In this lesson, you will learn what density is and that is calculated by dividing the mass of a substance by its volume. It is a comparison of the size of an object to its mass. Density is used in chemistry and physics in many calculations and for many purposes. For example, the density of a substance is used when calculating molar concentration of solutions in chemistry. We will learn to calculate density and solve density problems. More Lessons: http://www.MathAndScience.com Twitter: https://twitter.com/JasonGibsonMath