is the movement of water molecules across a partially permeable membrane from a region of higher water concentration to a region of lower water concentration
a partially permeablemembrane is just one with very small holes in it
only tiny molecules can pass through a partially permeable membrane
bigger molecules cant pass through a partially permeable membrane
water molecules can actually pass both ways through the membrane during osmosis
this happens becuase water molecules move about randomly all the time
because there are more water molecules on one side than the other theres a steady net flow of water into the region with fewer water molecules
this means the strong sugar solution gets more dilute
the water acts like its trying to even up the concentration either side of the membrane