho ={\frac {m}{V}}} where ρ is the density, m is the mass, and V is the volume.

air>milk>copper