Saturday, November 13, 2010

Diffusion in liquids

Experiment from Ania&Jessika

Materials needed:
- 2 glasses
- hot and cold water
- ink
Description of how to do:
Fill glasses halfway with water. One of them fill cold water, and the other with hot. Instill few drpos of ink on the surface of water (after it has stabilized). We can now observe the phenomenon of diffusion in liquids of different temperatures.
Diffusion is a spontaneous spread of one substances in another one. The rate of the diffusion depends on the temperaure of the liquid. Diffusion occurs more rapidly in liquids at the higer temperatures. This experience confirms the molecular strucure of liquid and the disordered motion of molecules.

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