The density<span> of a material is defined as its mass per </span>unit<span> volume. In this example, each volume of water is different and therefore has a specific and unique mass. The mass of water is expressed in grams (g) or kilograms (kg), and the volume is measured in liters (L), cubic centimeters (cm </span>3<span>), or milliliters (mL). hope that helped</span>
