active transport
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The spread of a drop of food dye throughout a glass of milk is called
You would see the drop slowly spread out until eventually the entire glass of water would be colored.
When you put a drop of food coloring into a glass of water, the water will turn that color.
A good question might be, "How long does it take a drop of food dye to color a glass of still water?"
convection currents
Diffusion only occurs down a concentration gradient. Put a drop of food coloring in a glass of water - you will never see the food coloring spontaneously concentrate. It will always spread down the gradient.
Of course! Drop a drop of iodine or food coloringin a glass of still water and watch it diffuse.
The food colouring will gradually spread through the water because of diffusion.
Diffusion is the movement of particles from a region of high concentration to a region of low concentration. An example would be putting a drop of food coloring in a glass of water. At first it will look dark and concentrated, after a while it will be spread out evenly.
It depends on temperature. The warmer the liquid the faster diffusion occurs.
Drop a drop of food dye in a glass of water and watch. The dye diffuses through out the water, weakening the dye and coloring the water.
The solvent is the larger amount in this case (water).