## The Density Column Experiment

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The Density Column Experiment is an activity that introduces the concept of Density to students of science. Density if defined, is mass per unit volume. In other words, it is the relationship between the mass of a substance and the space it takes up. In many cases, if the volume taken up is the same, the denser substance would be heavier.

In this experiment, the students are asked to stack liquids on top of each other. This is done by looking up their density and putting in the heavier liquids into the container first before the lighter ones. The denser the liquid, the more it should sink.

Students stack liquid on top of each other by first placing the heaviest liquid in the bottom of the container and carefully dripping the lighter liquid on top of it.

The students work in a group to make sure that the liquid in the bottom is not disturbed by the action of dropping the lighter liquids on top of it.

The effect is as shown in this picture. The lighter liquids, if not disturbed are able to sit on top of the heavier ones without mixing together.