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Because density is a property of a substance, regardless of the amount of that substance, it can be used to separate one material from another. This activity can be used to explore the relationship between atomic mass, volume, and density, and to relate these to the technique of centrifugation.
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(Submitted by Molit project teacher) Density is a topic commonly covered at the beginning of the semester in a first semester general chemistry course. This topic is usually taught as a numerical problem, e.g., density = mass/volume, how to calculate density, how to measure density, etc. The activity will be used as supplementary material to give students a molecular level understanding of density and to broaden their horizon beyond that of numerical problem solving. (Mitsuko Fujiwara - Parkland College)
Because density is a property of a substance, regardless of the amount of that substance, it can be used to separate one material from another.
Additional Related Concepts