12.2 Density

Quartz-Gold Problem

Given a piece of pure quartz with traces of gold, how can the amount of gold be determined? Duration: 6:10

Ways To Think About Density

Density is a measure of how compact a material is. The greater the density, the more mass is squeezed into a particular volume. Mathematically, density is expressed as the ratio of mass to volume. Duration: 8:06.