Density

I experimented with different liquids and used basic density equations to calculate their densities (mass/volume) and predict which liquids would float on top of each other. I then proceeded to actually take these liquids and suspend them on top of each other to test if my predictions were correct.

The project was very fun. I performed it in the 5^th grade and since them have found that in basic chemistry once will encounter the concept of density and over and over again. I think this is a project every student should have a chance to do because it was not only fun but it also taught me a lot about science.

Barry's Response - A good idea, appropriate for the grade level.

The principle of gravity separation, which this experiment simulates, provides the basis for many industrial processes. Production enterprises find the use of gravity practical in a variety of situations.

It works for liquids, as you describe, as well as dry mixtures of particle sizes. The method tends to be relatively inexpensive as compared to other methods, has minimal environmental impact and is quite versatile. It incorporates new technologies and enhancement methods such as thickening and clotting, flocculation (accelerated separation), or the introduction of other mobile fluids such air or steam, for example petroleum industry SAGD, steam-assisted gravity drainage.

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