Thursday, September 5, 2013

Class 4 Blog

Diffusion and Osmosis

Diffusion: Molecules travel from high concentration to low concentration.

Osmosis: Put the solution in a semi-permeable “cell” and dump the cell into water. If there are more water molecules in the cell, water molecules go from the cell to the water until equilibrium is reached. Vice versa.

Hypertonic: A solution that contains more solvent than solute.

Hypotonic: A solution that contains more solute than solvent.

Isotonic: A solution in which the solute and solvent are equally distributed.

Water potential: affected mainly by two factors—pressure and the amount of solute. Water always travels from high potential to low potential.


In Part 2 and Part 4 of the experiment, we proved the ranking of the molarity of the solutions through their percentage of mass change. And there is sugar in different kinds of athletic drinks.

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