Density Practice Problems The density of a substance is a measure of how much mass is packed into a certain volume of the substance. Substances with a high density, like steel, have molecules that are packed together tightly. Substances with a low density, like cork, have fewer molecules packed into the same amount of space. The density of a substance can be found by dividing its mass by its volume. As long as a substance is homogeneous, the size or shape of the sample doesn’t matter. The density will always be the same. This means that a steel paper clip has the same density as a steel girder used to build a bridge. Density = Mass ÷ Volume D = Use the density formula to solve the following problems. Show all work and the answer must have the correct units. Remember that volume can have different forms. A block of ice with a volume of 3 cm 3 would be 3 mL of liquid after being melted.
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- Summer '08